[RE-wrenches] Presentation to Fire Fighters

2014-04-11 Thread Will White
Wrenches,

I know some of you have done presentations to fire fighters in the past.  I 
have one of these presentations coming up in about a month and wanted to see if 
anyone was willing to share their slide shows.  If you are please contact me 
off list.

Thanks,
Will
william.wh...@rgsenergy.commailto:william.wh...@rgsenergy.com

Will White
Operations Manager - New England
RGS Energy


64 Main St. |Montpelier, VT 05602
tel 802.223.7804 | mobile 802.234.3167 | fax 802.223.8980

RGSEnergy.comhttp://www.rgsenergy.com/ | 
william.wh...@rgsenergy.commailto:william.wh...@rgsenergy.com

Confidentiality Note: This e-mail message may contain confidential or legally 
privileged information and is intended only for the use of the intended 
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or the taking of any action in reliance on the information herein is 
prohibited. E-mails are not secure and cannot be guaranteed to be error free as 
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[RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread Troy Harvey
1. I'm interest in a poll of installers who are using flashings vs sealant. Now 
that the flashing market has evolved, what are you using today? When did you 
switch to flashings (if you did). And why not, if you still prefer sealant.

2. Is there a any code defense for sealant systems ? (L-foot sealed down to 
shingles). Does anyone know of a scientific shootout between sealants and 
flashings?

Here is my view: The construction industry is slow to evolve. Sealants, clauks 
 adhesives are not trusted in general, due to the legacy of code, and we have 
a mechanical vs. chemical industry bias. 

There is something about seeing a flashing that says, that is a professional 
job, it must comply with code. And yet, my experience says I'd trust a 50-year 
silicone over a flashing that depends on gravity. Gravity should be dependable 
right? But anyone in snow country can tell you in spring, water can go uphill 
after ice dams form. There are high-rise buildings that use structural 
glazing which is just glass and silicone. These systems are now getting to be 
50 years old without issue.

The cost of flashings have come down in the last few years, but so has the cost 
per watt of installs. With 50 feet in a typical install around here that is 
$150 in feet, lags  silicone. Or $1500 in flashings, and extra labor. That can 
be a large part of a bid, and make you more expensive in a competitive 
landscape. That is fine, if it adds value... but I personally don't see the 
proven value, other than the appearance of code defensibility. Anybody have 
proof?

thanks,

Troy Harvey
-
Principal Engineer
Heliocentric
801-453-9434
tahar...@heliocentric.org
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Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread August Goers
Hi Troy,



There has been an ongoing debate on the RE-Wrenches list on this issue for
years now. I've personally serviced many old L-feet systems that are fine
and some that are leaking. The leaks normally occur in the missed holes
adjacent to the L-foot. Also, many installers were using Sikaflex which
over time loses its adhesion to comp shingles. Sloppy work is the worst
culprit.



We've used all sorts of flashings over the years and primarily stick with
Quickmount E-series these days. All holes, both hits and misses, are
squirted with M-1 sealant (from Chemlink) and we slide aluminum flashing
(standard rolls of aluminum cut to size in the field) under the shingles
for the missed holes.



We've never had a leak with a properly flashed system and I am a strong
proponent for using flashing products for all mounting points.



Best,



August



Luminalt



*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Troy Harvey
*Sent:* Friday, April 11, 2014 12:20 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Flashing vs Sealant... again (is sealant code
defensible?)



1. I'm interest in a poll of installers who are using flashings vs sealant.
Now that the flashing market has evolved, what are you using today? When
did you switch to flashings (if you did). And why not, if you still prefer
sealant.



2. Is there a any code defense for sealant systems ? (L-foot sealed down to
shingles). Does anyone know of a scientific shootout between sealants and
flashings?



Here is my view: The construction industry is slow to evolve. Sealants,
clauks  adhesives are not trusted in general, due to the legacy of code,
and we have a mechanical vs. chemical industry bias.



There is something about seeing a flashing that says, that is a
professional job, it must comply with code. And yet, my experience says
I'd trust a 50-year silicone over a flashing that depends on gravity.
Gravity should be dependable right? But anyone in snow country can tell you
in spring, water can go uphill after ice dams form. There are high-rise
buildings that use structural glazing which is just glass and silicone.
These systems are now getting to be 50 years old without issue.



