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    buildingenginer's Avatar
    buildingenginer Posts: 2, Reputation: 1
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    #1

    Jan 8, 2009, 08:28 AM
    Power consumption
    I have a tenant asking what's the available watts per square foot of my building. They are looking for 6 to 7 watts per square foot. This is total available power. Does anyone know how to calculate this?
    Thanks
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Jan 8, 2009, 01:25 PM
    Well, 200 amps single phase at 240v is 48,000 watts. 100A @ 240v is 24,000 watts.

    For instance, if the space is 2000 sq/ft, and has a 100A 120/240v single phase service to it, that is 24,000 divided by 2000, which equals 12 watts per sq ft.
    buildingenginer's Avatar
    buildingenginer Posts: 2, Reputation: 1
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    #3

    Jan 9, 2009, 03:22 AM
    Quote Originally Posted by stanfortyman View Post
    Well, 200 amps single phase at 240v is 48,000 watts. 100A @ 240v is 24,000 watts.

    For instance, if the space is 2000 sq/ft, and has a 100A 120/240v single phase service to it, that is 24,000 divided by 2000, which equals 12 watts per sq ft.
    Thanks for the reaponse. I was using that formula but the panels are 3ph. Then using the factor 1.73 comes up the same answer.
    Thanks again
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