EV Charger - Residential Load Calc

[ptrombley]

I have a Level 2 Electric vehicle charging circuit in my home. The load, at 125%, is 40A. With respect to NEC 220.82-- Can that load be included in the General Loads and thereby multiplied by 40% when determining the total service load? Or does it need to be included at 100%?

 

[texie]

I have a Level 2 Electric vehicle charging circuit in my home. The load, at 125%, is 40A. With respect to NEC 220.82-- Can that load be included in the General Loads and thereby multiplied by 40% when determining the total service load? Or does it need to be included at 100%?

I say no, as this would be considered an appliance and I don't see anything in art 625 that says otherwise. You get some some relief for four or more in 220.53. I would work it both ways with the standard and optional methods to see what is least. As an alternative, if this is being added to an existing service, you could use 220.83 and see what that gives you.

 

[suemarkp]

In 200.82 (the Optional Calculation), you only have 2 things: General Loads and Heating & Air-Conditioning Loads. A car charger is not HVAC, so the only place left is General Loads. Unless you're suggesting we get to throw it out because it doesn't fit the definition of appliance, motor, SABC, or floor space, I think it needs to go somewhere. Subpart (3), the fastened-in-place appliances section, seems the most appropriate. That will apply the 40% factor to this charger.