Switch Leg Identification

[don_resqcapt19]

Michael,

Don, where does it say that the identification has to be the same color on both the line & load side of the switch?

All ungrounded conductors of each voltage system must be identified as to sytem under the 2005 code. In Bob's example violet was used for the 208/120Y system and pink for the 480/277Y system. If you would use multiple colors to identify each system, then you could have a different color for the switch legs. You would have to post the method of system identification at each panel. You could also use the color to identify the system and some marking as you suggest in your last post to identify the switch legs.
Don

 

[infinity]

This is from another post but the question applies here.

(C) Ungrounded Conductors. Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit, where accessible, shall be identified by system. The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means and shall be permanently posted at each branch-circuit panelboard or similar branch-circuit distribution equipment.

Do the use of the words premise wiring system imply that the different voltages are installed within the same system, meaning raceway, box, etc.?
If a building had completely separate systems, say one for 277/480 and one for 208/120 would it be required to permanently post a sign a each panelboard?

If the two systems are completely separate am I required to identify anything beyond the grounded and grounding conductors?

 

[Minuteman]

Okay Don... now I see your point.

 

[don_resqcapt19]

Trevor,
Look at the Article 100 definition of premises wiring. Any time you have two or more voltage systems in the building the conductors of each system must be identifiable from those of each other system.
Don

 

[infinity]

Trevor,
Look at the Article 100 definition of premises wiring. Any time you have two or more voltage systems in the building the conductors of each system must be identifiable from those of each other system.
Don

Thanks Don,
I should have looked at Article 100 first. So by definition, two completely separate systems would still be one premises wiring system. I thought that there was an old post where it was stated that the requirement only applied if the two separate voltage systems were installed within the same raceway, box etc. Then again that might have been under a different code cycle if my old memory serves me correctly.