Advise me about wiring with my hardwire install

[nmope]

I hardwired my Emporia 48A level 2 charger with a 60A breaker...it charged my vehicle at 11.3kW at 48A so it seems to be working correctly for 2 charging sessions so far.
I removed the cover from the box and it looks like my electrician did not use the correct wiring, see below. Thoughts?

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[generaltso]

What is it that you think is incorrect? Why did he have to put a junction box in line instead of running the wire directly to the EVSE?

 

[ebeponyan]

I'm not a licensed electrician and neither are you, but your licensed electrician is. That said, *most* hardwired EVSEs do not have a dedicated ground, so what you're seeing here (EDIT to remove confusion) should be fine.

 

[ddr24]

I hardwired my Emporia 48A level 2 charger with a 60A breaker...it charged my vehicle at 11.3kW at 48A so it seems to be working correctly for 2 charging sessions so far.
I removed the cover from the box and it looks like my electrician did not use the correct wiring, see below. Thoughts?

I don't know anything about the Emporia, but I assume you can change the amps it charges at...cuz I thought MMEs maxed out at 40amp.

 

[generaltso]

I'm not a licensed electrician and neither are you, but your licensed electrician is. That said, *most* hardwired EVSEs do not have a dedicated ground, so what you're seeing here (neutral to neutral, ground to junction box) is sound.

They do have a ground. They don't have a neutral. But if it's going to a main panel, ground and neutral are connected anyway.

 

[HuntingPudel]

Looks like he just used white for earth ground instead of green. Not really an issue. If you want to be sure about that white wire being used for ground, pull the faceplate off of your breaker box and find where the big white wire is attached. I will guess that it terminates on the ground bar in the box. ??

 

[generaltso]

I thought MMEs maxed out at 40amp.

The MME maxes out at 48A.

 

[jpinFLX]

I am not an electrician. But to me, this looks like an electrician wiring it like an appliance. The appliance companies lobbied hard not to require a dedicated ground because that made upgrades that much harder. As long as the unit is self doesn't ground out to the body it should be fine, but it looks to me like this metal box is not grounded, as that ground wire is not connected to anything.

 

[nmope]

I’m sorry I should have clarified. He used a 6 gauge 3 wire with ground instead of the 6 gauge copper. I think the wiring that he used only maxes out at 55A so technically not code where the copper version is 65A. Not an electrician but reading on these forums…

 

[generaltso]

I’m sorry I should have clarified. He used a 6 gauge 3 wire with ground instead of the 6 gauge copper. I think the wiring that he used only maxes out at 55A so technically not code where the copper version is 65A. Not an electrician but reading on these forums…

I'm assuming it's all copper.

 

[Mach-Lee]

I hardwired my Emporia 48A level 2 charger with a 60A breaker...it charged my vehicle at 11.3kW at 48A so it seems to be working correctly for 2 charging sessions so far.
I removed the cover from the box and it looks like my electrician did not use the correct wiring, see below. Thoughts?

That does not look correct to me. Looks like he cut off the plug and wired to the existing cord? That's not the proper way, if he's hardwiring it the cord should be removed and the wires from the panel run straight into the EVSE and connected inside.

The issue is the cord uses high-strand wires, and he's mating those to low strand wires with a wire nut. I don't think wire nuts are an approved connection method for that type of connection.

Personally I think anyone using wire nuts on 6 gauge or larger wires is a hack job. If those wire nuts overheat and melt you will have a dead short to that metal box. I would ask that he redo it properly so the conduit goes all the way to the EVSE, I would not accept that work as-is. He obviously didn't read the installation instructions.

 

[nmope]

That does not look correct to me. Looks like he cut off the plug and wired to the existing cord? That's not the proper way, if he's hardwiring it the cord should be removed and the wires from the panel run straight into the EVSE and connected inside.

The issue is the cord uses high-strand wires, and he's mating those to low strand wires with a wire nut. I don't think wire nuts are an approved connection method for that type of connection.

Personally I think anyone using wire nuts on 6 gauge or larger wires is a hack job. If those wire nuts overheat and melt you will have a dead short to that metal box. I would ask that he redo it properly so the conduit goes all the way to the EVSE, I would not accept that work as-is. He obviously didn't read the installation instructions.

That does not look correct to me. Looks like he cut off the plug and wired to the existing cord? That's not the proper way, if he's hardwiring it the cord should be removed and the wires from the panel run straight into the EVSE and connected inside.

The issue is the cord uses high-strand wires, and he's mating those to low strand wires with a wire nut. I don't think wire nuts are an approved connection method for that type of connection.

Personally I think anyone using wire nuts on 6 gauge or larger wires is a hack job. If those wire nuts overheat and melt you will have a dead short to that metal box. I would ask that he redo it properly so the conduit goes all the way to the EVSE, I would not accept that work as-is. He obviously didn't read the installation instructions.

What is a dead short? I reread the instructions and what you say makes sense.

Any links for 90C 6awg copper wire?
is this one correct?
SIMpull 250-ft 6-AWG Stranded Black Copper THHN Wire By-the-foot https://www.lowes.com/pd/Southwire-SIMpull-6-AWG-Stranded-Black-Copper-THHN-Wire-By-the-Foot/3129547

It’s about a 6 ft run to my breaker from the EV so I would need like 18 feet?

 

[generaltso]

This makes no sense. Why didn’t he run the conduit all the way to the EVSE? When he comes back to fix it, you should also ask him to reimburse you for the Emporia cord that he ruined.

 

[dtbaker61]

That does not look correct to me. Looks like he cut off the plug and wired to the existing cord? That's not the proper way, if he's hardwiring it the cord should be removed and the wires from the panel run straight into the EVSE and connected inside.

The issue is the cord uses high-strand wires, and he's mating those to low strand wires with a wire nut. I don't think wire nuts are an approved connection method for that type of connection.

Personally I think anyone using wire nuts on 6 gauge or larger wires is a hack job. If those wire nuts overheat and melt you will have a dead short to that metal box. I would ask that he redo it properly so the conduit goes all the way to the EVSE, I would not accept that work as-is. He obviously didn't read the installation instructions.

I'm not a fan of wire-nuts for 6ga wire.... much better to use something like:
https://www.amazon.com/Morris-97113...F/ref=d_pd_day0_sccl_3_2/137-3075184-8366349?

 

[21st Century Pony]

I think the breaker should be a 50 amp breaker.

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