20 Amp Circuit Wire Size. For 50 amps the rule of thumb is that you need a 6 gauge wire size. The corresponding size for 60 amp is a wire gauge size 4 however there are certain important assumptions that that rule of thumb relies on we will expand on those in the rest of this article.
For 50 amps the rule of thumb is that you need a 6 gauge wire size. Building codes based on the national electrical code prohibit the use of 14 gauge wire anywhere on a 20 amp circuit. The corresponding size for 60 amp is a wire gauge size 4 however there are certain important assumptions that that rule of thumb relies on we will expand on those in the rest of this article.
Building codes based on the national electrical code prohibit the use of 14 gauge wire anywhere on a 20 amp circuit.
For 50 amps the rule of thumb is that you need a 6 gauge wire size. Building codes based on the national electrical code prohibit the use of 14 gauge wire anywhere on a 20 amp circuit. All wiring in such circuits must be 12 gauge or larger. For example plugging a heater rated for 20 amps into a 15 amp circuit wired with 14 gauge.
