Fusing solar
If the controller is 30amp do you fuse the line for 30amps.
Forum Discussion
time2roll wrote:
Morningstar says to comply with NEC the fuse (battery to controller) s/b rated at least 20% over the controller rating and wire should have ampacity to match the fuse. So you are looking at 40 amp fuse and #8 wire minimum afaik. Fuse s/b close to the battery not the controller. If you are pushing near 30 amps I would have #6 wire minimum assuming wire fits the controller lugs.
The problem with the NEC on this is the rules apply to grid tie systems which RV's are not. I chose a breaker at the batteries to protect the wire and then another breaker at the CC to protect the electronics.
Just a different approach.
