220 volt from two 120 volt lines

[tator2k]

Ok thank you. Fixed and tested.

 

[yjfun]

Anoldur

edit:
Just thinking. If there was more than one outlet on the circuit, you'd have to convert them all to 240V.

That's the only problem. You also have to color the wire in the panel to show that it is no longer a neutral.

 

[AnOldUR]

You also have to color the wire in the panel to show that it is no longer a neutral.

Is that new code or something? My dryer has 10-2 running to it, white, black and ground. The white wires going to the breaker or at the dryer end are not colored in any special way.


Asking because I ran a dedicated 220V 20 amp line to my kitchen for a 3500W induction hot plate. Since you can't put a 120V plug in the outlet, I didn't see a problem with the color coding. Suppose someone could get into trouble down the road if they thought they could just change the receptacle to get 120, but that would be pretty dumb a$$. :cross:

Actually I ran 10-2 thinking that if I ever wanted to switch to something 30 amp, I'd have the option. In hind sight, I should have run 10-3 to cover all bases.

 

[yjfun]

I don't know when they changed that rule and the oldest code book I have around the house is a 2005 and it's in there. I know that inspectors have made us recolor the wires since at least 2000.

Just to clarify any time you use the white wire for anything other than a neutral you must color both ends of it any color other than white, gray, or green.

It does seem like a large amount of the code was written to protect stupid from hurting himself. Common sense does not prevail.

 

[Sparky]

Wire from 6 gage and lighter (ie - 6, 8, 10, 12, 14) needs to be color coated and not putting tape over it. This is strictly enforced in my area, but may not in other areas.

In the case of the 10-2 dryer, using the black and white as hots on the 240V, they should (at least) tape both ends of the white wire with red (or black) indicating that it is used as a hot.

Consider codes to be the least-common-denominator. They are basic. Go beefier and protect more.

 

[yjfun]

We are allowed to use tape in my area but I usually just color it with a sharpie.

 

[Stevo2569]

We are allowed to use tape in my area but I usually just color it with a sharpie.

+1 that's what everyone round here does.