3 Tesla’s receptacles on one 60 amp 3 pole breaker?

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Millerlightning

Millerlightning

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Orange County California
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Electrical Contractor
Is it cool to feed three separate Tesla receptacles (NEMA 14-50) on one 3 pole 60 amp three phase breaker with 3 x #6’s utilizing phase to phase wiring method. IE #1 receptacle AB. #2 receptacle BC. #3 receptacle AC. It is a 208v system.
 
Similar question, look here:

NEC 2017 - 625.40

625.40 of the NEC 2017 states the following - Electric Vehicle Branch Circuit. Each outlet installed for the purpose of charging electric vehicles shall be supplied by an individual branch circuit. Each circuit shall have no other outlets. What is the definition of an Outlet w.r.t to EV...
forums.mikeholt.com
 
infinity said:
Similar question, look here:

NEC 2017 - 625.40

625.40 of the NEC 2017 states the following - Electric Vehicle Branch Circuit. Each outlet installed for the purpose of charging electric vehicles shall be supplied by an individual branch circuit. Each circuit shall have no other outlets. What is the definition of an Outlet w.r.t to EV...
forums.mikeholt.com
Click to expand...

That link is about a single phase circuit, while this one is 3 phase. Not comparable, IMO.

I think what the OP wants to do is fine.

It may be an inconvenience if one wishes to deenergize only one of the units.
 
retirede said:
That link is about a single phase circuit, while this one is 3 phase. Not comparable, IMO.

I think what the OP wants to do is fine.

It may be an inconvenience if one wishes to deenergize only one of the units.
Click to expand...
The code section posted in that thread makes no reference to single or three phase but does state that an individual branch circuit is required for each outlet and shall serve no other outlets. Are you saying that what is proposed by the OP is 3 individual branch circuits?
 
A 14-50 receptacle is not allowed on a 60 amp circuit. I agree that 625.40 requires one OCPD per outlet.

So for a #6 Cu 75C (65A) feeder 3-wire 3-phase feeder, you could install a small panel with (3) double pole 40A breakers, each supplying an EVSE set to a continuous current of no more than 30A. Since 30A * 1.25 * sqrt(3) = 65A.

Cheers, Wayne
 
wwhitney said:
A 14-50 receptacle is not allowed on a 60 amp circuit. I agree that 625.40 requires one OCPD per outlet.

So for a #6 Cu 75C (65A) feeder 3-wire 3-phase feeder, you could install a small panel with (3) double pole 40A breakers, each supplying an EVSE set to a continuous current of no more than 30A. Since 30A * 1.25 * sqrt(3) = 65A.

Cheers, Wayne
Click to expand...
Yeah if you went up to a 70A breaker which is okay on The wire, at least then you could get up to 30 amps continuous per outlet, but still seems low.
 
Had similar concern but for only 2, was considering using a back feed onto a small manual transfer switch, allowing only one to be used at any time feeding from only one circuit. Not sure if code or listing allows such back feed of the manual transfer switch.
 
infinity said:
The code section posted in that thread makes no reference to single or three phase but does state that an individual branch circuit is required for each outlet and shall serve no other outlets. Are you saying that what is proposed by the OP is 3 individual branch circuits?
Click to expand...

No - I stand corrected!
 
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