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Service calculation #166100
07/12/07 07:49 PM
07/12/07 07:49 PM
jem  Offline OP
New Member
Joined: Apr 2007
Posts: 8
Single family home with mother-in-law apartment, 200 amp service, all electric except for gas heat. Customer wants to install a 50 amp hot tub. Using 220.83(A) to determine if service is of sufficient capacity since no HVAC is being added. Should the existing HVAC load and new hot tub load be added to 220.83(A)(1)through(A)(4)before taking first 8kVA of load at 100% and the remainder at 40%.

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Re: Service calculation [Re: jem] #166140
07/13/07 10:25 PM
07/13/07 10:25 PM
HotLine1  Offline

Joined: Apr 2002
Posts: 6,936
Brick, NJ USA
My read is to do the calcs on the EXISTING items, then add the hot tub.

One may also consider installing an amp recorder to 'see' the real world numbers to have actual (real) load.


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