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Reload Thread: 4 Gauge vs. 8 Gauge wire

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    ckunke002's Avatar
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    4 Gauge vs. 8 Gauge wire

    I have 2 amps and I currently have one 4 gauge power wire coming back from my battery to a distribution block and splitting into two 8 gauge wires. One of the amps is 300 watts and the other is 350. Do I need a bigger than 8 gauge wire powering my amps, or does it work since it's a 4 gauge wire splitting into 8 gauge? It's the size that they sold to me at my local car audio store so I'm just trusting I didn't need a lower gauge wire. I don't understand how this all works so please help!

    Thanks a lot!







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    Re: 4 Gauge vs. 8 Gauge wire

    Your good bro. I have a 300 watt amp and a 480 watt amp ran the same way you have, 4 gauge to the dist block, 8 gauge to amps.
    Last edited by Dr. Slam; 12-22-2011 at 11:59 AM.



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    Re: 4 Gauge vs. 8 Gauge wire

    Yep you're fine...8g's limit is around 80A, which comes out to be ~1000w. 4g's limit is 150 which is around ~2000w. Plus those runs of 8g you are doing are probably so short the wire can handle even more.




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    Re: 4 Gauge vs. 8 Gauge wire

    can you cut strands off a 4awg wire to fit in a 8awg terminal?




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    Re: 4 Gauge vs. 8 Gauge wire

    Quote Originally Posted by Bggd_GMC View Post
    can you cut strands off a 4awg wire to fit in a 8awg terminal?
    Yes but they make connectors that are used for that as well



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    Re: 4 Gauge vs. 8 Gauge wire

    Quote Originally Posted by SPLluminator View Post
    Yes but they make connectors that are used for that as well
    ill look for some




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    Re: 4 Gauge vs. 8 Gauge wire

    Thank you all a lot!




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    Re: 4 Gauge vs. 8 Gauge wire

    Depends on if the wire is a true 8AWG and 4AWG. What brand is it?



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