15
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.
