Electrical load calculation

[Electriman]

Hello,

I was wondering when I do the load calculation for a house that has a pool and also EV charger, if I apply 40% to the pool and EV charger when I use optional method. The other way is to consider it 100% similar to HVAC equipment.

Thanks

 

[wwhitney]

Hello,

I was wondering when I do the load calculation for a house that has a pool and also EV charger, if I apply 40% to the pool and EV charger when I use optional method.

The text of the NEC allows that for the optional method.

The other way is to consider it 100% similar to HVAC equipment.

There is no requirement in the NEC to do that, although some jurisdictions may require it. I would say that if they haven't formally amended 220.81/220.82, they would be in error to require it.

For EVSEs, this may change in the 2026 NEC.

Cheers, Wayne