Calling on Solar Techies
I have been thinking of going solar for some time and decided to pull the plug. My wants are a 400 to 500 watt system. I have four 12 volt batteries with 340ah. I am not planning on changing b...
Forum Discussion
1L243,
I have MPPT, and only 256 watts of panels. I used #8 wire for a 4 foot run to the battery bank(s). My charge controller is temperature compensated and I've seen 15.2 volts. I get about 17 amps of output if the batteries are hungry, or I turn on a large load.
I'd encourage you to have a catastrophic failure fuse extremely close to the battery. Mine are on the battery posts (I have twin banks).
With 30 amps I would go for #4 or #6 wire from the controller to the battery bank. #10 is not going to help.
My overall voltage drop from panels to controller is less than 1%. The nominal input voltage to the controller is 33.
I have MPPT, and only 256 watts of panels. I used #8 wire for a 4 foot run to the battery bank(s). My charge controller is temperature compensated and I've seen 15.2 volts. I get about 17 amps of output if the batteries are hungry, or I turn on a large load.
I'd encourage you to have a catastrophic failure fuse extremely close to the battery. Mine are on the battery posts (I have twin banks).
With 30 amps I would go for #4 or #6 wire from the controller to the battery bank. #10 is not going to help.
My overall voltage drop from panels to controller is less than 1%. The nominal input voltage to the controller is 33.
