Re: [RE-wrenches] Quick Mount PV flat-tile mount
One method of installing PV on tile (any type) is to remove the tile and install a rolled roof material under the array area. Then reinstall tile up to the edges of the array. The array is lowered and framed by the tile and allows for simple installation. It looks good too. Kindest Regards, Larry Crutcher Starlight Solar 11279 S. Glenwood Ave #4 Yuma, AZ 85367 (928) 941-1660 [EMAIL PROTECTED] www.starlightsolar.com Retail Store: 2998 Shari, Yuma, AZ Renewable Energy Products, Service and Installation On Dec 7, 2008, at 9:09 PM, Kelly Keilwitz, Whidbey Sun Wind wrote: Hi All, Anyone use the Quick-Mount PV system for tile? We don't do many tile roofs, but we have an upcoming job with flat cement tiles. In the past we've pulled the tiles, placed posts and flashed, cutting the tile to fit. It's a pain. The Quick Mount PV system, www.quickmountpv.com, replaces a tile with a exact-fit plastic flashing with integral flange that goes over the post. It sounds like it'll save a lot of time - if it works. Thanks, -Kelly Kelly Keilwitz, P.E. Whidbey Sun Wind, LLC Renewable Energy Systems NABCEP Certified PV Installer 987 Wanamaker Rd, Coupeville, WA 98239 PH FAX 360-678-7131 [EMAIL PROTECTED] ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] SDHW and High Mains Pressure
Dean, Thanks for the info on the tankless water heater. However, when I looked up the specs on the Watts regulator, I found the same behavior: zero pressure drop at zero flow. So the Watts regulator will not solve the problem of high water pressure at night (when there is zero or very little flow). Anyone else know of a control unit that can limit the water pressure (to say 60 psi) on the customer side under all flow conditions (including zero)? - Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 CA Lic. 854779, NABCEP Cert. 031806-26 [EMAIL PROTECTED] _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dean T. Newberry Sent: Sunday, December 07, 2008 4:18 PM To: RE-wrenches Subject: Re: [RE-wrenches] SDHW and High Mains Pressure Hello Peter, You want a Watts Regulator. Here's the link: http://www.watts.com/pro/_products_sub.asp?catId=64 http://www.watts.com/pro/_products_sub.asp?catId=64parCat=285 parCat=285 Good Luck Peter Parrish wrote: We are getting ready to install a SDHW system for a customer and we looked at a number of things regarding his current set up. I just posted a question about tankless heaters but I wanted this query to be a separate one. The customer's mains water pressure is 88 psi on a Saturday afternoon and some time over the next 18 hours, the pressure went as high as 96 psi. I understand that 80 psi is the high end of the safe range in general and that 96 psi on a regular basis can/will damage valves and possibly trigger TP valves on water heaters. At the recommendation of a plumber I know I looked into pressure reducers, specifically the Wilkins/Zurn line. All the Wilkins regulators produce zero pressure drop at zero flow. What good are these products in protecting plumbing systems from high mains pressures at night when pressures tend to be the highest and usage is at a minimum or even zero? Are there products that will prevent system pressures from exceeding a set point (e.g. 60 psi) under any flow condition including zero? - Peter Peter T. Parrish, President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 CA Lic. 854779, NABCEP Cert. 031806-26 [EMAIL PROTECTED] _ ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -- Dean T. Newberry Talbott Solar Radiant Homes Inc. 430 D Street Davis, CA 95616 T: 530 219-3606 F: 530 758-8187 E: [EMAIL PROTECTED] W: http://www.TalbottSolar.com/ http://www.TalbottRadiant.com/ ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Quick Mount PV flat-tile mount
I have not used the QMPV system on flat tile, and I wanted to suggest Tile Trac if you do one again. It is much easier and only a small 3/8 hole to drill which equates to less leakage problems. Just my 2w. On Sun, Dec 7, 2008 at 9:09 PM, Kelly Keilwitz, Whidbey Sun Wind [EMAIL PROTECTED] wrote: Hi All, Anyone use the Quick-Mount PV system for tile? We don't do many tile roofs, but we have an upcoming job with flat cement tiles. In the past we've pulled the tiles, placed posts and flashed, cutting the tile to fit. It's a pain. The Quick Mount PV system, www.quickmountpv.com, replaces a tile with a exact-fit plastic flashing with integral flange that goes over the post. It sounds like it'll save a lot of time - if it works. Thanks, -Kelly Kelly Keilwitz, P.E. Whidbey Sun Wind, LLC Renewable Energy Systems NABCEP Certified PV Installer 987 Wanamaker Rd, Coupeville, WA 98239 PH FAX 360-678-7131 [EMAIL PROTECTED] ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -- Jason Lombard / CSBA Open Hand Solar LLC. Pecos, NM. 87552 505 795 8646 [EMAIL PROTECTED] I'd put my money on solar energy… I hope we don't have to wait 'til oil and coal run out before we tackle that. —Thomas Edison ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Has Xantrex Changed Ownership?
