Wire Size and Amp Ratings
Copper
Aluminum
60°C (140°F)
75°C (167°F)
90°C (194°F)
75°C (167°F)
90°C (194°F)
Wire Guage Size
NM-B, UF-B
THW, THWN,
SE, USE, XHHW
THWN-2, THHN,
XHHW-2, USE-2
THW, THWN,
SE, USE, XHHW
XHHW-2, THHN,
THWN-2
14
15
15
15
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12
20
20...