Table 1-Wire Selection Guide
Note 1. Based on ambient temperature of 30°C(86°F)
2. Rated 0 to 2000 volts; 65° C and 75°C
3. Not more than three conductors in raceway or cable
or earth (directly buried)
ALLOWABLE CURRENT FOR INSULATED COPPER CONDUCTORS
Temp Rating 65°C (104°F) 75°C(167°F)
Wire Type .TW .FEPW .THWE
.UF .RE .XHHW
.REW .USE
Wire Gauge(AWG) Allowable Current (Amps)
14 18 18
12 20 20
10 34 34
8 40 50
6 55 65
4 70 85
Ambient Temp °C(°F) Correction Factors
above
30 (86) to 35 (95) 0.91 0.94
above
35 (95) to 40 (104) 0.82 0.87
Note : For ambient temperature over 30° C, multiply the current
shown above by the appropriate correction factor to determine the
maximum-allowable load current.
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