The cost of flashings have come down in the last few years, but so has the
cost per watt of installs. With 50 feet in a typical install around here
that is $150 in feet, lags  silicone. Or $1500 in flashings, and extra
labor. That can be a large part of a bid, and make you more expensive in a
competitive landscape. That is fine, if it adds value... but I personally
don't see the *proven* value, other than the appearance of code
defensibility. Anybody have proof?



thanks,

Troy Harvey
-
Principal Engineer
Heliocentric
801-453-9434
tahar...@heliocentric.org
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Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread Will White
I've had a similar experience as August.

We're using Ecofasten Green Flashing plus all holes get a dab of Geocel 
Proflex.  We've also never had a problem with a properly flashed penetration.

Thanks,
Will

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of August Goers
Sent: Friday, April 11, 2014 3:44 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code 
defensible?)

Hi Troy,

There has been an ongoing debate on the RE-Wrenches list on this issue for 
years now. I've personally serviced many old L-feet systems that are fine and 
some that are leaking. The leaks normally occur in the missed holes adjacent to 
the L-foot. Also, many installers were using Sikaflex which over time loses its 
adhesion to comp shingles. Sloppy work is the worst culprit.

We've used all sorts of flashings over the years and primarily stick with 
Quickmount E-series these days. All holes, both hits and misses, are squirted 
with M-1 sealant (from Chemlink) and we slide aluminum flashing (standard rolls 
of aluminum cut to size in the field) under the shingles for the missed holes.

We've never had a leak with a properly flashed system and I am a strong 
proponent for using flashing products for all mounting points.

Best,

August

Luminalt

From: 
re-wrenches-boun...@lists.re-wrenches.orgmailto:re-wrenches-boun...@lists.re-wrenches.org
 
[mailto:re-wrenches-boun...@lists.re-wrenches.orgmailto:re-wrenches-boun...@lists.re-wrenches.org]
 On Behalf Of Troy Harvey
Sent: Friday, April 11, 2014 12:20 PM
To: RE-wrenches
Subject: [RE-wrenches] Flashing vs Sealant... again (is sealant code 
defensible?)

1. I'm interest in a poll of installers who are using flashings vs sealant. Now 
that the flashing market has evolved, what are you using today? When did you 
switch to flashings (if you did). And why not, if you still prefer sealant.

2. Is there a any code defense for sealant systems ? (L-foot sealed down to 
shingles). Does anyone know of a scientific shootout between sealants and 
flashings?

Here is my view: The construction industry is slow to evolve. Sealants, clauks 
 adhesives are not trusted in general, due to the legacy of code, and we have 
a mechanical vs. chemical industry bias.

There is something about seeing a flashing that says, that is a professional 
job, it must comply with code. And yet, my experience says I'd trust a 50-year 
silicone over a flashing that depends on gravity. Gravity should be dependable 
right? But anyone in snow country can tell you in spring, water can go uphill 
after ice dams form. There are high-rise buildings that use structural 
glazing which is just glass and silicone. These systems are now getting to be 
50 years old without issue.

The cost of flashings have come down in the last few years, but so has the cost 
per watt of installs. With 50 feet in a typical install around here that is 
$150 in feet, lags  silicone. Or $1500 in flashings, and extra labor. That can 
be a large part of a bid, and make you more expensive in a competitive 
landscape. That is fine, if it adds value... but I personally don't see the 
proven value, other than the appearance of code defensibility. Anybody have 
proof?

thanks,

Troy Harvey
-
Principal Engineer
Heliocentric
801-453-9434
tahar...@heliocentric.orgmailto:tahar...@heliocentric.org
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Re: [RE-wrenches] Presentation to Fire Fighters

2014-04-11 Thread Dan Fink
Hello Will;
I've contacted you off list, but am posting here so the information is out
there. I do teach a ISPQ / IREC / NABCEP accredited class for RE
professionals on what and how to teach firefighters, and because travel is
such an expensive PITA am working towards an online version this year; the
first online class is coming up later this month.

In my opinion, the issues are overblown a bit on both sides by both RE
installers and firefighters, the Code / AHJ reactions are in the right
spirit but not satisfoactory yet, and OUTREACH training from RE
professionals to firefighters is by far the most important factor.

