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What minimum American Wire Gauge (AWG) copper conductor is required for a standard 20-amp residential branch circuit?

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 Correct IncorrectNational Electrical Code (NEC) specifies 12 AWG copper wire for 20-amp circuits (typically jacketed in yellow Romex). 14 AWG is limited to 15-amp circuits.

What minimum American Wire Gauge (AWG) copper conductor is required for a standard 20-amp residential branch circuit?

• 14 AWG
• 12 AWG
• 10 AWG
• 16 AWG