Quick noobie question to settle dispute.

[Saint211 10+ year member]

A fuse on the wire from the rear batt or distro to the amplifier, if the correct size, does help keep the amp safe. Yes fuses are there to protect the wire, but the point is if that wire starts to draw more amperage than the amp is meant for(because its fused with the correct size) the fuse will pop.

The only thing is some fuses have a retarded pop time. For example, a 200 amp ANL fuse can pull 220 amps for a while before it pops. It would need to get up near 300-400 amps to pop really quick. This is ideal for protecting the battery line, because a short in the battery line will dump the entire battery fairly quickly, much more than enough to pop the average fuse.

So, its up for debate on the amp line. Opinions?

 

[lilmaniac2 5,000+ posts]

There should be 2 fuses between batteries, and 1 between amp and battery to be 100% safe.

Reason being if there is a short in the wire between the two batteries you must break the circuit at BOTH points where there is stored energy.

You need a fuse between amp and battery because if there is a short in the powersupply of the amp then it catches on fire