Re: [BlindHandyMan] electric motor question
This is a quote from wikipedia Where units of horsepower are used for marketing consumer products, often measurement methods are designed by advertisers to maximize the size of the number produced for any product, even if this may not reflect realistic capacity of the product to do work when used in normal conditions. Now to say why one motor works great and even a larger one can't perform even close depends on a couple things. Older motors ran maybe up to 1600 rpm and were rated to start at full load or better conditions and had service factors greater than 1. Many of the newer ones run at speeds over 3600 and smaller ones at over 7200 rpm. Because of the speed difference, lets say a one hp motor runs at 1200 rpm and a 1/6 hp motor runs at 7200 rpm, both can do the same amount of work in the same time depending on how you look and compare. So the 1/6 hp motor can be as rated to do 1 hp work, but there is no power comparison. Routers are a good example as are saws. They run at speeds at 32,000 rpm up to 72,000 rpm and more. The motors are rated work-wise due to the speed at which they work and have nothing to do with load, not capable power to do work. Also most are now designed to have ratings not even associated with starting, forbid. Also with dc motors and speed controllers on ac motors that start on low power speeds, they can fudge power ratings as starting with heavy loads, when in fact the ratings do not include full speed or for any duration of time if the unit overheats and shuts off and stalls. Their answer is you must have done something wrong or it was just bad power circuit connection. When they say rated at, it can be quite a bit off from what it actually is in fact. bob [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
Hi Dale, Thanks for the information. I never did, and probably never will, understand this horsepower rating stuff. I once owned a table saw that was rated at 2 horsepower and it constantly bogged down trying to cut heavier pieces of wood. At some point, I inherited a saw with a 1.5 horsepower motor and it never stalled no matter what I put through it. Both were belt drives with 10 inch blades. I never could figure out why a 2 horsepower motor would bog down cutting a piece of wood that wouldn't make a 1.5 horsepower motor even break a sweat. Years ago, my company decided that all non-electrical engineers (software, mechanical, optical, etc) needed a basic understanding of electricity and electrical concepts. They put all of us through six weeks of training using an extensive collection of video recorded classes. Many things made a great deal of sense after the class but, after not using most of the information for years, most of what I learned has faded into oblivion. Maybe it's time to haul out my recordings of the classes again and take a refresher course. But, being electron and proton challenged, I'm sure I'll be writing the list with all manner of electrical related questions. And yeah, before some smart ass on the list points it out, I do know that there are such things as neutrons. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Dale Leavens Sent: Thursday, October 08, 2009 5:32 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question I don't know really how you would do that without very specialized equipment but it really doesn't matter much so long as it performs to your requirements. There quite probably is a measure which can be said to produce a horsepower of that rating at least briefly and the manufacturer could probably produce that proof or definition but for practical purposes a horse and a half is about all you can get out of a 110 volt 15 amp circuit. My Delta 18 inch drum sander and my compressor will both trip a 15 amp breaker. The sander is rated at 1.5 HP but I have to watch not to feed it too fast and allow it to bog down. I always knew that my compressor over rated it's horsepower but it too will trip it's own 15 amp breaker I believe on start-up. Not all of the time, I often forget to turn it off and it will cycle for a couple of days then apparently get fed-up and shut itself off for me. I suppose that ideally one would power a treadmill with foot power. I don't much like treadmills for that reason and really they should only need to produce enough power to move the belt along. Big powerful motors really only exercise the power company turbines. The article I read on Wikipedia on horsepower indicated that a human can produce the 550 foot pounds only very briefly. a 3 horsepower treadmill presumably can do 1650 foot pounds indefinitely. What for? - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Thursday, October 08, 2009 8:47 AM Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill
RE: [BlindHandyMan] electric motor question
Hi Michael, I'm sure your correct about so many of these ratings being marketing ploys for people who know little about a given subject. I've always been a firm believer of the bigger is better concept (the Tim Taylor syndrome). I've gotten better over the years, though. Limited money and too many things out there I'd like to own have influenced me a great deal over the last several years. The only reason we bought the better, higher powered, treadmill is because it was on clearance and actually cost $200 less than the model below it. It has a few nicer features than the lower model but I'm sure we would have done without them before we would have paid the extra $200 for them. This list is great for filling in one's knowledge gaps and I'm sure I'll be back with many more basic level electrical questions. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Michael baldwin Sent: Thursday, October 08, 2009 11:24 AM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question I would almost guess that the peak hp of that motor is 3.5, but the continuous hp is around 1.5- 2.0. Which basically means, that if all the right conditions existed, that motor could put out 3.5 hp. Which, connected to a 20 amp 120 volt outlet won't happen. Convert it to 240 volt, and then it won't be a problem. It is a marketing ploy that a lot of treadmill manufactures use, they give you the peak hp of the motor. i have seen some treadmill motors now use PWM (pulse Width modulation), which means nothing to me, so I don't know how this effects HP of an electric motor. Or some electric motors actually run on D/C, and not A/C, again, I have no clue how that will effect HP of the motor, I know it makes the motor more energy efficient. To make things even more confusing, some treadmill manufactures rate their motor HP at the final drive, after all gear ratios and such. It is hard to compare them apples to apples. Michael _ From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Edward Przybylek Sent: Thursday, October 08, 2009 7:48 AM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com [mailto:blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject
