Using Wire Tables and Determining Conductor Sizes
Determine the ohms-per-mil foot of an aluminum conductor located in an area with a temperature of 104°F (40°C). Use the NEC to determine the ampacity of the following conductors.
Size | Material | Insulation | Ambient Temperature | Conductors in Raceway | Amps |
#10 AWG | Copper | RHW | 44°C | 3 |
|
350 kcmil | Copper | XHH | 128°F | 6 |
|
#2 AWG | Aluminum | TW | 86°F | 2 |
|
3/0 AWG | Aluminum | XHHW-2 | 38°C | 9 |
|
500 kcmil | Copper | THWN | 48°C | 6 |
|
#6 AWG | Copper | THW-2 | 150°F | 3 |
|
2/0 AWG | Aluminum | UF | 86°F | 12 |
|
750 kcmil | Aluminum | RHW-2 | 34°F | 6 |
|
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