6/3 with ground, how to connect to wall charger

[slides10]

My electrician installed a 6/3 with ground. Is it possible to still connect to the wall connect, but not install the ground? What options do I have here?

 

[howardnj]

My electrician installed a 6/3 with ground. Is it possible to still connect to the wall connect, but not install the ground? What options do I have here?

The wall connector requires a ground

https://www.tesla.com/sites/default/files/support/charging/Gen3_WallConnector_Installation_Manual.pdf

 

[jcanoe]

Your should cap the neutral wire (normally this is the white wire) as it is not used. To install the Tesla Gen3 Wall Connector you need two hot 120V leads and the ground wire.

 

[Sophias_dad]

And set it to no more than a 50 amp breaker/40 amp charging. The electrician should have put in a 50 amp breaker.

 

[terranx]

And set it to no more than a 50 amp breaker/40 amp charging. The electrician should have put in a 50 amp breaker.

Well since he didn't specify he could theoretically have 6/3 MC cable rather than Romex, which would be okay for 60A/48A.

 

[Sophias_dad]

Well since he didn't specify he could theoretically have 6/3 MC cable rather than Romex, which would be okay for 60A/48A.

Sure.

 

[slides10]

60Amp breaker -

So cap the natural and install the bare copper?

 

[ChrisMPK]

Correct, use the bare wire as ground and cap the neutral. Wait for a few people here to tell you the sky is falling if you use a 60A breaker, but I personally wouldn't worry about it.

 

[jcanoe]

60Amp breaker -

So cap the natural and install the bare copper?

Correct. Check the wire (post a photo). If the #6 gauge wire is the typical Romex type non-metallic B (NM-B) commonly used for indoor home wiring then it is not rated for more than 55A, must have a 50A breaker. If the #6 gauge wire is armored or in conduit the wire can be probably be used with a 60A circuit, 60A circuit breaker.

 

[Sophias_dad]

Correct, use the bare wire as ground and cap the neutral. Wait for a few people here to tell you the sky is falling if you use a 60A breaker, but I personally wouldn't worry about it.

The sky is not falling, but its yet another indication of a crappy 'professional' doing the job. If I'm gonna pay a professional to do a job, I expect it done correctly and so my homeowners or life insurance doesn't have to come sue his ass out of existence when my house burns down while I'm sleeping in it. I'd also prefer not to have my house burn down, whether or not I'm sleeping in it.

All that said, the NEC is >extremely< conservative, so pushing that cable rated to 55 amps as if it were rated to 60 amps is unlikely to be a big deal. It becomes a bigger deal when the wire runs through a hot attic, or is crammed through a hole with a bunch of other highly loaded cables.