Hi Peter, Yes Schneider Electric SA completed their acquisition of Xantrex in October, we are now a subsidiary. All customer support staff are the same great group, and I know they have been working with you on your issue. We will continue to work with you this week to help sort out what ever problem your site is having. Best Regards, Mark Mark Edmunds Xantrex Technology Inc. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Parrish Sent: Saturday, December 06, 2008 10:00 AM To: 'RE-wrenches' Subject: [RE-wrenches] Has Xantrex Changed Ownership? I am still having problems with Xantrex Customer Support, and I seem to remember a while ago a post about Schneider Electric S.A. purchasing Xantrex. Did this acquisition actually go through? I understood that there were some legal hurdles that had to be overcome. - Peter Peter T. Parrish, President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 CA Lic. 854779, NABCEP Cert. 031806-26 [EMAIL PROTECTED] ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] SDHW and High Mains Pressure
All of the pressure reducers I have seen work at no pressure - I think you are misreading the specification sheet - the zero drop at zero flow is referring to pressure drop due to flow - not due to the function of the regulator - its sort of like zero voltage drop at zero amps... The spec sheet on the Wilkins model 500 does say The assembly shall be of the balanced piston design and shall reduce pressure in both flow and no-flow conditions. I don't think they would sell many if they didn't reduce the pressure under no-flow conditions. Christopher Christopher Freitas Director of Research and Development OutBack Power Systems, Inc. [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] Tel 360 435 6030 Cell 360 202 4239 19009 62nd Ave NE Arlington WA 98223 USA www.outbackpower.com http://www.outbackpower.com/ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Parrish Sent: Sunday, December 07, 2008 3:22 PM To: 'RE-wrenches' Subject: [RE-wrenches] SDHW and High Mains Pressure We are getting ready to install a SDHW system for a customer and we looked at a number of things regarding his current set up. I just posted a question about tankless heaters but I wanted this query to be a separate one. The customer's mains water pressure is 88 psi on a Saturday afternoon and some time over the next 18 hours, the pressure went as high as 96 psi. I understand that 80 psi is the high end of the safe range in general and that 96 psi on a regular basis can/will damage valves and possibly trigger TP valves on water heaters. At the recommendation of a plumber I know I looked into pressure reducers, specifically the Wilkins/Zurn line. All the Wilkins regulators produce zero pressure drop at zero flow. What good are these products in protecting plumbing systems from high mains pressures at night when pressures tend to be the highest and usage is at a minimum or even zero? Are there products that will prevent system pressures from exceeding a set point (e.g. 60 psi) under any flow condition including zero? - Peter Peter T. Parrish, President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 CA Lic. 854779, NABCEP Cert. 031806-26 [EMAIL PROTECTED] MESSAGE CONFIDENTIALITY NOTICE: This message (including attachments) is covered by the Electronic Communication Privacy Act, 18 U.S.C. sections 2510-2521, is confidential, and may also be protected by attorney-client or other privilege. If you believe that it has been sent to you in error, please do not read it. If you are not the intended recipient,you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error, then delete it. Thank you. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] voltag drop
