Re: [RE-wrenches] Convert Grid Tie SW4048 to Backup System; Add New Inverter, AC Coupled

2011-11-18 Thread Richard L Ratico
Jay, Marv, Chris, Ray, Joel & Maverick, Thanks tremendously for your input. Each of you provided interesting suggestions, all of which I find thought provoking and helpful. I greatly appreciate your taking the time to share your experience. Dick Solarwind Electric --- You wrote: We redid one i

Re: [RE-wrenches] 90 degree wire bends

2011-11-18 Thread Ray Walters
Was that on the hots or neutral? It's possible that might have been lightning too. I've heard of lightning using the pump wiring to get to the very well grounded well water. Ray On 11/18/2011 1:47 PM, Nik Ponzio wrote: I had an off-grid customer report that their huge well pump surge caused

Re: [RE-wrenches] 90 degree wire bends

2011-11-18 Thread Nik Ponzio
I had an off-grid customer report that their huge well pump surge caused an insulation melt-down at a tight bend in the wire. On Wed, Nov 16, 2011 at 11:01 PM, Darryl Thayer wrote: > I have seen the lightening damage at tight bends, but in my electrical > career of 60+ years I have not seen any

Re: [RE-wrenches] Code reviewer issue with array disconnect location

2011-11-18 Thread James Rudolph
Jeff, We have had some issues with this also .maybe try this ref from the 2011 code 690.16 (b) where the disconnect is located more than 1.8 m (6ft) from the overcurrent device, a directory showing the location of each disconnect shall be installed at the overcurrent device location On Thu, N

Re: [RE-wrenches] High-power MPPT/Charge Controllers?

2011-11-18 Thread Larry Crutcher, Starlight Solar Power Systems
Sounds like a project for Sunny Island and the Boy's. Larry Crutcher Starlight Solar Power Systems On Nov 18, 2011, at 10:49 AM, Exeltech wrote: > Need info on MPPT/charge controllers able to output up to 500A at 48Vdc. > High-voltage DC input (up to 300Vdc) preferred. Units will connect to a

Re: [RE-wrenches] High-power MPPT/Charge Controllers?

2011-11-18 Thread Maverick Brown [Maverick Solar]
Dan I just stacked 5 Xantrex XW-MPPT-600-80 controllers with 10 strings of 10 in series 225W modules (2 strings per controller). The XW PDP accumulated all this wiring to battery back. Thank you, Maverick Maverick Brown BSEET, NABCEP Certified Solar PV Installer ® President & CEO Maverick S

[RE-wrenches] High-power MPPT/Charge Controllers?

2011-11-18 Thread Exeltech
Need info on MPPT/charge controllers able to output up to 500A at 48Vdc. High-voltage DC input (up to 300Vdc) preferred.  Units will connect to a 20-24 kW PV array and 150 kW-h battery for a large off-grid system. Not locked into 48Vdc.  Can go up to 108Vdc (nominal) if needed. Any such CC units a