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Wrenches,<br>
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.<br>
<br>
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.<br>
<br>
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?<br>
<br>
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.<br>
<br>
Thanks, Allan<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b>Positive Energy, Inc.</b><br>
3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
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