Round trip... (unless you are using a table that has already counted this in) Take care, Walt From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Marco Sent: Monday, December 08, 2008 2:13 PM To: re-wrenches@lists.re-wrenches.org Subject: [RE-wrenches] voltag drop I feel kinda foolish in asking this.but when calculating voltage drop in a conductor over distance, do I use the one-way or round-trip distance? thanks, marco Marco Mangelsdorf, Ph.D., President Electrical Contractor License C-26351 69 Railroad Avenue, Suite A-7 Hilo, Hawaii 96720 USA (808) 969-3281, fax 934-7462 www.provisiontechnologies.com http://www.provisiontechnologies.com/ image001.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] voltag drop
Depends on what table or calculations you are using. The current has to flow the full distance, out and back, but most tables I have seen have that figured into it. If you are using the resistance from something like AWG wire tables, then you need to use the round trip distance. .. Northern Arizona Wind Sun - Electricity From The Sun Solar Discussion Forum: http://www.wind-sun.com/ForumVB/ .. - Original Message - From: Marco To: re-wrenches@lists.re-wrenches.org Sent: Monday, December 08, 2008 3:12 PM Subject: [RE-wrenches] voltag drop I feel kinda foolish in asking this.but when calculating voltage drop in a conductor over distance, do I use the one-way or round-trip distance? thanks, marco Marco Mangelsdorf, Ph.D., President Electrical Contractor License C-26351 69 Railroad Avenue, Suite A-7 Hilo, Hawaii 96720 USA (808) 969-3281, fax 934-7462 www.provisiontechnologies.com -- ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org image002.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] voltag drop
Marco, I use the following formulas: single-phase Vd = (I x L x R x 2)/1000 3-phaseVd = (1.73 x I x L x R)/1000 L = one-way length R = resistance of conductor from Table 8 (usually from uncoated copper ohm/kFT column) Mike Michael Gullo Solar Solutions LLC Marlton, NJ NABCEP Certified PV Installer T [EMAIL PROTECTED] - Original Message - From: Marco To: re-wrenches@lists.re-wrenches.org Sent: Monday, December 08, 2008 5:12 PM Subject: [RE-wrenches] voltag drop I feel kinda foolish in asking this.but when calculating voltage drop in a conductor over distance, do I use the one-way or round-trip distance? thanks, marco Marco Mangelsdorf, Ph.D., President Electrical Contractor License C-26351 69 Railroad Avenue, Suite A-7 Hilo, Hawaii 96720 USA (808) 969-3281, fax 934-7462 www.provisiontechnologies.com -- ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org image002.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] voltag drop
This seems more convenient than remembering the constants for copper and aluminum. Please note that I did not give the complete units for those in my previous email. The units for ³k² in those formulas is ohms/mil foot. On 12/8/08 6:48 PM, Michael Gullo [EMAIL PROTECTED] wrote: Marco, I use the following formulas: single-phase Vd = (I x L x R x 2)/1000 3-phaseVd = (1.73 x I x L x R)/1000 L = one-way length R = resistance of conductor from Table 8 (usually from uncoated copper ohm/kFT column) Mike Michael Gullo Solar Solutions LLC Marlton, NJ NABCEP Certified PV Installer [EMAIL PROTECTED] - Original Message - From: Marco mailto:[EMAIL PROTECTED] To: re-wrenches@lists.re-wrenches.org Sent: Monday, December 08, 2008 5:12 PM Subject: [RE-wrenches] voltag drop I feel kinda foolish in asking this.but when calculating voltage drop in a conductor over distance, do I use the one-way or round-trip distance? thanks, marco Marco Mangelsdorf, Ph.D., President Electrical Contractor License C-26351 69 Railroad Avenue, Suite A-7 Hilo, Hawaii 96720 USA (808) 969-3281, fax 934-7462 www.provisiontechnologies.com http://www.provisiontechnologies.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org David Brearley, Technical Editor SolarPro magazine NABCEP Certified PV Installer [EMAIL PROTECTED] Direct: 541.261.6545 Fax: 541.512.0343 Visit our Web site at solarprofessional.com image.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
