How to Choose the Right-Sized Electrical Wire

SWG to Current (amperage) Chart - Transformer Wire Amperage Table | Electrical4u

26. The current-carrying capacity (ampacity) of aluminum wire, or the maximum overcurrent protection in the case of 14 AWG, 12 AWG, and 10 AWG conductors, is less than that of copper wire for a given size, Insulation, and temperature of 30°C. Refer to Table 310.16 and 240.4(D) and complete the following table. Important: Where the ampacity of the conductor does not match the rating of a standard fuse or circuit breaker as listed in Table 240.6(A), 240.4(B) permits the selection of the next ḧighe