Anyone use this Romex 6/3 cable during install?

[davewill]

It isn’t only that. It you did use a 55A breaker, then you’d also have to set your EVSE to 44A charge rate, and most EVSEs don’t have that setting. It is either 48A or 40A charge rate to pair with the 60A and 50A breakers that are in use.

But yeah, 40A charge rate is FINE.

Actually the breaker ISN'T the problem. It would meet code to use a 60a breaker and set the EVSE to 44a charging...but you can't.

 

[Cosmacelf]

Actually the breaker ISN'T the problem. It would meet code to use a 60a breaker and set the EVSE to 44a charging...but you can't.

When did I say the breaker was the problem? honestly, you’ve now even more confused an already hopelessly confused and tangled thread.

Did you mean to reply to someone else?

Oh screw it, I’ll make it worse too: Even if you could set your EVSE to 44A, a 60A breaker would still not be compliant because the wire is not rated for 60A, correct?

 

[Mrbrock]

When did I say the breaker was the problem? honestly, you’ve now even more confused an already hopelessly confused and tangled thread.

Did you mean to reply to someone else?

Oh screw it, I’ll make it worse too: Even if you could set your EVSE to 44A, a 60A breaker would still not be compliant because the wire is not rated for 60A, correct?

I believe you are allowed to use a larger breaker if the the breaker you need doesnt exist as long as nothing on the circuit is rated higher than the wire rating. So setting an EVSE to 44A on 55A rated wire with a 60A breaker is to code but using the same equipment and wire with a 50A breaker would not meet code because the draw would be rated higher than the breaker. Not an electrician but this is my basic understanding.

 

[davewill]

When did I say the breaker was the problem? honestly, you’ve now even more confused an already hopelessly confused and tangled thread.

Did you mean to reply to someone else?

Oh screw it, I’ll make it worse too: Even if you could set your EVSE to 44A, a 60A breaker would still not be compliant because the wire is not rated for 60A, correct?

I was just continuing the conversation, not criticizing your reply.

The 60a breaker is allowed. That's why people make the mistake of using 60a breakers and Romex for 48a EV charging in the first place.

 

[EVer Hopeful]

Did I ever mentioning downgrading the charging rate ... because you go to sleep all night anyway?

 

[man02195]

Hey guys, new question. I returned my 50' of 6/3 wire and bought 42' of 4/3 wire at Lowes, so i'd be compliant. Quite a bit tougher to route thru the crawlspace, but it's in and I'm ready to wired the tesla wall thingy. Which wire do i use as the ground, the white or the bare copper in the tesla thingy?

 

[Cosmacelf]

Hey guys, new question. I returned my 50' of 6/3 wire and bought 42' of 4/3 wire at Lowes, so i'd be compliant. Quite a bit tougher to route thru the crawlspace, but it's in and I'm ready to wired the tesla wall thingy. Which wire do i use as the ground, the white or the bare copper in the tesla thingy?

You only needed 4/2 for the Tesla Wall connector. Ignore the white, use the bare copper for the ground.

 

[agmonaco]

I used 6/3 romex with ground to Nema 14-50 industrial outlet from 50 amp breaker. Charges at 32 amps/ 30 MPH. Installed it myself. Had help from electrician friends that guided me. Works perfect. I would not do it any other way with a 220V system. The 14-50 is suppose to be wired that way. And it is about as cheap as you want to go. Don't cut corners.

 

[brkaus]

Hey guys, new question. I returned my 50' of 6/3 wire and bought 42' of 4/3 wire at Lowes, so i'd be compliant. Quite a bit tougher to route thru the crawlspace, but it's in and I'm ready to wired the tesla wall thingy. Which wire do i use as the ground, the white or the bare copper in the tesla thingy?

You can ignore the white. Cap it at each end. You could get away with 4/2 but it’s impossible to find. You can use 6/2 MC, but that’s not always easy to find locally either.

 

[man02195]

You can ignore the white. Cap it at each end. You could get away with 4/2 but it’s impossible to find. You can use 6/2 MC, but that’s not always easy to find locally either.

Thx, 4/3 was easy to find, and once you get it unrolled it's not too tough to deal with. I have a 100A sub-panel, and was going to go with qty (2) 45s to feed into the top from the crawl space (i have ¼ basement where the coal shoot used to be). Would you use 1" or 1-¼" PVC conduit to feed into the top (there's already a 2" for the main and 1-¼" for a bunch of old circuits they pulled off the old fuses years ago). And BTW, i really appreciate all youts that know this stuff, i'm from an engineering background so i can do it, just need the smarts to know what's code and not code. And there are so so many 6/3 installations out there, glad i switched to the 4/3 and 60A breaker.

 

[TBrownTX]

You only needed 4/2 for the Tesla Wall connector. Ignore the white, use the bare copper for the ground.

While can be used if you ever change it ou

Thx, 4/3 was easy to find, and once you get it unrolled it's not too tough to deal with. I have a 100A sub-panel, and was going to go with qty (2) 45s to feed into the top from the crawl space (i have ¼ basement where the coal shoot used to be). Would you use 1" or 1-¼" PVC conduit to feed into the top (there's already a 2" for the main and 1-¼" for a bunch of old circuits they pulled off the old fuses years ago). And BTW, i really appreciate all youts that know this stuff, i'm from an engineering background so i can do it, just need the smarts to know what's code and not code. And there are so so many 6/3 installations out there, glad i switched to the 4/3 and 60A breaker.

Been rocking 4/3 for over two years and appreciate the peace of mind, I'm sure you will too.

 

[MY-Y]

I also have 4/3 on my HPWC and Hubbell 14-50 outlet. Even though the outlet is rated for 4 gauge wire, it's a very tight fit; expect a bit of a struggle to get the 4 gauge wire in holes.

 

[Rocky_H]

You only needed 4/2 for the Tesla Wall connector.

It's just a strange quirk in the electrical industry that that doesn't seem to exist. Once it gets up to 4 gauge, no one makes the cable with only two hot conductors and ground, so 4/3 is what people have to get or some other kind of wire.

 

[Midnightsun]

Only in Canada? Romex 4/2

 

[Rocky_H]

Only in Canada? Romex 4/2

NMD90 is a different kind of cable that seems to be uniquely Canadian and has different amp ratings from the Canadian electric code.

 

[Midnightsun]

NMD90 is a different kind of cable that seems to be uniquely Canadian and has different amp ratings from the Canadian electric code.

It's Romex, made by Southwire in the USA. Only difference is better insulation of the wires hence the greater ampacity compared to NM-B. An amp is an amp and a wire AWG is no different in Canada than the US.

 

[Rocky_H]

It's Romex, made by Southwire in the USA. Only difference is better insulation of the wires hence the greater ampacity compared to NM-B. An amp is an amp and a wire AWG is no different in Canada than the US.

That is what I just said.

 

[EVer Hopeful]

The same they maybe, but you'd think they'd at least call them CWG

 

[man02195]

It's just a strange quirk in the electrical industry that that doesn't seem to exist. Once it gets up to 4 gauge, no one makes the cable with only two hot conductors and ground, so 4/3 is what people have to get or some other kind of wire.

What about using 6-6-8 Gray Stranded CU SEU Cable? I already have the 4/3, but found 2 conductor CU SE cable with 65A rating.

 

[brkaus]

My electrician made us use SEU for my swim spa sub-panel because it had to be sleeved outdoor to get into the attic from my main panel and again back to the sub. Romex isn’t allowed in wet locations.

I know nothing about the amp ratings though.