Is a fuse a fuse?
I'm fusing my solar panels individually in the combiner box before they are combined. Initially, I purchased the 15a MC-4 fuse holder and the connectors. This came out to about 6-1/2" long. Too lon...
Forum Discussion
wa8yxm wrote:Fuse resistance and even wiring to the combiner is normally a non issue for for parallel 12V panels. Normally rated 18-20V for 14.8V battery charging. Doubtful that even a MPPT controller with parallel panels would have any practical loss due to fuses.
The only other thing would be the "inline resistance) of the fuse (The resistance pin to pin not blown) likely too low for your meter to measure but I'm not sure how the "Solar rated" fuses compare to standard automotive/house fuses in this aspect.
My 3 serial panels are NOT fused due to limited Isc from the other panels so no need for a fuse since it wold never blow. Not to mention the 9 bypass diodes that also protect the panels and add shade tolerance.
