service calcs for commercial building

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Strange as it is their is no NEC watt p/foot for general office buildings. Maybe someone here can help explain why?
 
DHkorn said:
Strange as it is their is no NEC watt p/foot for general office buildings. Maybe someone here can help explain why?
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Wrong: Office buildings . . . 3-1⁄2 va/sq.ft.
 
LarryFine said:
Wrong: Office buildings . . . 3-1⁄2 va/sq.ft.
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3-1/2 va/sq foot + 1 va/sq foot for receptacles + all other equipment + fudge factor + growth.

I'm sure others can add to this list:)
 
I've always questioned 1va/sq.ft. for office receptacles. That comes out to be less than 1 receptacle for a 100 square foot office. I usually put one on each wall, or about 360va after diversity.

It might match utility demand values, but I find it short when I start counting actual receptacles in an office building.

Jim T
 
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