How Many Amps Can a 12-Gauge Wire Hold?

By Staff WriterLast Updated Mar 26, 2020 7:39:42 PM ET

A 12-gauge wire can carry between 15 and 20 amps for normal electrical wires. When wiring chassis, 12-gauge wire can carry a maximum of 41 amps along the metal conductor. The conductive part of a 12-gauge wire is 0.0808 inch in diameter. This gauge is found in extension cords.