What's involved in? 220 volt socket

Though we have a gas range, there used to be an electric one and it is a

The two hots and neutral are all # 8 plus a safety ground that looks like #14, I should have looked first before I said I never saw such a setup.

Yes.

Most states and municipalities follow the NEC, with some exceptions. I doubt requiring a 4 wire connection for new construction 240V dryer, stoves, etc is one of them. And there are millions of 4 wire connections out there, the fact that you don't know that and instead are diverting off into

Go to any appliance manufacturer and read the install manuals and it will tell you that the 240V dryer, stove etc. should be hooked up to 4 w ires, if available. It's not unusual, it's the preferred, code compliant way today. If you have a cite for Wisconsin code that says otherwise, I'm sure we'd all like to see it.

Well, maybe you didn't see it? I do that all the time. Stuff in my house, and I find it later.

Well, all I can say is that as soon as I find I am in error, I admit it.

That's rare, now days. When I'm in error, uh, ain't tellin.

When I was still working I found out that if I was wrong and admitted it at once, I never got in trouble. Many times people were too surprised to say much.

I've had a few similar experiences.

Yep, you are right...an item such as an oven or drier would require a neutral as there are 115v controls, lights etc.

Lack of reading comprehension.

I give you credit for correcting the error of your ways. Many here won't admit they are ever wrong.

Nothing said about 3 phase

Nope. Code today REQUIRES 4 wire - L1, L2, Neutral, and safety ground.

Standard equipment for new drier and electric range outlets.

Large majority of multi unit residential buildings are 120/208 3 phase - each unit only sees the single phase service.

I make plenty of mistakes, might as well fess up asap.

Actually 250.60 said the "grounded conductor" before 1996 so it was the neutral and with one exception (SE cable) it needed to be a white insulated wire. That is why you saw 10/3 romex. If the 10/3 had a ground, it was either connected to the box or simply cut off.