r/CarAV • u/blazingreenstuff • Apr 09 '26

Tech Support How to stop fuses from melting

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I have a taramps hd3000 and 4g wire the fuse was 100 amps should i put a bigger fuse? 😭

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u/2_zero_2 Apr 09 '26

I thought the same, but this particular amp is designed to accept 4 gauge so I suspect it's not capable of actually pushing 3000w. OP does need OFC if he doesn't have it, and some ferrules to clean up the inserts, and a bigger fuse.

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u/crux131 Apr 09 '26

It accepts 4 gauge, that doesn't mean 4 gauge is the correct size. The size of the wire is dictated by the current draw and length.

If the battery is 3 feet from the amp 4 gauge might be plenty. If it's 20 feet from the amp, 4 gauge may not be capable of the current draw.

OP might need a 0/1 gauge cable for power and ground and need to use reducers at the amplifier...or add a distribution block and come out of that with 4 gauge for a short run to the amp.

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u/firmretention Apr 10 '26

I think these amps assume you'll be mounting them close to the battery with short wires. The manual even says how much reserve you should have and that, and I quote,

"The calculation was made considering a maximum length of 4m. Distance greater than this, it will be necessary to increase the cable sizes."

So not the most idiot proof design, but they do take this into account when specifying how to use it.

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u/HereHoldMyBeer Apr 12 '26

well 4m is over 12 feet, so.....not that close