Dan Fink,
Executive Director;
Otherpower
Buckville Energy Consulting
Buckville Publications LLC
NABCEP / IREC accredited Continuing Education Providers
970.672.4342




On Fri, Apr 11, 2014 at 1:09 PM, Will White william.wh...@rgsenergy.comwrote:

  Wrenches,



 I know some of you have done presentations to fire fighters in the past.
 I have one of these presentations coming up in about a month and wanted to
 see if anyone was willing to share their slide shows.  If you are please
 contact me off list.


 Thanks,

 Will

 william.wh...@rgsenergy.com



 *Will White*
 Operations Manager - New England

 RGS Energy

 64 Main St. |Montpelier, VT 05602
 tel 802.223.7804 | mobile 802.234.3167 | fax 802.223.8980

 *RGSEnergy.com http://www.rgsenergy.com/ **|
 william.wh...@rgsenergy.com william.wh...@rgsenergy.com *

 *Confidentiality Note: *This e-mail message may contain confidential or
 legally privileged information and is intended only for the use of the
 intended recipient(s). Any unauthorized disclosure, dissemination,
 distribution, copying or the taking of any action in reliance on the
 information herein is prohibited. E-mails are not secure and cannot be
 guaranteed to be error free as they can be intercepted, amended, or contain
 viruses. Anyone who communicates with us by e-mail is deemed to have
 accepted these risks. RGS Energy is not responsible for errors or omissions
 in this message and denies any responsibility for any damage arising from
 the use of e-mail. Any opinion and other statement contained in this
 message and any attachment are solely those of the author and do not
 necessarily represent those of the company.





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Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread Ray Walters
It definitely depends on the flashing. The Oatey type with the rubber 
gasket die after several years, and leak.
For our installations, it really depends on the roof.  In some cases 
with metal roofs, a flashing can't really have the overlap needed, and 
so it just becomes a big gooed on L foot really.
Also, I look at L feet as a small 2 x 2 flashing.  Relative to the 
hole size this is often a reasonable amount of sealing surface.  Compare 
this to your average 4 plumbing penetration vs the size of the 
flashing.   Look at how bulk head fittings on water tanks work.  They're 
under several feet of water, and depend on a rubber gasket, not a flashing.


I also consider what's under the roof too.  A leak on an open carport is 
not as much liability as a leak over the vintage Steinway grand piano.
Finally, if the roof is already having problems, (I love when they say: 
it only leaks when it rains..)  you need to look at re roofing, 
and have the roofer seal around your mounts.


R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 4/11/2014 1:52 PM, Will White wrote:


I've had a similar experience as August.

We're using Ecofasten Green Flashing plus all holes get a dab of 
Geocel Proflex.  We've also never had a problem with a properly 
flashed penetration.


Thanks,

Will

*From:*re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of 
*August Goers

*Sent:* Friday, April 11, 2014 3:44 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Flashing vs Sealant... again (is sealant 
code defensible?)


Hi Troy,

There has been an ongoing debate on the RE-Wrenches list on this issue 
for years now. I've personally serviced many old L-feet systems that 
are fine and some that are leaking. The leaks normally occur in the 
missed holes adjacent to the L-foot. Also, many installers were using 
Sikaflex which over time loses its adhesion to comp shingles. Sloppy 
work is the worst culprit.


We've used all sorts of flashings over the years and primarily stick 
with Quickmount E-series these days. All holes, both hits and misses, 
are squirted with M-1 sealant (from Chemlink) and we slide aluminum 
flashing (standard rolls of aluminum cut to size in the field) under 
the shingles for the missed holes.


We've never had a leak with a properly flashed system and I am a 
strong proponent for using flashing products for all mounting points.


Best,

August

Luminalt

*From:*re-wrenches-boun...@lists.re-wrenches.org 
mailto:re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org 
mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of 
*Troy Harvey

*Sent:* Friday, April 11, 2014 12:20 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Flashing vs Sealant... again (is sealant code 
defensible?)


1. I'm interest in a poll of installers who are using flashings vs 
sealant. Now that the flashing market has evolved, what are you using 
today? When did you switch to flashings (if you did). And why not, if 
you still prefer sealant.


2. Is there a any code defense for sealant systems ? (L-foot sealed 
down to shingles). Does anyone know of a scientific shootout between 
sealants and flashings?


