Branch Circuits & FeedersPregunta 2 de 120
For that same 24-ampere continuous load, what is the minimum size copper branch-circuit conductor, assuming 75 degrees C terminations and THWN insulation?
a.12 AWG
b.10 AWG
c.8 AWG
d.14 AWG
Explicación
The conductor must carry at least 125 percent of the continuous load, or 30 A. In the 75 degrees C column of Table 310.16, 12 AWG copper is only 25 A, so it fails; 10 AWG copper is 35 A and is adequate, and 240.4(D) still allows a 30 A device on 10 AWG. Choosing 8 AWG is oversized for the minimum asked, and 14 AWG is limited to 15 A.
Referencia Legal: 2023 NEC §210.19(A)Practica las 120 preguntas gratis — sin registro.
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