Depends on how long the run is. Remember the fuse protects the wire not the load :-). Average run is 15ft, most run a 50amp, or 40amp.
SOURCE: Car amp re conecting the the battery
Hook up the battery, (the negative post) and then put the fuse in. This is the best choice because if you put in the fuse and then put the negative post back in and the wires slip when putting in the negative post, the fuse might blow due to the sparks. You will then need to get another fuse, which also mean sending more money.
SOURCE: Keep Blowing Fuses
Sounds like the amp is shorting somehow. You are obviously shorting out somewhere between the battery and the amp. Are you sure you grounding location is a good one? is the fuse blowing only when you turn the stereo on? Something is not hooked up correctly.
If the fuse at the battery is blowing then it's a short.
If the fuse on the amp is blowing then its probably a bad amp.
SOURCE: car amp blows 12 volt wire fuse
the wire from your battery is blowing fuses? and you are using 20-30 A fuses? mine has a 100A fuse..look into getting new wire plus my wire is 4 gauge.., 1600 watts is too powerful for a 12 g wire and a 30 A fuse
SOURCE: amp keeps blowin the two 30amp fuses on the amp.
Make sure that the speaker wires are wired correct at both the amp and the speakers......otherwise it sounds like the typical death of a power acoustik amp (great amps, but prone to a premature death)
I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_aad3edb7dfa380b9
SOURCE: amp keeps blowing the fuses
Serious short circuit on your output transistors, need replacing.
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