Re: [BlindHandyMan] electric motor question
Well, in the end that is the important thing. The things we accumulate should do what we want them to do reliably and conveniently for the price we are willing to pay. It is sometimes difficult for me to remember that the only purpose a manufacturer has is to move as much money from my pocket to theirs as they can as quickly and efficiently as they can. Your treadmill was not built and sold with your health in mind. That holds for every stage along the way from the shipper to the retailer. If a horsepower rating clinches a sale for some then that is what they will give. Like Dan's dilemma over an impact driver, the precise rating is less important than enough power to perform the work he needs or wants to perform. Twisting the heads off of bolts is not the goal. - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com Sent: Sunday, October 11, 2009 10:28 AM Subject: RE: [BlindHandyMan] electric motor question Hi Michael, I'm sure your correct about so many of these ratings being marketing ploys for people who know little about a given subject. I've always been a firm believer of the bigger is better concept (the Tim Taylor syndrome). I've gotten better over the years, though. Limited money and too many things out there I'd like to own have influenced me a great deal over the last several years. The only reason we bought the better, higher powered, treadmill is because it was on clearance and actually cost $200 less than the model below it. It has a few nicer features than the lower model but I'm sure we would have done without them before we would have paid the extra $200 for them. This list is great for filling in one's knowledge gaps and I'm sure I'll be back with many more basic level electrical questions. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Michael baldwin Sent: Thursday, October 08, 2009 11:24 AM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question I would almost guess that the peak hp of that motor is 3.5, but the continuous hp is around 1.5- 2.0. Which basically means, that if all the right conditions existed, that motor could put out 3.5 hp. Which, connected to a 20 amp 120 volt outlet won't happen. Convert it to 240 volt, and then it won't be a problem. It is a marketing ploy that a lot of treadmill manufactures use, they give you the peak hp of the motor. i have seen some treadmill motors now use PWM (pulse Width modulation), which means nothing to me, so I don't know how this effects HP of an electric motor. Or some electric motors actually run on D/C, and not A/C, again, I have no clue how that will effect HP of the motor, I know it makes the motor more energy efficient. To make things even more confusing, some treadmill manufactures rate their motor HP at the final drive, after all gear ratios and such. It is hard to compare them apples to apples. Michael _ From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Edward Przybylek Sent: Thursday, October 08, 2009 7:48 AM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com [mailto:blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit
Re: [BlindHandyMan] electric motor question
Well Ed, the reason you have trouble with horse power and all is because it is really apples and oranges. Basically if you keep track of the amps the motor says it draws,you'll see the more amps the more power. That's really as close as you can get to having something make sense.A 12 amp motor won't have the power of a 15 amp motor and so on. That is unless the gear ratio is different in the lower amp motor... See how silly this can get in a hurry? - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com Sent: Sunday, October 11, 2009 10:17 AM Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Thanks for the information. I never did, and probably never will, understand this horsepower rating stuff. I once owned a table saw that was rated at 2 horsepower and it constantly bogged down trying to cut heavier pieces of wood. At some point, I inherited a saw with a 1.5 horsepower motor and it never stalled no matter what I put through it. Both were belt drives with 10 inch blades. I never could figure out why a 2 horsepower motor would bog down cutting a piece of wood that wouldn't make a 1.5 horsepower motor even break a sweat. Years ago, my company decided that all non-electrical engineers (software, mechanical, optical, etc) needed a basic understanding of electricity and electrical concepts. They put all of us through six weeks of training using an extensive collection of video recorded classes. Many things made a great deal of sense after the class but, after not using most of the information for years, most of what I learned has faded into oblivion. Maybe it's time to haul out my recordings of the classes again and take a refresher course. But, being electron and proton challenged, I'm sure I'll be writing the list with all manner of electrical related questions. And yeah, before some smart ass on the list points it out, I do know that there are such things as neutrons. