shortcircuit2
Senior Member
- Location
- South of Bawstin
Can we parallel 1 conductor of a feeder and not the others?
Example 1: 400 amp 3-phase feeder with 2 x 600mcm THWN copper and 1-set of parallel THWN 4/0 copper in same raceway for ungrounded phases with full size grounded conductor and correctly sized EGC per 250.122?
Example 2: 400 amp 3-phase feeder with 3 x 600mcm copper THWN ungrounded phase conductors and 1-200% neutral in parallel with correctly sized EGC per 250.122?
310.10(H) does not seem to prohibit paralleling 1 conductor?
Example 1: 400 amp 3-phase feeder with 2 x 600mcm THWN copper and 1-set of parallel THWN 4/0 copper in same raceway for ungrounded phases with full size grounded conductor and correctly sized EGC per 250.122?
Example 2: 400 amp 3-phase feeder with 3 x 600mcm copper THWN ungrounded phase conductors and 1-200% neutral in parallel with correctly sized EGC per 250.122?
310.10(H) does not seem to prohibit paralleling 1 conductor?