- Location
- New Jersey
- Occupation
- Journeyman Electrician
I didn't want to hijack this other tread {http://forums.mikeholt.com/showthread.php?t=171589} so I started a new discussion here regarding 300.20(A). In that thread a photo of a lighting contactor was posted and within the contactor there are circuits are being switched to control lighting. The neutrals associated with those circuits are not present in the lighting contactor so the question is does this violate 300.20(A) which states:
Also what in the code would specifically allow the use of a two wire switch loop without the neutral being run down to the switch with the ungrounded conductors? For example I have a 200' run of EMT for a SP switch, that raceway would typically have only two conductors, a hot leg and a switch leg.
300.20 Induced Currents in Ferrous Metal Enclosures
or Ferrous Metal Raceways.
(A) Conductors Grouped Together. Where conductors carrying alternating current are installed in ferrous metal enclosures or ferrous metal raceways, they shall be arranged so as to avoid heating the surrounding ferrous metal by induction. To accomplish this, all phase conductors and, where used, the grounded conductor and all equipment grounding conductors shall be grouped together.
Also what in the code would specifically allow the use of a two wire switch loop without the neutral being run down to the switch with the ungrounded conductors? For example I have a 200' run of EMT for a SP switch, that raceway would typically have only two conductors, a hot leg and a switch leg.