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Dale Leavens Sent: Thursday, October 08, 2009 5:32 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question I don't know really how you would do that without very specialized equipment but it really doesn't matter much so long as it performs to your requirements. There quite probably is a measure which can be said to produce a horsepower of that rating at least briefly and the manufacturer could probably produce that proof or definition but for practical purposes a horse and a half is about all you can get out of a 110 volt 15 amp circuit. My Delta 18 inch drum sander and my compressor will both trip a 15 amp breaker. The sander is rated at 1.5 HP but I have to watch not to feed it too fast and allow it to bog down. I always knew that my compressor over rated it's horsepower but it too will trip it's own 15 amp breaker I believe on start-up. Not all of the time, I often forget to turn it off and it will cycle for a couple of days then apparently get fed-up and shut itself off for me. I suppose that ideally one would power a treadmill with foot power. I don't much like treadmills for that reason and really they should only need to produce enough power to move the belt along. Big powerful motors really only exercise the power company turbines. The article I read on Wikipedia on horsepower indicated that a human can produce the 550 foot pounds only very briefly. a 3 horsepower treadmill presumably can do 1650 foot pounds indefinitely. What for? - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Thursday, October 08, 2009 8:47 AM Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite
Re: [BlindHandyMan] electric motor question
hey bob don't forget adding in pully sizes too. jim [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
Hi Tom, Thanks for the information. The occasional trip to the basement to reset a breaker isn't a problem if that's the only thing I need to worry about. As far as extension cords, I never use them unless absolutely necessary. For power tools and units as large as this treadmill, I've got some cords that are 12 gauge but I prefer not to use them. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 3:22 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Edward, 3.5 HP times 746 watts per HP over 120 volts is over 21 amps. so they're probably lying about the hp, but you could sure pop a breaker if they aren't. Absolutely no extension cords on this puppy. Tom On Wed, Oct 07, 2009 at 03:11:02PM -0400, Edward Przybylek wrote: Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
I would almost guess that the peak hp of that motor is 3.5, but the continuous hp is around 1.5- 2.0. Which basically means, that if all the right conditions existed, that motor could put out 3.5 hp. Which, connected to a 20 amp 120 volt outlet won't happen. Convert it to 240 volt, and then it won't be a problem. It is a marketing ploy that a lot of treadmill manufactures use, they give you the peak hp of the motor. i have seen some treadmill motors now use PWM (pulse Width modulation), which means nothing to me, so I don't know how this effects HP of an electric motor. Or some electric motors actually run on D/C, and not A/C, again, I have no clue how that will effect HP of the motor, I know it makes the motor more energy efficient. To make things even more confusing, some treadmill manufactures rate their motor HP at the final drive, after all gear ratios and such. It is hard to compare them apples to apples. Michael _ From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Edward Przybylek Sent: Thursday, October 08, 2009 7:48 AM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com [mailto:blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@ mailto:blindhandyman%40yahoogroups.com yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
I don't know really how you would do that without very specialized equipment but it really doesn't matter much so long as it performs to your requirements. There quite probably is a measure which can be said to produce a horsepower of that rating at least briefly and the manufacturer could probably produce that proof or definition but for practical purposes a horse and a half is about all you can get out of a 110 volt 15 amp circuit. My Delta 18 inch drum sander and my compressor will both trip a 15 amp breaker. The sander is rated at 1.5 HP but I have to watch not to feed it too fast and allow it to bog down. I always knew that my compressor over rated it's horsepower but it too will trip it's own 15 amp breaker I believe on start-up. Not all of the time, I often forget to turn it off and it will cycle for a couple of days then apparently get fed-up and shut itself off for me. I suppose that ideally one would power a treadmill with foot power. I don't much like treadmills for that reason and really they should only need to produce enough power to move the belt along. Big powerful motors really only exercise the power company turbines. The article I read on Wikipedia on horsepower indicated that a human can produce the 550 foot pounds only very briefly. a 3 horsepower treadmill presumably can do 1650 foot pounds indefinitely. What for? - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com Sent: Thursday, October 08, 2009 8:47 AM Subject: RE: [BlindHandyMan] electric motor question Hi Dale, Pretty much, what you said is what I thought but I figured it wouldn't hurt to ask. How would I verify the horsepower of the motor? Both the manual and the label on the side of the motor claim it's 3.5 HP. My knowledge of electricity and motors is almost 0. Any information is greatly appreciated. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Dale Leavens Sent: Wednesday, October 07, 2009 6:02 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com [mailto:blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com ] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom
Re: [BlindHandyMan] electric motor question
Fortunately for me it is on a little used circuit but if required the main panel box is just on the other side of the wall if I would have to run another line. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com - Original Message - From: Tom Fowle fo...@ski.org To: blindhandyman@yahoogroups.com Sent: Wednesday, October 07, 2009 1:43 PM Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom Send any questions regarding list management to: blindhandyman-ow...@yahoogroups.com To listen to the show archives go to link http://www.acbradio.org/pweb/index.php?module=pagemasterPAGE_user_op=view_pagePAGE_id=33MMN_position=47:29 Or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: blindhandyman-h...@yahoogroups.comyahoo! Groups Links