Here is my view: The construction industry is slow to evolve. 
Sealants, clauks  adhesives are not trusted in general, due to the 
legacy of code, and we have a mechanical vs. chemical industry bias.


There is something about seeing a flashing that says, that is a 
professional job, it must comply with code. And yet, my experience 
says I'd trust a 50-year silicone over a flashing that depends on 
gravity. Gravity should be dependable right? But anyone in snow 
country can tell you in spring, water can go uphill after ice dams 
form. There are high-rise buildings that use structural glazing 
which is just glass and silicone. These systems are now getting to be 
50 years old without issue.


The cost of flashings have come down in the last few years, but so has 
the cost per watt of installs. With 50 feet in a typical install 
around here that is $150 in feet, lags  silicone. Or $1500 in 
flashings, and extra labor. That can be a large part of a bid, and 
make you more expensive in a competitive landscape. That is fine, if 
it adds value... but I personally don't see the /proven/ value, other 
than the appearance of code defensibility. Anybody have proof?


thanks,

Troy Harvey
-
Principal Engineer
Heliocentric
801-453-9434
tahar...@heliocentric.org mailto:tahar...@heliocentric.org



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Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread Benn Kilburn
I would have to definitely lean towards using flashings as a default and
have been doing so now for several years.  Last project i wanted to use
flashings on and couldn't was in 2010.  I couldn't because it was a 10-13
deg slope with asphalt shingles that were really good quality and made for
low slope and resistant to high wind, this meant that each course of
shingle was very well adhered to the course below it, to the point that it
was next to impossible to lift the shingles to insert a flashing.  I tried
everything short of using a heat gun or torch to warm them up first.

I cannot quote anything, but i believe that there is an issue with voiding
roof warranties if you do not flash a penetration.

Always make sure that the sealant you choose is compatible with the roof
and any other material it will contact.  I believe there was an issue years
ago where many installers were using a popular sealant that (if you read
the small print) was not compatible with asphalt shingles.

My sealant of choice these days is Henry 925.

I would be very interested to see, if anyone would be willing to share (on
or off-list), photos of any signs of leaking or leak damage caused by
failed roof penetrations.

Cheers,
Benn


On Fri, Apr 11, 2014 at 1:20 PM, Troy Harvey tahar...@heliocentric.orgwrote:

 1. I'm interest in a poll of installers who are using flashings vs
 sealant. Now that the flashing market has evolved, what are you using
 today? When did you switch to flashings (if you did). And why not, if you
 still prefer sealant.

 2. Is there a any code defense for sealant systems ? (L-foot sealed down
 to shingles). Does anyone know of a scientific shootout between sealants
 and flashings?

 Here is my view: The construction industry is slow to evolve. Sealants,
 clauks  adhesives are not trusted in general, due to the legacy of code,
 and we have a mechanical vs. chemical industry bias.

 There is something about seeing a flashing that says, that is a
 professional job, it must comply with code. And yet, my experience says
 I'd trust a 50-year silicone over a flashing that depends on gravity.
 Gravity should be dependable right? But anyone in snow country can tell you
 in spring, water can go uphill after ice dams form. There are high-rise
 buildings that use structural glazing which is just glass and silicone.
 These systems are now getting to be 50 years old without issue.

 The cost of flashings have come down in the last few years, but so has the
 cost per watt of installs. With 50 feet in a typical install around here
 that is $150 in feet, lags  silicone. Or $1500 in flashings, and extra
 labor. That can be a large part of a bid, and make you more expensive in a
 competitive landscape. That is fine, if it adds value... but I personally
 don't see the *proven* value, other than the appearance of code
 defensibility. Anybody have proof?

 thanks,

 Troy Harvey
 -
 Principal Engineer
 Heliocentric
 801-453-9434
 tahar...@heliocentric.org

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 www.members.re-wrenches.org



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Re: [RE-wrenches] Flashing vs Sealant... again (is sealant code defensible?)

2014-04-11 Thread Bill Loesch


Hi Ray,

Ten plus years ago, I observed this one thermal installation which also 
used the Oatey flexible gasket. Most all the 80's era installs had 
seriously deteriorated gaskets _except_ this one where the homeowner had 
painted everything with latex paint. That gasket was not deteriorated 
and was still flexible. That small UV film barrier was really beneficial.


