In a circuit panel, every circuit must be identified as to its specific purpose or use [as per Sec. 408.4(A) of the National Electrical Code]. This identification must be made:
- In a circuit directory that is located on the face or inside of the panel door (panel boards).
- At each switch or circuit breaker (switchboards or switchgear).
Often, compliance with this rule fails to embrace the rationale behind it. Instead of a type-written, accurate, clear circuit name, what do some installers leave? Some examples include:
- Handwritten (in smudged pencil) illegible scrawl.
- For the sake of space, one or more mysterious abbreviations.
- Vague description because the electrician was too tired after ten hours of pulling wire to whip out a brilliantly composed description on the spot.
- Handwritten ink on top of poorly applied correction fluid, denoting a change from the original.
- Stick-on tags that don’t stay put after some time in service
These problems exist because of the “afterthought” attitude toward this Code rule. The solution is to plan this identification from the drawings. Labels made using the correct methods and materials should be provided to the electricians to affix where needed.