12

I'm going to focus on the modern way to do this, since it's so very correct that I'd almost call other ways wrong. The newest EVSEs provide for that. Use them. I.E. don't make the thing harder than it is "for tradition's sake". The latest EVSE's are designed exactly for your use-case, since "multiple EVs" is not a surprise. These share a ...


10

Normally, your panel can be way oversubscribed. That's because most loads are either not on at the same time (heating vs. cooling, only some cooking appliances, etc.) or use far less than the breaker rating (lighting circuits, most receptacle circuits unless powering heaters or maxed-out computer servers). EV charging is a little different, because it is ...


5

According to the brochure for the Square D QO 90 Amp Breaker it can handle 4 AWG to 2/0 AWG, so yes. And thanks to NoSparksPlease, Homeline too.


4

On another forum, after a long diatribe about choosing correct wire sizes, I said "... OR, just use 2-2-2-4 aluminum for everything". It covers every base and it's very favorably priced. There's nothing wrong with aluminum wire at such a large feeder size. (some novices have undue fear of aluminum, but they are not versed in the full details/...


3

So these panels are Eaton CH, which is the finest panel currently offered in the consumer space. And note the way your main breaker is a seemingly normal breaker - that's true, it "back-feeds" the bus. That makes your panel suitable for a simple, inexpensive generator interlock - the Eaton CHML. The interlock is required by law to avoid you ...


2

Looking at the picture of the conduit (when there was only one image) it looks like maybe 3/4" Rigid Metallic Conduit (RMC), it is possible the 12/2 in the pipe exceeds NEC the maximum fill rule that you have to calculate flat cable as single round conductor using the widest dimension of the cable. It's not even worth the time to do the measurements and ...


1

Breaker in sub panel isn't important just so it's rated at least the capacity of the feed. What's important is the rating of the breaker in your main panel FEEDING the sub-panel and that it's not oversized given the wire size. Attached is a chart showing wire ampacities in various conditions. Short answer is NO, you can't run 60 amps on 8 ga. Also, please ...


1

Don't bother buying a single 30A breaker. Just leave the black wire on the breaker it's on, and move the white to the neutral bar. Yes, you can split the black hot wire to the two poles of the subpanel. Do not put 2 wires on a lug, use a wire nut. However if your reason for doing so is to buy a smaller and very slightly cheaper subpanel, I discourage this. ...


1

Use 1½" ENT for the run in the basement While running rigid conduit thru existing joists is indeed a pain one's better off avoiding, fortunately for you, there is an easy alternative. Electrical Nonmetallic Tubing (ENT/"smurf tube") is listed to mate with same-sized PVC conduit bell-ends and fittings, so you can use ENT of the appropriate ...


Only top voted, non community-wiki answers of a minimum length are eligible