This article was posted 05/25/2007 and is most likely outdated.

Article 408 Switchboards and Panelboards - 408.4
 

 
Subject - Article 408 Switchboards and Panelboards - 408.4

May 25, 2007
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Switchboards and Panelboards

408.4 Circuit Directory or Circuit Identification

Part I. General

This section on circuit identification was rewritten to improve safety by ensuring that workers don’t have to guess which breaker operates what circuit.

All circuits and circuit modifications must be legibly identified as to their clear, evident, and specific purpose. The identification must include sufficient detail to allow each circuit to be distinguished from all others, and the identification must be on a circuit directory located on the face or inside of the door of a panelboard. See 110.22. Figure 408-1


Figure 408-1
(Click on image to enlarge)

       
 

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Comments
  • This section and I have been at odds with each other for some time.

    Not that I mind identifying breakers; indeed, I really like the practice. I even have gone so far as to apply printed labels directly on the breakers - handy when the cover is off the panel!

    The trouble has come from that part of the code section that says the identification shall be in a 'directory' mounted on the cover. Some have insisted that an identification upon, or next to a breaker is not enough ... you MUST use that little white card.

    In the current code cycle, I made a proposal ... to change the wording to specifically allow my practice. The response of the code panel? "No need to - the code already allows for this."

    I suppose it comes down to that a 'directory' is. For those who wish to see the code panel's exact ruling, it is found in the 2008 ROP.

    Reno Steinke

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