RE: [BlindHandyMan] electric motor question
Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Edward, 3.5 HP times 746 watts per HP over 120 volts is over 21 amps. so they're probably lying about the hp, but you could sure pop a breaker if they aren't. Absolutely no extension cords on this puppy. Tom On Wed, Oct 07, 2009 at 03:11:02PM -0400, Edward Przybylek wrote: Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Well, it isn't the end of the world to trip a breaker so I wouldn't worry about it too much. I can however pretty well guarantee that motor isn't anything near 3.5 hp. regardless what they rate it at or tell you. Why would it have to be anyway, one horsepower is 550 foot pounds per second. Unless you are running an elephant or you have quite spectacular foot pounds you won't be taxing a motor anything like that hard. - Original Message - From: Edward Przybylek To: blindhandyman@yahoogroups.com Sent: Wednesday, October 07, 2009 3:11 PM Subject: RE: [BlindHandyMan] electric motor question Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Just for the discusion. What style of male plug is on the machine? The standard Edison plug rated for 15 amps has the two prongs parallel with the ground down below. If it has a 20 amp rated male plug one of the straight blades will be at 90 degrees to the other. If 30 amp, still at 120 it will be different yet. So if the company puts on a 15 amp rated plug go with that and figure any horsepower rating is so much horse dung. Ron - Original Message - From: Tom Fowle To: blindhandyman@yahoogroups.com Sent: Wednesday, October 07, 2009 2:21 PM Subject: Re: [BlindHandyMan] electric motor question Edward, 3.5 HP times 746 watts per HP over 120 volts is over 21 amps. so they're probably lying about the hp, but you could sure pop a breaker if they aren't. Absolutely no extension cords on this puppy. Tom On Wed, Oct 07, 2009 at 03:11:02PM -0400, Edward Przybylek wrote: Hi all, I've been following this thread with much interest because we just purchased a new treadmill. The unit has a 3.5 horsepower motor, is capable of a 12% incline and has a top speed of 10 MPH. This discussion thread has concerned itself with motors 2.5 HP and lower and whether there needs to be a concern about breaker ratings. Given that this unit has a motor with 3.5 HP, are there concerns I should be addressing? We use the treadmill for power walking and I'm quite sure it will never see speeds much over 5 or 6 MPH. We've had the incline up to 8 percent and I'm sure we'll have it up to the 12% maximum before too long. We haven't popped a breaker yet but I just want to be sure that there isn't something I should be doing just as a precaution. Thanks. Take care, Ed Przybylek From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Tom Fowle Sent: Wednesday, October 07, 2009 1:43 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question David, One Horsepower is generally considered to require about 750 watts. so 2.25 HP will need a solid 1700 watts. This is probably a peak rating, but none th less it must be on a 20 amp circuit that isn't used much. If you have a coule 200 watt outside lights on at the same time, it will get very close to the max rating of a 20 amp circuit. tom [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
Full load for a treadmill would be the treadmill operating at the fastest speed available, with a person about 250 pounds, while also operating the incline function. As you can surmise, this would probably never happen, so there is plenty of safety factor included in the rated amp load or the unit. From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Ron Yearns Sent: Monday, October 05, 2009 9:53 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well I checked in the 96 issue of the NEC and if it is actually a DC motor which is easiest to do speed control a 2 hp motor is listed as pulling 17 amps, a single phase 2 hp is listed at 24 amps, and a squirrel cage, wound roter, which I doubt it is is rated at 13.8 amps. With sine wave chopping controllers for speed as most of the newer things are it is no telling what a tru RMS value may be. Of course the listed values I was giving was at full load. What would be full load for a treadmill. Somewhere there should be info in the literature or on a name plate giving a wattage or amperage for the entire unit, which in your case is what is important.. Two and one fourth horse power is a non standard horsepower, which I have saw similar on imported equipment. Probably because it is designed for 50 cycle the horsepower rating changes for our 60 cycle. Ron - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Monday, October 05, 2009 6:12 PM Subject: [BlindHandyMan] electric motor question We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
It can go up to 10 MPH which as you can well imagine is not ever going to be a problem for me at 50 years of age. So I agree it is doubtful that it will ever come all that close to full load on the electric circuit. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com - Original Message - From: Tom Hodges tomhod...@fuse.net To: blindhandyman@yahoogroups.com Sent: Tuesday, October 06, 2009 8:29 AM Subject: RE: [BlindHandyMan] electric motor question Full load for a treadmill would be the treadmill operating at the fastest speed available, with a person about 250 pounds, while also operating the incline function. As you can surmise, this would probably never happen, so there is plenty of safety factor included in the rated amp load or the unit. From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Ron Yearns Sent: Monday, October 05, 2009 9:53 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] electric motor question Well I checked in the 96 issue of the NEC and if it is actually a DC motor which is easiest to do speed control a 2 hp motor is listed as pulling 17 amps, a single phase 2 hp is listed at 24 amps, and a squirrel cage, wound roter, which I doubt it is is rated at 13.8 amps. With sine wave chopping controllers for speed as most of the newer things are it is no telling what a tru RMS value may be. Of course the listed values I was giving was at full load. What would be full load for a treadmill. Somewhere there should be info in the literature or on a name plate giving a wattage or amperage for the entire unit, which in your case is what is important.. Two and one fourth horse power is a non standard horsepower, which I have saw similar on imported equipment. Probably because it is designed for 50 cycle the horsepower rating changes for our 60 cycle. Ron - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com mailto:blindhandyman%40yahoogroups.com Sent: Monday, October 05, 2009 6:12 PM Subject: [BlindHandyMan] electric motor question We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] Send any questions regarding list management to: blindhandyman-ow...@yahoogroups.com To listen to the show archives go to link http://www.acbradio.org/pweb/index.php?module=pagemasterPAGE_user_op=view_pagePAGE_id=33MMN_position=47:29 Or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: blindhandyman-h...@yahoogroups.comyahoo! Groups Links
