[BobBolt]

Romex either #8 or #6 depending on whats available to me by the foot.
Leaning to 40A w/ #8/3 as LoneR stated is good w/ OEM GM dual charger.
I found this https://www.amazon.com/Bryant-Elect...BhBtEiwAq5aX2BiFwR9w2c0bjl6ImlHxJqfgmzcnU3pcHsHuTlp53UcSv3CCo696rhoCLRMQAvD_BwE

Yup....it will operate the OEM EVSE just fine and you'll likely discover you have far more charging power than you ever need.
I've discovered that all I actually need is a dedicated 120V circuit and a L1 EVSE and over the course of a 7 day cycle I would be just fine.
The few times a month I have to work out of town means I'm stopping at a DCFC anyway and I still haven't burned through all the charging credits I got 2.5 years ago with the car.
You've got to have a pretty serious commute or be doing Uber or something to need super duper charging capability.
I charge two cars with two L2 EVSEs that share a single 40A circuit and have no issues....in fact it is still idle most of the time.

 

[jefro]

Check Grainger for Bryant. $32?

 

[jmcbrew]

That's the one I purchased to replace my HD Leviton. It's definitely a Bryant, with the clamps to secure the wires. I think the metals used may not be the same as the $50+ Bryant/Hubell units, and it may not be quite as deep as the more robust versions, but it's running cool. I'm happy with it.

Yes, it is the "regular duty" version. Not only are the contacts different, but the receptacle is made of a less robust material.

 

[JerryP]

As for the Bryant outlet they are 16.00 online, does that sound correct? Only 5.00 more than I paid for my Home Depot one.

That's the one I purchased to replace my HD Leviton. It's definitely a Bryant, with the clamps to secure the wires. I think the metals used may not be the same as the $50+ Bryant/Hubell units, and it may not be quite as deep as the more robust versions, but it's running cool. I'm happy with it.

That is the cheap residential version. Note the Phillips head screws and wire mangling terminals. It's also much less massive.

It's nothing like the recommended one.

You want the 9450FR: https://www.amazon.com/gp/product/B07R4LVX18/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Bob Paris]

The quality of the 240v outlet is not an issue since I live in Los Angeles and the local code requires a hard-wire installation. Fine with me - I would not be plugging and unplugging the charger's power cord anyway and I saved money not having to buy a receptacle. Win, win!

 

[jmcbrew]

The quality of the 240v outlet is not an issue since I live in Los Angeles and the local code requires a hard-wire installation. Fine with me - I would not be plugging and unplugging the charger's power cord anyway and I saved money not having to buy a receptacle. Win, win!

Hard wiring is generally the way to go whenever possible.

 

[dmscin]

Hi All, Got my 23 Bolt EUV from carvana last Fri. Liking it so far. I want to install a 240 outlet. I was going to put in a 50 amp breaker and use 8 gauge wire maybe 3' in length to go under the fuse box. Got this info from YouTube. Now I'm reading 6 gauge for 50 amp breaker. I'll be using the Chevy Dual portable charger not the charging station. Just want it to be safe. 6 gauge just seems so dang thick. Thanks Vince

Vince
Pretty sure you need 6ga wire for a 50a breaker

Dave

 

[ddegange]

Hi All, Got my 23 Bolt EUV from carvana last Fri. Liking it so far. I want to install a 240 outlet. I was going to put in a 50 amp breaker and use 8 gauge wire maybe 3' in length to go under the fuse box. Got this info from YouTube. Now I'm reading 6 gauge for 50 amp breaker. I'll be using the Chevy Dual portable charger not the charging station. Just want it to be safe. 6 gauge just seems so dang thick. Thanks Vince

I used 6 gauge.

 

[zawislakg]

Hi All, Got my 23 Bolt EUV from carvana last Fri. Liking it so far. I want to install a 240 outlet. I was going to put in a 50 amp breaker and use 8 gauge wire maybe 3' in length to go under the fuse box. Got this info from YouTube. Now I'm reading 6 gauge for 50 amp breaker. I'll be using the Chevy Dual portable charger not the charging station. Just want it to be safe. 6 gauge just seems so dang thick. Thanks Vince

Trust the 6-gauve. It can carry more amps a longer distance with no power loss. Have a sub panel installed in the garage and you can get your money's worth from a few more circuits. And look out for anyone who say they save money. Especially for the ground wire. My charger loves running at 9.8 kw

 

[BoltOutOfHell]

Hi All, Got my 23 Bolt EUV from carvana last Fri. Liking it so far. I want to install a 240 outlet. I was going to put in a 50 amp breaker and use 8 gauge wire maybe 3' in length to go under the fuse box. Got this info from YouTube. Now I'm reading 6 gauge for 50 amp breaker. I'll be using the Chevy Dual portable charger not the charging station. Just want it to be safe. 6 gauge just seems so dang thick. Thanks Vince

You need 6 gauge at a minimum, 6/3 Romex plus ground, and a 40 amp breaker for a max of 32 amp continuous load. Eight gauge Romex is good for 24 amp continuous, which will give you 18 mi/hr charge rate, vs 25 mi/hr for the 6 gauge. Good luck.

