What Most Techs Get Wrong About Wire Sizing When a 10-gauge wire on a 50-amp breaker is OK. By ... Table 310.15(B)(16) in detail, but as an example, according to this NEC chart, a 6-gauge copper ...

The requirements for conductor construction and application are outlined in Sec. 310.4 [Conductor Construction and Application, Minimum Size and Material] of the NEC. Table 310.4 (1) provides ...

119,513 CM = 2/0 AWG, as per NEC Table 8, Chapter 9. It would only require a 1/0 copper wire to maintain a 3% voltage drop on this circuit. However, our minimum wire size so far is 2/0 per NEC ...