Solar Kit
Just received my kit. 2 100w panels with a 30a pwm controller. Hoping it will recharge my 2 GC2's. I am alone in the trailer and power use is min. Any thoughts?
Forum Discussion
waynefi wrote:jrnymn7 wrote:
wayne said,
"I'm seeing about a 0.6 volt difference between the battery and the controller with 3.5 amps flowing. That is a bit more than I expected."
That is excessive voltage drop for only 3.5a. For example, I see .09v (point zero nine) drop at 45a. It may be simply a disagreement in meter readings, between the controller's display and whatever you used to read voltage at the batteries? Confirm all readings with a single handheld meter, to be sure.
About 0.1v seems to be a mismatch between the meters. This seems to be about 16 gauge wire, which would be .004 ohms/foot. 3 amps over 30 feet at .004 ohms/foot should be 0.36 volts
There could be additional losses at the connections, and for sure if there's a circuit breaker or fuse in the circuit. Is that 30' one way, or round trip?
