220 volt wiring help needed

[stewie]

i tried googleing 220 volt wiring diagrams, dryer plug diagrams etc and came up empty handed. mostly it sent me to other search engines.

im trying to make an extention cord/plug adapter to go from my dryer outlet to my lincoln welder. i have the three prong (one L prong and two diagnal prong) dryer outlet, and the welder plug is another three prong plug that looks like an enlarged standard wall outlet. i have the appropriate plugs and recepticals along with 10 ft of 8 gage cord. the cord has three wires- white, black, and green.

my question is this; what color wire goes to which prong on each end (dryer plug and welding receptical)?

within the next few months, after a few more household projects are done, i will have the garage/shop wired by an electritian for 220. for now though i need to use the dryers outlet.

TIA
stewie

 

[Ironmen77]

L ----green = neutral

either black or white------ / \ -----------either black or white

220v black and white should both be "hot". Green should be neutral.
Check with volt meter to be sure.

 

[scottmcneal]

It could also be Black, red, white, green
HOT HOT COMMON Ground..

I have a new house, these are my colors.. Hope this helps

 

[stewie]

It could also be Black, red, white, green
HOT HOT COMMON Ground..

I have a new house, these are my colors.. Hope this helps

nope, i checked it before i purchased the parts. its the three prong dryer plug. the house was built in 1991 (before the wiring code change in 1996). i checked the plug prior to installing on the cable.

so, from what i gather (to make sure i understand correctly), its green wire from the L to the bottom (round) of the welder receptical, and it doesnt matter what terminal the black and white wires go to on either the dryer plug or the welder receptical. correct?

 

[scottmcneal]

Yep, sounds right to me..

 

[Matthew Currie]

Is this a basic ac 225 amp "buzz box?" Note that a dryer outlet is usually rated for 30 amps, and your welder probably wants a 50 amp circuit. Aside from some danger of overloading the 30 amp dryer outlet and wiring, you may blow fuses/breakers a lot if you use your welder at high settings, and probably oftener if you get your rods stuck a lot. Be really careful and keep an eye on things if you are running that kind of load. You may get away with it, but you must remember that you're running overloaded, and pay attention! * Many older 180 amp AC welders were specifically designed to run off of 30 amps, because this was once the standard service size for rural electrification, and all that many farms had available, but more recent models expect 50 (standard for a range outlet), and that is why dryer and range plugs differ, so that you won't plug them into the wrong outlets.

If at all possible, you should give your welder a circuit of its own on a 50 amp breaker, using the correct devices and wire, as soon as you can.

*or, to quote old Bob Dylan, "to live outside the law you must be honest."