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Wire size varies in lenght

Practical Motorsport Wiring - Club Level

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Hi, I got a question to ask about the wire gauge compared to length. The longer the wire is do you need to increase the wire diameter? if so whats the ratio gauge to length. Thanks

This was a good learning curve for me too. This calculator helps no end.

Firstly you need to know the length of your run and the total amperage required by the component. Enter it in the calculator along with the expected voltage drop (start by using 5%) and see what answers you get.


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