[BlindHandyMan] electric motor question
We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed]
[BlindHandyMan] electric motor question
Dear David: If my memory serves, and it is getting stubborn about that, one horse power equals 760 watts which would result in roughly 7 amps per horse power when running. Most motors require at least a third more power when starting, and if it is starting under load, that can go up a bit. A twenty amp circuit should be sufficient to power the motor. I do believe there are several appliances on the market that claim two plus horse power, however I doubt that some of them are as powerful as claimed. The rated amps should be on the motor unless it was manufactured back in the good old days when it was not a criminal offense to remove a tag from a pillow. Yours Truly, Clifford Wilson Ps. I was assuming that you were talking about a motor running on 110 volts. [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Clifford, Close! An electric motor is rated at 746 Watts per horse power. There is a very complete Wikipedia article on the subject which I found interesting. Usually most home circuits are 15 amps and for practical purposes one cannot really generate more than about a horse and a half. As you say though, these things aren't reliably rated, they use optimistic calculations. My compressor claims to be 5 HP. I have it on it's own 15 amp breaker and it does sometimes kick it out on start-up but it isn't anything like 5 HP. That takes 220 V at 15 amps at least. 20 amps should happily run a treadmill and probably 15 amps but if there is a substantial other load you might trip the breaker starting off on a steep incline. - Original Message - From: clifford To: blindhandyman@yahoogroups.com Sent: Monday, October 05, 2009 9:04 PM Subject: [BlindHandyMan] electric motor question Dear David: If my memory serves, and it is getting stubborn about that, one horse power equals 760 watts which would result in roughly 7 amps per horse power when running. Most motors require at least a third more power when starting, and if it is starting under load, that can go up a bit. A twenty amp circuit should be sufficient to power the motor. I do believe there are several appliances on the market that claim two plus horse power, however I doubt that some of them are as powerful as claimed. The rated amps should be on the motor unless it was manufactured back in the good old days when it was not a criminal offense to remove a tag from a pillow. Yours Truly, Clifford Wilson Ps. I was assuming that you were talking about a motor running on 110 volts. [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
1 horsepower equils 746 watts so a 2.25 horse motor equils 1678.5 watts. Dividing 1678.5 watts by 120 volts and you get 13.9875 amps. - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com Sent: Monday, October 05, 2009 7:12 PM Subject: [BlindHandyMan] electric motor question We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Well I checked in the 96 issue of the NEC and if it is actually a DC motor which is easiest to do speed control a 2 hp motor is listed as pulling 17 amps, a single phase 2 hp is listed at 24 amps, and a squirrel cage, wound roter, which I doubt it is is rated at 13.8 amps. With sine wave chopping controllers for speed as most of the newer things are it is no telling what a tru RMS value may be. Of course the listed values I was giving was at full load. What would be full load for a treadmill. Somewhere there should be info in the literature or on a name plate giving a wattage or amperage for the entire unit, which in your case is what is important.. Two and one fourth horse power is a non standard horsepower, which I have saw similar on imported equipment. Probably because it is designed for 50 cycle the horsepower rating changes for our 60 cycle. Ron - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com Sent: Monday, October 05, 2009 6:12 PM Subject: [BlindHandyMan] electric motor question We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
I would also imagine that must depend on how fast it is going at any given time. This is good information to have, thanks to all. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com - Original Message - From: NLG nge...@pennswoods.net To: blindhandyman@yahoogroups.com Sent: Monday, October 05, 2009 9:36 PM Subject: Re: [BlindHandyMan] electric motor question 1 horsepower equils 746 watts so a 2.25 horse motor equils 1678.5 watts. Dividing 1678.5 watts by 120 volts and you get 13.9875 amps. - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com Sent: Monday, October 05, 2009 7:12 PM Subject: [BlindHandyMan] electric motor question We just got a new treadmill that has a 2.25 horse power motor in it. I don't recall the formula for calculating the electrical current usage but I know that there are several on here who do know it off the top. It is on a fairly lightly used circuit but that of course depends on the time of day as outside lights ETC are also on that line. I can change things around here and need to know if I should or not. David Ferrin www.jaws-users.com VIP Conduit Tech Support www.vipconduit.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] Send any questions regarding list management to: blindhandyman-ow...@yahoogroups.com To listen to the show archives go to link http://www.acbradio.org/pweb/index.php?module=pagemasterPAGE_user_op=view_pagePAGE_id=33MMN_position=47:29 Or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: blindhandyman-h...@yahoogroups.comyahoo! Groups Links
