Review on 🔌 Bay Marine Supply MRBF Terminal Fuse Block Kit (Fuse Included) – Single Stud 5/16" (M8) Compact Marine Rated Battery Fuse 250A: Ensuring Reliable Power Protection for Marine Applications by Roberto Evans

If you have batteries, you must put them to protect your investment. If something shorts out, buying the right size fuses can prevent damage to the wire and fire. I have 6 deep cycles that involve my solar system. If something happens, they will save my system and my home. I only applied 75 amps at a time. 75 x 6 = 450 amps is a very large current that can cause serious damage. So don't think you need more than you should. Under size you burn out, if you burn out, find out why, then increase the size. Or simply design your system according to your needs. I see campers using 30 amp fuses in 5 amp radios. For real?