Load Calculations

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mannyb

Senior Member
Location
Florida
Occupation
Electrician
If I have 4 separate buildings being served by one service. Wuuld I treat each space individually by sqft or combine all the lighting, receptacles, motors, A/Cs etc all the buildings to determine load?
 

charlie b

Moderator
Staff member
Location
Lockport, IL
Occupation
Retired Electrical Engineer
My answers are yes and yes, in that order.

When calculating the load for each building, you treat it as though the others did not exist. When calculating the service that powers all four buildings, you treat them as one large building. With the available demand factors, what this accomplishes is giving you a total service load that is lower than the sum of the four building loads.
 
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