 

[BoltOutOfHell]

If you're using that with a 50 amp rated receptacle, that's an NEC violation. A 50 amp rated receptacle may only be on a circuit rated 50 amps or less.


Again, if the EVSE is connected via a receptacle, and you are under the 2020 NEC or later, then you need to use a GFCI breaker.

Cheers, Wayne

The GFCI's supposedly trip when trying to charge EV's, and thus the circuits.chargers are hard-wired to bypass that GFCI requirement. Cheers.

 

[jimmarako]

You need 6 gauge at a minimum, 6/3 Romex plus ground, and a 40 amp breaker for a max of 32 amp continuous load. Eight gauge Romex is good for 24 amp continuous, which will give you 18 mi/hr charge rate, vs 25 mi/hr for the 6 gauge. Good luck.

Not correct. 8 gauge romex is good for 40 amps, 32 continuous, while 6 gauge is is good for 55 amp or 44 amp continuous.

 

[BoltOutOfHell]

Not correct. 8 gauge romex is good for 40 amps, 32 continuous, while 6 gauge is is good for 55 amp or 44 amp continuous.

You're right, I looked back at my notes and you're exactly right. My bad. I think my concern in my situation was living in Phoenix and the high temperatures in our garage in summer (125F). But I'm using a water heater outlet with adapter, so I'm limited to 24 amp continuous (10 gauge). Thanks!

 

[mnl119]

Vince
Pretty sure you need 6ga wire for a 50a breaker

Dave

True for Romex/NM-B... for THHN in a conduit you can use the 90C ampacity and 8 gauge will suffice for a 50 amp circuit (40 amp continuous).

The annoying thing is we all know it's the same wire as THHN inside that Romex rubberized jacket.

Cerrowire Resources - Ampacity Charts

Ampacity is the maximum current that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. Cerrowire's ampacity chart helps calculate the load requirement for a circuit.

www.cerrowire.com

 

[MattADK]

Thanks, I'm using the OEM Chevy Dual charger. I just found out it runs on a 40 amp dedicated line.
So ..I think I'll use my 8/3 wire and a 40 amp breaker. 8 gauge is suitable for 40 amps and I have all the parts and I'm following GM's spec. Curious...what if I did use a 50 amp and 6/3 wire that wouldn't make any difference for charging rate or time just more protection on the circuit overheating...correct? Thanks

If you’re running an outlet for the OEM EVSE then a 40 amp circuit with 8/3 Romeo is absolutely fine, don’t pay attention to people that are telling you otherwise. I think you also mentioned it’s a short run; 3ft or so, to your panel. That makes it even easier to upgrade in the future If you ever decide to do that. For the vast majority of EV owners, 32 amps charging rate is more than sufficient.

It is true that you want a commercial grade outlet like Hubbell or something equivalent.

 

[Vza]

I wound up using 6/3 with the heavy duty Bryant and 50A breaker. BUT I'm confused ...the gauge wire and amperage of the breaker dosen't determine the charge amount? The OEM dual charger uses 32A with the 240V outlet ....its not going to go beyond that correct? That's if I use a different rated charger that charges at a higher rate. V

 

[mnl119]

I wound up using 6/3 with the heavy duty Bryant and 50A breaker. BUT I'm confused ...the gauge wire and amperage of the breaker dosen't determine the charge amount? The OEM dual charger uses 32A with the 240V outlet ....its not going to go beyond that correct? That's if I use a different rated charger that charges at a higher rate. V

Correct. The OEM charger will draw 32 amps max. Your circuit is capable of supporting 40 amps if you buy an aftermarket charger. You're car (Bolt) is capable of handling 32 amps max (2017-21) or 48 amps max (22-23).

 

[Vza]

Cool Thanks V

 

[jefro]

When close I say go big.

 

[GregBrew]

Trust the 6-gauve. It can carry more amps a longer distance with no power loss. Have a sub panel installed in the garage and you can get your money's worth from a few more circuits. And look out for anyone who say they save money. Especially for the ground wire. My charger loves running at 9.8 kw

The vast majority of EVSEs don't need the Neutral wire. They do need a Ground, though.

Regardless, run all four wires.