Automotive CV boots are available with a split for replacement use. I'm 
told that if you allow the glue to dry properly (without moving the 
steering wheel) it works as good as the non split model. I would not be 
surprised if a similar product exists for plumbing/electrical 
penetrations. With paint, that should be the last gasket replacement.


Good luck all,

Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094

On 11-Apr-14 3:15 PM, Ray Walters wrote:
It definitely depends on the flashing.  The Oatey type with the rubber 
gasket die after several years, and leak.
For our installations, it really depends on the roof.  In some cases 
with metal roofs, a flashing can't really have the overlap needed, and 
so it just becomes a big gooed on L foot really.
Also, I look at L feet as a small 2 x 2 flashing.  Relative to the 
hole size this is often a reasonable amount of sealing surface.  
Compare this to your average 4 plumbing penetration vs the size of 
the flashing.   Look at how bulk head fittings on water tanks work.  
They're under several feet of water, and depend on a rubber gasket, 
not a flashing.


I also consider what's under the roof too.  A leak on an open carport 
is not as much liability as a leak over the vintage Steinway grand piano.
Finally, if the roof is already having problems, (I love when they 
say: it only leaks when it rains..)  you need to look at re 
roofing, and have the roofer seal around your mounts.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/11/2014 1:52 PM, Will White wrote:


I've had a similar experience as August.

We're using Ecofasten Green Flashing plus all holes get a dab of 
Geocel Proflex.  We've also never had a problem with a properly 
flashed penetration.


Thanks,

Will

*From:*re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of 
*August Goers

*Sent:* Friday, April 11, 2014 3:44 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Flashing vs Sealant... again (is sealant 
code defensible?)


Hi Troy,

There has been an ongoing debate on the RE-Wrenches list on this 
issue for years now. I've personally serviced many old L-feet systems 
that are fine and some that are leaking. The leaks normally occur in 
the missed holes adjacent to the L-foot. Also, many installers were 
using Sikaflex which over time loses its adhesion to comp shingles. 
Sloppy work is the worst culprit.


We've used all sorts of flashings over the years and primarily stick 
with Quickmount E-series these days. All holes, both hits and misses, 
are squirted with M-1 sealant (from Chemlink) and we slide aluminum 
flashing (standard rolls of aluminum cut to size in the field) under 
the shingles for the missed holes.


We've never had a leak with a properly flashed system and I am a 
strong proponent for using flashing products for all mounting points.


Best,

August

Luminalt

*From:*re-wrenches-boun...@lists.re-wrenches.org 
mailto:re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org 
mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of 
*Troy Harvey

*Sent:* Friday, April 11, 2014 12:20 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Flashing vs Sealant... again (is sealant 
code defensible?)


1. I'm interest in a poll of installers who are using flashings vs 
sealant. Now that the flashing market has evolved, what are you using 
today? When did you switch to flashings (if you did). And why not, if 
you still prefer sealant.


2. Is there a any code defense for sealant systems ? (L-foot sealed 
down to shingles). Does anyone know of a scientific shootout between 
sealants and flashings?


Here is my view: The construction industry is slow to evolve. 
Sealants, clauks  adhesives are not trusted in general, due to the 
legacy of code, and we have a mechanical vs. chemical industry bias.


There is something about seeing a flashing that says, that is a 
professional job, it must comply with code. And yet, my experience 
says I'd trust a 50-year silicone over a flashing that depends on 
gravity. Gravity should be dependable right? But anyone in snow 
country can tell you in spring, water can go uphill after ice dams 
form. There are high-rise buildings that use structural glazing 
which is just glass and silicone. These systems are now getting to be 
50 years old without issue.


