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8 AWG copper.

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12y ago
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5mo ago

For a 42 amp circuit, you should use at least a 8-gauge wire to ensure it can handle the current safely and prevent overheating. It's always best to consult the National Electrical Code (NEC) or a licensed electrician for specific wiring requirements to ensure compliance with local regulations.

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Q: What size wire do you need for 42 amp circuit?
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