Re: [BlindHandyMan] electric motor question
David, seven hundred fifty watts per horsepower, thus the typical fifteen amp circuit might just make two horses, theoretically but with start up surge currents probably not. Tom
Re: [BlindHandyMan] electric motor question
And who ever heard of horses running a table saw. Darn Sears anyhow... - Original Message - From: cheetah To: blindhandyman@yahoogroups.com Sent: Tuesday, February 12, 2008 5:23 PM Subject: Re: [BlindHandyMan] electric motor question thats like the games sears plays with there table saws. i have a contractors table saw with a one and a half horse motor. but good ole sears clames it develops 3 horse power. hmmm jim At 05:54 AM 2/12/2008, you wrote: Dan, That's why I said looking at amps and Hp is apples and oranges. When I bought the router I saw how many amps the motor pulled and made a decision based on that. Well that and they were selling them for $119 on a special I found... I remember the theory somewhat but never gave it much attention because in machines it's based more on gearing and mechanical advantage. But I'd bet a lot of sales come from the HP rating for the bigger is better crowd. I wish emails had a way of being read where Jaws could pick up a laugh or grin in an email... I forget that a lot of times and I send something back as a laugh and it isn't taken that way... - Original Message - From: Dan Rossi To: mailto:blindhandyman%40yahoogroups.comblindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 10:23 PM Subject: Re: [BlindHandyMan] electric motor question Bob, Just pointing out the wide variation between what theory says is possible, and what people are claiming is reality. The 3.25 HP your router claims means that it would draw 20.2 Amps at 120 Volts if the motor was perfect. So, no I don't really believe that your router can continuously generate 3.25 HP. I do believe it can generate that kind of power very briefly though. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: mailto:dr25%40andrew.cmu.edu[EMAIL PROTECTED] Tel: (412) 268-9081 [Non-text portions of this message have been removed] No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.4/1275 - Release Date: 2/12/2008 3:20 PM [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
thats like the games sears plays with there table saws. i have a contractors table saw with a one and a half horse motor. but good ole sears clames it develops 3 horse power. hmmm jim At 05:54 AM 2/12/2008, you wrote: Dan, That's why I said looking at amps and Hp is apples and oranges. When I bought the router I saw how many amps the motor pulled and made a decision based on that. Well that and they were selling them for $119 on a special I found... I remember the theory somewhat but never gave it much attention because in machines it's based more on gearing and mechanical advantage. But I'd bet a lot of sales come from the HP rating for the bigger is better crowd. I wish emails had a way of being read where Jaws could pick up a laugh or grin in an email... I forget that a lot of times and I send something back as a laugh and it isn't taken that way... - Original Message - From: Dan Rossi To: mailto:blindhandyman%40yahoogroups.comblindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 10:23 PM Subject: Re: [BlindHandyMan] electric motor question Bob, Just pointing out the wide variation between what theory says is possible, and what people are claiming is reality. The 3.25 HP your router claims means that it would draw 20.2 Amps at 120 Volts if the motor was perfect. So, no I don't really believe that your router can continuously generate 3.25 HP. I do believe it can generate that kind of power very briefly though. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: mailto:dr25%40andrew.cmu.edu[EMAIL PROTECTED] Tel: (412) 268-9081 [Non-text portions of this message have been removed] No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.4/1275 - Release Date: 2/12/2008 3:20 PM
Re: [BlindHandyMan] electric motor question
Ahh another can of worms perhaps. Most routers are technically universal motors with brushes that can run on ac or dc in theory. the Code chart i looked at was for single phase a c motors. No not an answer to your query, but juist to say we are talking apples and oranges again. Ron - Original Message - From: Bob Kennedy To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 8:55 PM Subject: Re: [BlindHandyMan] electric motor question So I guess that means my 3.25 HP router from Freud isn't really 3.25 HP... - Original Message - From: Dan Rossi To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 9:50 PM Subject: Re: [BlindHandyMan] electric motor question So, not surprisingly, theory and reality are at odds. The 20 amp times 120 volt divided by 746 watts per HP, gives the theoretical value. Luckily, we have folks on the list who know a lot more practical knowledge than someone like me with a bunch of theory. Reality appears to be that you are going to max out a 20 amp circuit with not much more than one HP. Now, where did I leave my infinitely large, infinitely thin conducting plate? I'm always putting the damn thing on edge and then can never find it again. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/blindhandyman/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/blindhandyman/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[BlindHandyMan] electric motor question
I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
um? 4hp at 110 volts? impossible! - Original Message - From: Larry Stansifer To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:38 PM Subject: RE: [BlindHandyMan] electric motor question It seems like Sears advertises a 4HP 110V AC air compressor. -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David W Wood Sent: Monday, February 11, 2008 1:51 PM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- BEGIN-ANTISPAM-VOTING-LINKS -- Teach InfoWest Spam Trap if this mail (ID 156530114) is spam: Spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=s Not spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=n Forget vote: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=f -- END-ANTISPAM-VOTING-LINKS [Non-text portions of this message have been removed]
