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A #8 wire with an insulation rating of 75 or 90 degrees C is rated at 45 amps.

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Q: What gauge wire would you need to carry 40 amps at 12 volts dc?
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What wire gauge is needed to carry 150 amps at 240 volts?

At the service entrance you will need AWG 1/0 gauge.


What gauge wire would you need to carry 100 amps at 12 volts dc?

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