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It depends on the application, but for Single-Phase dwelling service and feeders

3 AWG copper is good for 110 amps. That really equates to 100 amps since you can't get a 110 amp circuit breaker.

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12y ago
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8y ago

Impossible to answer without knowing the voltage and length of wire you intend to run.

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Q: How many amps is 3 awg wire good for?
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