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Wrenches, Sometimes I encounter a situation that I have never encountered, simply because it's so far beyond normal limits that I would never try it to find out what would happen. Here's one. A did-it-myself customer called me for batteries for his system. I learned he has a 12V system, with twelve 100 watt PV modules and a Xantrex C-40 controller. He has been using this for five years. Twelve 100W modules is around 80-90 amps - double or more the C-40's capacity. Assuming that what he told was accurate, why is the C-40 still working? Is it current-limited internally? By the way, since he had a 7,000 watt (yeah, right) 12V inverter from a truck stop, I encouraged him to buy a 24V inverter and rewire everything to 24V; then his C-40 would (just) work. Thanks, Allan --
Allan Sindelar al...@positiveenergysolar.com NABCEP Certified Photovoltaic Installer NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc. 3209 Richards Lane (note new address) Santa Fe, New Mexico 87507 505 424-1112 www.positiveenergysolar.com
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