Planning the electrical installation
64
Typical power cable sizes (US)
Cable sizing is based on NEC Table 310-16 for copper wires, 75 °C (167 °F) wire
insulation at 40 °C (104 °F) ambient temperature. Not more than three current-
carrying conductors in raceway or cable or earth (directly buried). For other
conditions, dimension the cables according to local safety regulations, appropriate
input voltage and the load current of the drive.
Copper cables with concentric copper shield
Max. load
current
A
Cable type
AWG/kcmil
273 350 MCM or 2 × 2/0
295 400 MCM or 2 × 2/0
334 500 MCM or 2 × 3/0
370 600 MCM or 2 × 4/0 or 3 × 1/0
405 700 MCM or 2 × 4/0 or 3 × 2/0
449 2 × 250 MCM or 3 × 2/0
502 2 × 300 MCM or 3 × 3/0
546 2 × 350 MCM or 3 × 4/0
590 2 × 400 MCM or 3 × 4/0
669 2 × 500 MCM or 3 × 250 MCM
739 2 × 600 MCM or 3 × 300 MCM
810 2 × 700 MCM or 3 × 350 MCM
884 3 × 400 MCM or 4 × 250 MCM
1003 3 × 500 MCM or 4 × 300 MCM
1109 3 × 600 MCM or 4 × 400 MCM
1214 3 × 700 MCM or 4 × 500 MCM
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