load calculator
- Thread starter jes25
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- Lockport, IL
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- Semi-Retired Electrical Engineer
Re: load calculator
To that I will add that 220-10 (1999 version) says that the computed load of a service shall not be less than the sum of the loads on the branch circuits. Note that 680-41(h) talks about the ampacity of the conductors, but does not change the amount you must use for the load itself. Since the spa is not explicitly described in a separate article within 220, you count the nameplate value as being its load. Since the spa?s heating element will not likely be energized for a continuous 3 hour period, then I agree with jschultz?s conclusion.
To that I will add that 220-10 (1999 version) says that the computed load of a service shall not be less than the sum of the loads on the branch circuits. Note that 680-41(h) talks about the ampacity of the conductors, but does not change the amount you must use for the load itself. Since the spa is not explicitly described in a separate article within 220, you count the nameplate value as being its load. Since the spa?s heating element will not likely be energized for a continuous 3 hour period, then I agree with jschultz?s conclusion.
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