diy solar

diy solar

Solar panel fuse selection

bigjon

New Member
Joined
Aug 10, 2022
Messages
28
HI Everyone, I have 5 100w panels in parallel 5.26a= 26.3 total. the short circuit is 5.55a per panel. using 10awg solar panel cable about 35ft long will a 30a breaker of fuse close to the mppt 60a charge cont.or use a built in 10a inline fuse holder for MC4 connectors connected to 5 to 1 branch connector. also using 6awg 2ft from SCC to battery
 
Back of panel has a max fuse rating on the label. Use that.

You must fuse each string, i.e., each panel needs its own fuse. One MC4 fuse at each panel will do it. You may also opt to add a 40A breaker between SCC PV+ and array for easy on/off.

Also need a 62.5A fuse between SCC and battery +. Since your array will likely not produce more than 42A, I would select a 60A fuse.

Do not buy cheap amazon stuff. Splurge for Blue Sea, Littlefuse, etc.
 
Back
Top