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Top 50 NEC Rules

Oct. 26, 2007 Mike Holt | Electrical Construction and Maintenance

Discuss this Article 2

Anonymous (not verified)
on Jun 8, 2012

Check two paragraphs on neutral conductors:
"The neutral conductor of a 3-wire single-phase 120/240V system, or 4-wire 3-phase 120/208V or 277/408V wye-connected system isn’t considered a current-carrying conductor.

The neutral conductor of a 3-wire circuit from a 4-wire 3-phase 120/208V or 277V/480V wye-connected system is considered a current-carrying conductor."

They contradict each other

Anonymous (not verified)
on Nov 2, 2012

Read again... The second is a 3 wire circuit from a 4 wire system. Not the same as a three wire system...

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