Re: [RE-wrenches] Supply Side Tap Overcurrent Protection

2010-03-29 Thread Dave Click
Looks like your question is answered but something else to look out for- this is pretty straight-forward for batteryless systems but for battery-backup and a line-side tie, you're adding a big load to the service conductors for battery charging and pass-through current to critical loads. If you

Re: [RE-wrenches] Kohler Generator Issues

2010-03-29 Thread Jeff Yago
Although we have specified and included Kohler RES models in all our off-grid and battery based solar projects for over 15 years, we have seen a real decline in the suitability of the Kohler line in the past few years for use in solar/battery/generator applications. First they killed off the 1

Re: [RE-wrenches] Dover Delaware & New Jersey Installers

2010-03-29 Thread Jeff Yago
We have a very good nationa-size client wanting to find a solar installer or commercial electrical contractor with solar experience for two projects in the Dover Delaware and New Jersey areas. One project is in the Mega-watt range and the other is much smaller. This is a good client of ours, b

Re: [RE-wrenches] Supply Side Tap Overcurrent Protection

2010-03-29 Thread August Goers
Hi All, I think it is clear that a fused disconnect is required next to the service tap. But I have one other thought. When we install line side taps we always run the wire between the disconnect and service panel in rigid conduit and bond both sides of the conduit just like we would do with s

Re: [RE-wrenches] NABCEP Exam was: PV excellent battery charger

2010-03-29 Thread Joel Davidson
Developing test questions is an on-going process as knowledge, understanding, and language evolve. The PV industry started using 32 to 38 silicon single crystal solar cells in series to charge 12-volt batteries. At first, 33-cell modules were used without charge controllers for smaller PV syste

Re: [RE-wrenches] NABCEP Exam was: PV excellent battery charger

2010-03-29 Thread Joel Davidson
I forgot to include the reference for PV battery charging without a charge controller. It is 'Solar Photovoltaic Applications Seminar: Design, Installation and Operation of Small, Stand-Alone Photovoltaic Power Systems,' July 1980, 351 pages, DOE/CS/32522-T1 "Direct electrical connection of the

Re: [RE-wrenches] AFCI compatibility with modified waveforminverters

2010-03-29 Thread All Solar, Inc. Jeremy Rodriguez
Will not work with Xantrex TR series, formerly DR. After the inverter was on for about 5 minutes, the AFCI breakers began tripping. Jeremy - Original Message - From: "Darryl Thayer" To: "RE-wrenches" Sent: Sunday, March 28, 2010 10:53 PM Subject: Re: [RE-wrenches] AFCI compatibility

Re: [RE-wrenches] Kohler Generator Issues

2010-03-29 Thread All Solar, Inc. Jeremy Rodriguez
Jeff, check out Gillette Generators. Prime power warranty. and 'ok with inverter' Jeremy - Original Message - From: "Jeff Yago" To: "RE-wrenches" Sent: Monday, March 29, 2010 8:53 AM Subject: Re: [RE-wrenches] Kohler Generator Issues Although we have specified and included Kohler R

Re: [RE-wrenches] NABCEP Exam was: PV excellent battery charger

2010-03-29 Thread Matt Lafferty
I wholeheartedly agree with and can confirm what Bob-O said. -Matt Lafferty _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bob-O Schultze Sent: Sunday, March 28, 2010 9:19 AM To: RE-wrenches Subject: [RE-wrenches] NABCE

Re: [RE-wrenches] Kohler Generator Issues

2010-03-29 Thread Darryl Thayer
Although the 48 volt output from the Cummings small gen is unusual, I like the Propane option, and perhaps it is suitable. It is small, 5 kW but also batteries last longer on a slow charge. It also has a controlled output to do battery charging. Darryl --- On Mon, 3/29/10, All Solar, Inc. J