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Recent content by dewhite04

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    Sizing neutral for subpanel.

    Thanks for your reply! That's the basic information I was seeking, although I've now simplified the plan by putting only balanced loads in this subpanel, with no neutral being required. I guess just a lucky guess on my part that #8 would have been a good size to go with. This is the exact...
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    Sizing neutral for subpanel.

    2017 NEC 90.5 Mandatory Rules, Permissive Rules, and Explanatory Material. (A) Mandatory Rules. Mandatory rules of this Code are those that identify actions that are specifically required or prohibited and are characterized by the use of the terms shall or shall not.
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    Sizing neutral for subpanel.

    I don't disagree that it would be a terrible idea. What I was asking for was a code citation so I could better understand what is allowable. If the only unbalanced load is a dedicated 15A/120v receptacle, why couldn't the neutral feeder be a #14?
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    Sizing neutral for subpanel.

    I do appreciate that suggestion. It would have been my preference to use a larger subpanel, but the area available on the wall is limited. Rather than continuing to poke at reducing the size of the neutral, I have decided to keep the 15A RV circuit in the main panel and move an additional...
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    Sizing neutral for subpanel.

    I'm installing a subpanel directly adjacent to the main, which will have 3 connected loads: 1. Electric Vehicle Service Equipment with a max load of 48A @ 240v. Because this is an EVSE, continuous use makes this a 60A load. 2. HVAC condenser with a nameplate MCA of 21.1A @ 240v. 3. A...
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    14-50R Install for Tesla Model 3

    Checking-in to say that I pulled through that #10 for the air compressor EGC today. I had to fish around in my parts bin for a while to find a blue wirenut big enough to twist (4) #10s together. Once again, I very much appreciate your bringing this mistake to my attention. On the matter of...
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    14-50R Install for Tesla Model 3

    All of your assumptions are correct. This is a dedicated motor circuit without any cord/plug or other devices. I know where I got into trouble. I originally sized the EGC based on the required conductor size of #12, before I thought to de-rate for CCCs and ambient, which pushed to the #10...
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    14-50R Install for Tesla Model 3

    If that's right, I can & will pull through a bigger wire right away. I didn't pick the #12 randomly though. I'm assuming that you're thinking about Table 250.122 where the 30A breaker would require a minimum #10 EGC? This air compressor has one of those "cheater" motors that has a "SPeciaL"...
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    14-50R Install for Tesla Model 3

    So, after having a few days to think it through, I did exactly what you suggested. :lol_hitti I pulled (3) #8s & (3) #10s through a piece of 3/4" FMC into a RACO 206 (which fit my existing opening very well). I then attached an extension ring to that and put my recep. in a crushed corner...
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    14-50R Install for Tesla Model 3

    Good advice. I was thinking just to leave the sheathing on the 6/3 long enough to extend past the lip of the box into the extender ring. It certainly won't hurt anything to do both. Regarding the 1" KO, would I be violating NEC by field-modifying the 232-OW with a step-bit to open up one of...
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    14-50R Install for Tesla Model 3

    Bingo. I have purchased a Model 3 "Long Range" which has a ~75kWh battery pack, and an on-board charger capable of a maximum of 11.52kW charge rate, unless using DC fast-charging. Per 625.14, EV charging is considered continuous use (rightly so, because it will often take more than 3 hours...
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    14-50R Install for Tesla Model 3

    Thanks for your thoughts! I came back this morning to say that I had spent more time last night looking at my options and came upon the RACO 232-OW. My plan, as of now, is to use that with a RACO 201 extender ring outside the wall and a Steel City RS13-10R crushed corner cover to hold the...
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    14-50R Install for Tesla Model 3

    I can't promise I'll follow your advice, but it is sincerely appreciated and I will consider it carefully.
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    14-50R Install for Tesla Model 3

    Re: 14-50R Install for Tesla Model Agreed.
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    14-50R Install for Tesla Model 3

    Re: 14-50R Install for Tesla Model You are correct that I had passed the old #10 THHNs through the KO, floating inside the wall, into the current wall box. I didn't know then, but I do know now, that wasn't totally kosher. I did use an anti-short at the KO and wrapped some tape on the...
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