RE: [BlindHandyMan] electric motor question
It seems like Sears advertises a 4HP 110V AC air compressor. -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David W Wood Sent: Monday, February 11, 2008 1:51 PM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- BEGIN-ANTISPAM-VOTING-LINKS -- Teach InfoWest Spam Trap if this mail (ID 156530114) is spam: Spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=s Not spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=n Forget vote: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=f -- END-ANTISPAM-VOTING-LINKS
Re: [BlindHandyMan] electric motor question
If you have a standard 15 amp circuit at 120 Volts, that is 1800 Watts. There are 746 Watts per Horsey. So about 2.4 HP from a 15 Amp circuit. Bump that up to a 20 Amp circuit, 2400 Watts and you get up to almost 3.5 HP. Max and Tom, did I get those units right? -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel:(412) 268-9081
Re: [BlindHandyMan] electric motor question
I knew either you or Max would come back with a quick answer for me, thanks. David Ferrin www.jaws-users.com - Original Message - From: Dan Rossi [EMAIL PROTECTED] To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:27 PM Subject: Re: [BlindHandyMan] electric motor question If you have a standard 15 amp circuit at 120 Volts, that is 1800 Watts. There are 746 Watts per Horsey. So about 2.4 HP from a 15 Amp circuit. Bump that up to a 20 Amp circuit, 2400 Watts and you get up to almost 3.5 HP. Max and Tom, did I get those units right? -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links
Re: [BlindHandyMan] electric motor question
Bob, Just pointing out the wide variation between what theory says is possible, and what people are claiming is reality. The 3.25 HP your router claims means that it would draw 20.2 Amps at 120 Volts if the motor was perfect. So, no I don't really believe that your router can continuously generate 3.25 HP. I do believe it can generate that kind of power very briefly though. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel:(412) 268-9081
Re: [BlindHandyMan] electric motor question
So, not surprisingly, theory and reality are at odds. The 20 amp times 120 volt divided by 746 watts per HP, gives the theoretical value. Luckily, we have folks on the list who know a lot more practical knowledge than someone like me with a bunch of theory. Reality appears to be that you are going to max out a 20 amp circuit with not much more than one HP. Now, where did I leave my infinitely large, infinitely thin conducting plate? I'm always putting the damn thing on edge and then can never find it again. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel:(412) 268-9081
Re: [BlindHandyMan] electric motor question
You sure did Dan. Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] - Original Message - From: Dan Rossi [EMAIL PROTECTED] To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 3:27 PM Subject: Re: [BlindHandyMan] electric motor question If you have a standard 15 amp circuit at 120 Volts, that is 1800 Watts. There are 746 Watts per Horsey. So about 2.4 HP from a 15 Amp circuit. Bump that up to a 20 Amp circuit, 2400 Watts and you get up to almost 3.5 HP. Max and Tom, did I get those units right? -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1272 - Release Date: 2/11/2008 5:28 PM
Re: [BlindHandyMan] electric motor question
Well I checked back on my posting when were sizing a transfer switch and found I had created a big typo the chart for full load amperage for single phase motors is 430-148 not 440-148 as I had typed. So finding it was not easy. Anyway a one horse motor is listed at 16 amps and a one and one half is rated at 20 amps when ran at 115 volts.Understand these tables are generac and individual motors may vary and that was printed in 1996. Anyway a 20 amp circuit should be loaded to no more than 80 percent of its capacity so 16 amps would point you to a one horse as the maximum for continous duty and the larger might run, but may trip a breaker on starting and be very marginal when running. Ron - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 2:48 PM Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
A standard regular motor at 1 HP takes around 16 amps and if split capacitor start and run might drop the running amperage to 12 anps, on 120 volts. Starting amperage will be maybe 35 amps. A three Hp motor on 120 volts will draw around 100 amps to start and will need a heck of a wire to it and it won't be a 120 volt recepticle. It will need one heck of a starter. There are claims of work related power as compared to HP rating. What they claim can be correct depending on how you look at it. What is done is a comparison of a sandard motor running at 1500 or 1800 rpm, lets pick a 1 HP motor. Now we will compare it to a one third Hp motor running at 4500 to 5600 rpm. Work wise they can be equal as long as the load on the one third HP motor is equal to one third HP motor. It will not take the load of the 1 HP motor. So work wise they can be equal, but aren't even close to the amount of power required or used. It does however sound good. The amps I have guessed at from memory but they should be close for single phase. .bob [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
dan, according to my math, P equals E I your math was right on the money. Bill To find out about our lists please go to http://www.geocities.com/wsvh7072/lists.html If you wish a copy of lists please Email us at [EMAIL PROTECTED] or at [EMAIL PROTECTED] - Original Message - From: Dan Rossi [EMAIL PROTECTED] To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 3:27 PM Subject: Re: [BlindHandyMan] electric motor question If you have a standard 15 amp circuit at 120 Volts, that is 1800 Watts. There are 746 Watts per Horsey. So about 2.4 HP from a 15 Amp circuit. Bump that up to a 20 Amp circuit, 2400 Watts and you get up to almost 3.5 HP. Max and Tom, did I get those units right? -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links
