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Thread: Demand Load for Apartments

  1. #1
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    Demand Load for Apartments

    The apartment is about 900 Square Feet and everything is Electric (Stove/Range, Electric Hot Water, HVAC System)
    Service is 120/240V/1 Phase

    Equipment AMP Load
    Range 40- 2 Pole 6,000 VA
    Electric Hot Water 30- 2 Pole 4,500 VA
    HVAC: CU-1 30- 2 Pole 4,500 VA
    HVAC: AHU-1 20- 2 Pole 3,000 VA
    HVAC: Electric Heat Pump 60- 2 Pole 10,000 VA
    2 Kitchen Outlet 20 (2x) 3,000 VA
    Fridge 20 1,500 VA
    Dishwasher 20 1,500 VA
    Hood/Microwave 20 1500 VA
    Bathroom: Lights/Recep/Fan 20 1,000 VA
    Receptacle 20 (2x) 3,000 VA
    Total 39,500 VA

    If I convert it to AMP, I get about 165 AMP.

    What type of demand factor do you guys use for a single apartment to reduce the load?

  2. #2
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    Quote Originally Posted by BatmanisWatching1987 View Post
    What type of demand factor do you guys use for a single apartment to reduce the load?
    Use either the demand factors in 220.40 or the demand factors in 220.82.

    Though I'm curious how you got 6000va for the range.

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    Quote Originally Posted by david luchini View Post
    Use either the demand factors in 220.40 or the demand factors in 220.82.

    Though I'm curious how you got 6000va for the range.
    I usually see it at 8kva. But I reduced it down to 6kVA with about a 80% demand factor.

  4. #4
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    Quote Originally Posted by BatmanisWatching1987 View Post
    I usually see it at 8kva. But I reduced it down to 6kVA with about a 80% demand factor.
    If the range is not over 12 kW, you are allowed to put 8 kW as the demand (Column C). Other ratings below, you use what's specified demand factor in Table 220.55. What really is the range load?

  5. #5
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    17.5 KVA to heat a 900 sqft apartment? Must be in Antarctica......
    Curt Swartz
    Electrical Contractor

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