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Thread: connected load vs. demand load

  1. #1
    Join Date
    Apr 2008
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    6

    connected load vs. demand load

    What is the difference between connected load kva and demand load kva on 277/480 3 phase panel 400 amp?

  2. #2
    Join Date
    May 2005
    Location
    Richmond, Virginia
    Posts
    21,838
    Quote Originally Posted by KAEnoch
    What is the difference between connected load kva and demand load kva on 277/480 3 phase panel 400 amp?
    Demand load permits demand-factor reductions, and excludes the lesser of items when only one can be on at a time, such as heating and cooling. Connected load is exactly what it implies.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  3. #3
    Join Date
    Feb 2003
    Location
    Alabama
    Posts
    2,621
    Quote Originally Posted by KAEnoch
    What is the difference between connected load kva and demand load kva on 277/480 3 phase panel 400 amp?
    Connected Load is the total load you have connected to the 400 amp panel.
    As you probably know, all of that load is not on at the same time. The max demand load is the maximum load that is on during a predetermined period of time. If you live in a hot summer time region, the the peak load may be from
    9am to 8pm when the A/C is running all of the time.

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