Panel Nomenclature

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PE (always learning)

Senior Member
Location
Saint Louis
Occupation
Professional Engineer
Hey All,

I know panel nomenclature is kind of dealer’s choice, such as PA, PB, or P1, P2, ect. , but if you have a panel nomenclature that’s worked well for you throughout the years, especially for big projects I’d like to know your standard naming schemes out of curiosity.
 
I've seen panels in the building I work in that include things like NE1 / NE2 / etc. I'm assuming SW1, E1, etc are somewhere around.
Another says 'Fed from panel GEN 1' (we have a generator in the back yard).
 
I have seen many versions. I can't name a favorite. Here are some simple concepts:
HP2-1
LP3-4
HL1-1

H is for high voltage (480/277)
L is for low voltage (208/120)
P is for power
L is for lighting
The third position gives you the floor level
The digit following the dash is sequential. In the above examples, HP2-1 is the first high voltage power panel on the second floor. The next one on the same floor would be HP2-2. Also, LP3-4 is the 4th low voltage panel on the 3rd floor.

Foe emergency panels, add an "E" at the beginning. For standby panels, add an "S" at the beginning.

I had one client that used longer panel names that included, among other things, the number of the column on which the panel is mounted. That was a very large building, and that justified using very descriptive panel names.
 
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