The cost of flashings have come down in the last few years, but so 
has the cost per watt of installs. With 50 feet in a typical install 
around here that is 

[RE-wrenches] Golf Cart Array

2014-04-11 Thread Bob-O Schultze
Esteemed and just steamed Fellows,
I've rebuilt an old dead 36V golf cart and I'd like to put an array on it. The 
problem is that the roof area is only 40 x 65ish and it's 36V. I'm OK with a 
bit of overhang the 65 dimension, but not side to side as it will be a head 
bumper getting in and out. Don't want to put anything less than 150W up there 
and more, of course, is mo betta. Got an MPPT controller embedded in so higher 
voltage is not an issue. My first thought is to find three old M55s which are 
only 13 wide, but I'm open to whatever. The beauty of the M55s would be they 
are UPS-able. So... anybody got some? Other suggestions? Got lots of trading 
stock.
Thanks, Bob-O

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Re: [RE-wrenches] Golf Cart Array

2014-04-11 Thread Tom Pollock
 Bob-o
I've got two Arco M 75's, 13x48. 48 W, 3.72 A, 22 volt. Their yours, if you use 
them.
Tom
 
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Re: [RE-wrenches] Golf Cart Array

2014-04-11 Thread Carl Hansen

  Bob-O
   I did that once for a client, I used 3 Yingli 75s , they fit well 
but the array turned out to be to heavy for the Golf Carts roof frame, 
stress cracks started showing up.  I think I still have the 36 volt 
charge controller, built by Solar Converters, it never got installed, if 
you happen to need one its available.


  Carl Hansen
  HansenSun Elect.
  505 470-0770


On 4/11/2014 6:36 PM, Bob-O Schultze wrote:

Esteemed and just steamed Fellows,
I've rebuilt an old dead 36V golf cart and I'd like to put an array on it. The problem is that the 
roof area is only 40 x 65ish and it's 36V. I'm OK with a bit of overhang the 65 
dimension, but not side to side as it will be a head bumper getting in and out. Don't want to put 
anything less than 150W up there and more, of course, is mo betta. Got an MPPT controller embedded 
in so higher voltage is not an issue. My first thought is to find three old M55s which are only 
13 wide, but I'm open to whatever. The beauty of the M55s would be they are UPS-able. So... 
anybody got some? Other suggestions? Got lots of trading stock.
Thanks, Bob-O

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Re: [RE-wrenches] wrenches] Golf Cart Array

2014-04-11 Thread john
Bob-O
   I have a golf cart going on 5 years with 3 Sunwize 80 watt panels.  The only 
time we have plugged it in to a charger was a few days when the cart was 
working all day long each day for 3 days in a row at SolarFest picking up the 
trash and recycling.  We use it on our sheep farm the rest of the year and 
never plug it in.  We go up and down a 1 mile driveway with 500' vertical.  
Just did our first run this morning after having it sit in
a snow drift all winter. We just quit using our snowmobile to traverse the 
driveway and now we are in mud season.  Cart made it down and partway back up 
before getting stuck in the mud.  We have a Midnite Solar BCM to keep tabs on 
the battery and it has weathered 3 years outside mounted on the dash. I still 
need a charge controller... now I just keep turning the array on and off with a 
DC breaker in the battery compartment.  With something like the KID, most any 
panels would work.  We have kind of cooked the batteries from time to time... 
definitely got equalized.  The MNBCM is reading low voltage right now as it 
thinks we are a 48v system.! 
You can see a picture of it on my personal Facebook timeline.


John Blittersdorf
Central Vermont Solar  Wind




-Original Message-
From: Carl Hansen solar...@cybermesa.com
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Sent: Fri, Apr 11, 2014 11:05 pm
Subject: Re: [RE-wrenches] Golf Cart Array


   Bob-O
I did that once for a client, I used 3 Yingli 75s , they fit well 
but the array turned out to be to heavy for the Golf Carts roof frame, 
stress cracks started showing up.  I think I still have the 36 volt 
charge controller, built by Solar Converters, it never got installed, if 
you happen to need one its available.

   Carl Hansen
   HansenSun Elect.
   505 470-0770


On 4/11/2014 6:36 PM, Bob-O Schultze wrote:
 Esteemed and just steamed Fellows,
 I've rebuilt an old dead 36V golf cart and I'd like to put an array on it. 
 The 
problem is that the roof area is only 40 x 65ish and it's 36V. I'm OK with a 
bit of overhang the 65 dimension, but not side to side as it will be a head 
bumper getting in and out. Don't want to put anything less than 150W up there 
and more, of course, is mo betta. Got an MPPT controller embedded in so higher 
voltage is not an issue. My first thought is to find three old M55s which are 
only 13 wide, but I'm open to whatever. The beauty of the M55s would be they 
are UPS-able. So... anybody got some? Other suggestions? Got lots of trading 
stock.
 Thanks, Bob-O

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