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I am getting 48/48A when charging. Should I do anything ?
Heh, yeah, I don't usually get on the forum on the weekends, so I'm just now seeing this. Yes, that's the "round up" provision, but @iluvmacs covered that. You would still have to treat it as a 55A (or less) circuit.I suspect Rocky_H will weigh in soon. He mentioned some fairly obscure part of the NEC that allowed a 60A breaker when a 55 isn't available.
Not what you paid for
This is the next thing I would use to address it. I'm a little bit unclear from your wording. Does the invoice state that it is to be a 60A circuit? If so, you did not get what you paid for. What you got is a code violation, and with that wire, you can only use it as a 50A circuit. So I would call the electrician back and offer him two choices to fix it or be reported to the inspector:I have 60A and the invoice from the electrician says 6-3.
I've always seen Al in grey, and never as small as 6 gauge (1970s excluded).
The white sheath is a little bit odd. NM-B is usually black colored for these thicker wires, but maybe white is somewhat normal too. I just don't think this could be aluminum. If you look at ampacity tables, the column for NM-B cable type is under the group of copper wiring types, like so:Aluminum wire is not generally available in sizes thinner than 8 AWG. In most areas it is common to use it only on 4 AWG and thicker, primarily because the extra cost for AL devices negates the extra cost of CU wire. Here, where it appears that corners might have been cut and the sheath is not the standard black color, it is worth checking that it's not actually 6/3 aluminum.
Yes, this is true.So I spoke with the electrician. He looked into it and said it is 6-3 and rated for 55 amps.
Um, yeesh. Technically true, but it doesn't mean what he thinks it does. This is the thing that @iluvmacs covered. This guy is supposedly an inspector, damn it! He should know how this works! Using the "next size up" provision would say that since there isn't a 55A breaker size, you could use a 60A. But that DOES NOT auto-magically, hand-wavingly transform it into a genuine 60A rated circuit!! It's not. It's still limited by the wire size as a 55A maximum circuit. In all respects, in all calculations, it must not ever be treated as anything higher than a 55A circuit, even though it has an oversized breaker. Since the wall connector only has settings for 50 or 60, you're NOT ALLOWED to use the setting for 60!But he said he checked with a building inspector before he installed mine since it was the 1st time he put in a Wall Charger and was told he could use the 6/3 with the 60 breaker.
In hindsight, I would have used 4-2 on the HPWC, but still used the 4-3 for my spare 14-50 (in case I put an HPWC there later). 6 gauge MC would have been a good option as well.
I couldn't really tell from a picture like that. I think the concern about that is with conduit size. Was there some existing conduit that was already in place for part of this distance that they were pulling wires through? There are certain "fill" restrictions, where given a certain diameter of conduit it's only allowed to have X number of wires of X gauge thickness in it. And that may have been what he was talking about, where they wouldn't be allowed to fit the 4 gauge wires in the conduit that was there because of it being too small.Is he correct that the 4g wiring wouldn’t work with my current set up ?
Just because NM cable was fished through finished walls doesn't mean that conduit could be. That's typically much more invasive, especially when it comes to bends. At minimum, it's way more labor-intensive.If you can fit 6/3 NM then you can fit two #6 THHN and one #10 THHN. Unless there is a reason you wanted the neutral for future changes. I think you'd need a minimum 3/4 inch conduit.
I couldn't really tell from a picture like that. I think the concern about that is with conduit size. Was there some existing conduit that was already in place for part of this distance that they were pulling wires through? There are certain "fill" restrictions, where given a certain diameter of conduit it's only allowed to have X number of wires of X gauge thickness in it. And that may have been what he was talking about, where they wouldn't be allowed to fit the 4 gauge wires in the conduit that was there because of it being too small.
View attachment 633419 The wire was run from my breaker box in the basement on top of the drop ceiling behind the drywall in my garage. The only place there is a 3/4 inch conduit is when it comes outside the drywall,.