by MikeD (Posted Tue, 04 Jun 2013 06:43:20 GMT)
wwhitney: I saw this new article in a draft copy of the 2014 NEC:
"210.17 Electric Vehicle Branch Circuit. Outlet(s) installed for the purpose of charging electric vehicles shall be supplied by a separate branch circuit. This circuit shall have no other outlets."
Relevant NEC definitions:
"Outlet. A point on the wiring system at which current is taken to supply utilization equipment." [i.e. not all outlets are receptacles]
"Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment."
This article is not clear in its intent, IMO. They did not use the specially defined "individual branch circuit" term. So it seems to say that if you install a new outlet (receptacle or direct wire) for a EVSE, it has to be either on an "individual branch circuit" or on a multi-outlet branch circuit in which all of the outlets are for the purpose of charging electric vehicles. However, I'm not aware of receptacles designed solely for EVSEs (usually they use either NEMA 5-15r or 6-50r), so I don't know how you could enforce a receptacle to be used only for an EVSE, although one could put a warning label on the receptacle ("FOR EVSE USE ONLY").
There may be other articles which restrict (and also clarify) this one.
Do you have any further insights on this article?
wwhitney: I saw this new article in a draft copy of the 2014 NEC:
"210.17 Electric Vehicle Branch Circuit. Outlet(s) installed for the purpose of charging electric vehicles shall be supplied by a separate branch circuit. This circuit shall have no other outlets."
Relevant NEC definitions:
"Outlet. A point on the wiring system at which current is taken to supply utilization equipment." [i.e. not all outlets are receptacles]
"Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment."
This article is not clear in its intent, IMO. They did not use the specially defined "individual branch circuit" term. So it seems to say that if you install a new outlet (receptacle or direct wire) for a EVSE, it has to be either on an "individual branch circuit" or on a multi-outlet branch circuit in which all of the outlets are for the purpose of charging electric vehicles. However, I'm not aware of receptacles designed solely for EVSEs (usually they use either NEMA 5-15r or 6-50r), so I don't know how you could enforce a receptacle to be used only for an EVSE, although one could put a warning label on the receptacle ("FOR EVSE USE ONLY").
There may be other articles which restrict (and also clarify) this one.
Do you have any further insights on this article?