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#128244 - 12/05/02 12:19 PM LOAD CALCULATION HELP  
SKETAR  Offline
Junior Member
Joined: Dec 2002
Posts: 2
BOCA RATON,FLORIDA,U.S.A.
I ADDED POOL HEATERS TO A ELECTRICAL PANEL OF A CLUBHOUSE AND THE INSPECTOR WANTS TO KNOW THE LOAD CALCULATION FOR THE EXISTING PANEL I CANT REMEMBER HOW TO CALCULATE THE EXISTING LOAD PLUS WHAT I ADDED ON CAN ANYONE PLEASE HELP.


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#128245 - 12/05/02 01:31 PM Re: LOAD CALCULATION HELP  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Add up the labeled currents or voltampere rating of all existing loads that can operate simultaneously. Determine the current or voltamperes available at the existing panel and its feeder circuit.

In a simplified sense, additional load must be sized to not exceed that feeder rating--or 80% or the feeder rating for continuous duty.


#128246 - 12/12/02 09:43 AM Re: LOAD CALCULATION HELP  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
See 220.35 for existing loads. If you have to, you might get some relief from it.


#128247 - 01/03/03 09:15 AM Re: LOAD CALCULATION HELP  
The Watt Doctor  Offline
Member
Joined: Dec 2001
Posts: 435
Mont Belvieu, TX
As Redsy implied, get on the phone to the PoCo, and find out what the peak demand was for the last year. I'm sure that it will meet the requirements of 220.35.

Good Luck,
Doc


The Watt Doctor
Altura Cogen
Channelview, TX


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