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G0B02
According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
Pick an answer to check it.
Answer: C. AWG number 12
The National Electrical Code requires at least AWG 12 wire for a 20-ampere circuit. Smaller gauge numbers mean thicker wire, and AWG 14 is only good for 15 amps.
Tip: 20 amps needs AWG 12.