answer 1
When the length of the wire is not more than 2 ft. for the battery connection distance round trip, than 6 or 8 gauge wire will be used. When the solar array connection distance round trip is 20 feet, than 10 gauge wire is needed. If the distance is 30 ft., than 8 gauge wire is needed. If the distance is 40 ft., than 6 gauge wire is needed. It is better to use stranded wire than solid wire.
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answer 2
This controller at 30A and rated for a 12V system is more controller than the one 110W panel and one battery needs. (110w divided by 15v (max) = 7.33a) But, since you'll probably be adding panels to supply your needs in the future (and the 'battery' won't run a teevee all evening and a small fridge over night, so you'll need a bank of them), don't skimp now. Get this controller and use 10gauge wire. It's rated at 30 amps, but even with drop, will support three of your panels. I'd suggest you get 2 (4 would be better) golf cart type 6V deep cycle batteries instead of a marine 12v. It's a piece of cake to wire them to 12 volts. Your dark hour (evening/night) use will dictate how big a battery bank you need. If you buy small now, you'll be replacing gear soon.
answered 4 months, 1 week ago
by
Steveincolorado
- colorado mountains
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