Re: [BlindHandyMan] electric motor question
That apples and oranges. The more amps it can run with the stronger it will be. But claims of 3 HP come anywhere from 12 to 15 amps. There really isn't a good conversion for amps to HP though. - Original Message - From: David Ferrin To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 3:48 PM Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
So I guess that means my 3.25 HP router from Freud isn't really 3.25 HP... - Original Message - From: Dan Rossi To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 9:50 PM Subject: Re: [BlindHandyMan] electric motor question So, not surprisingly, theory and reality are at odds. The 20 amp times 120 volt divided by 746 watts per HP, gives the theoretical value. Luckily, we have folks on the list who know a lot more practical knowledge than someone like me with a bunch of theory. Reality appears to be that you are going to max out a 20 amp circuit with not much more than one HP. Now, where did I leave my infinitely large, infinitely thin conducting plate? I'm always putting the damn thing on edge and then can never find it again. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 [Non-text portions of this message have been removed]
Re: [BlindHandyMan] electric motor question
Not quite. 4 hp is 2984 watts which is 24.9 amps for the actual US and Canada line voltage of 120 volts. A 30 amp circuit would do it but I have never seen 120 volt outlets and plugs rated at 30 amps. You would have to hard wire the compressor to the building wiring. By the way. The line voltage standard was raised from 110 to 120 sometime in the late 1930s. My dad always called it 110 because that's what he grew up with. I am surprised to hear someone still using the old nomenclature 70 years after the change. Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] - Original Message - From: David Sexton [EMAIL PROTECTED] To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:53 PM Subject: Re: [BlindHandyMan] electric motor question um? 4hp at 110 volts? impossible! - Original Message - From: Larry Stansifer To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:38 PM Subject: RE: [BlindHandyMan] electric motor question It seems like Sears advertises a 4HP 110V AC air compressor. -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David W Wood Sent: Monday, February 11, 2008 1:51 PM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- BEGIN-ANTISPAM-VOTING-LINKS -- Teach InfoWest Spam Trap if this mail (ID 156530114) is spam: Spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=s Not spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=n Forget vote: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=f -- END-ANTISPAM-VOTING-LINKS [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man
Re: [BlindHandyMan] electric motor question
Is my math right that that motor would need to draw 26 plus Imps? Oofda. Bill To find out about our lists please go to http://www.geocities.com/wsvh7072/lists.html If you wish a copy of lists please Email us at [EMAIL PROTECTED] or at [EMAIL PROTECTED] - Original Message - From: Larry Stansifer [EMAIL PROTECTED] To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:38 PM Subject: RE: [BlindHandyMan] electric motor question It seems like Sears advertises a 4HP 110V AC air compressor. -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David W Wood Sent: Monday, February 11, 2008 1:51 PM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- BEGIN-ANTISPAM-VOTING-LINKS -- Teach InfoWest Spam Trap if this mail (ID 156530114) is spam: Spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=s Not spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=n Forget vote: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=f -- END-ANTISPAM-VOTING-LINKS To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links
Re: [BlindHandyMan] electric motor question
Yes, You will hear all sorts of outrageous claims. The router manufacturers would have us understand that they can make a router with 3.25 horse power motors. Then they talk in terms of break horse power and stuff. My compressor occasionally blows the breaker on start-up and it is the only thing on that circuit which runs only about 15 feet. For all pradtical purposes you won't get more than a horsepower and a half from a 15 amp circuit, doubtless though Dan's formula is theoretically correct. - Original Message - From: David Sexton To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 5:53 PM Subject: Re: [BlindHandyMan] electric motor question um? 4hp at 110 volts? impossible! - Original Message - From: Larry Stansifer To: blindhandyman@yahoogroups.com Sent: Monday, February 11, 2008 4:38 PM Subject: RE: [BlindHandyMan] electric motor question It seems like Sears advertises a 4HP 110V AC air compressor. -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David W Wood Sent: Monday, February 11, 2008 1:51 PM To: blindhandyman@yahoogroups.com Subject: RE: [BlindHandyMan] electric motor question Here in the U.K. it is 4 horse power per single A.C. outlet. David -Original Message- From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ferrin Sent: Monday, February 11, 2008 8:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] electric motor question I'm trying to remember how much in the way of horse power can be generated by a motor operating off a standard electrical outlet. I know it isn't much, probably less than 3 horse power, I just can't recall at this time. David Ferrin www.jaws-users.com [Non-text portions of this message have been removed] To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1270 - Release Date: 10/02/2008 12:21 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links -- BEGIN-ANTISPAM-VOTING-LINKS -- Teach InfoWest Spam Trap if this mail (ID 156530114) is spam: Spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=s Not spam: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=n Forget vote: https://spamtrap.infowest.com/canit/b.php?i=156530114m=2501e0848262c=f -- END-ANTISPAM-VOTING-LINKS [Non-text portions of this message have been removed] -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.2/1271 - Release Date: 2/11/2008 8:16 AM [Non-text portions of this message have been removed]
