Does anyone know the correct way to wire a 650R outlet?

[BooRadley]

This is for a welder. 250/50. Crooked handyman wired for me a circuit that isn't code, and an outlet that is incompatible with my welder. Circuit isn't code because he used 10/2 when code says to use 6/3. But since I will be using welder for thin materials only, and infrequently, 10/2 will do. I'll never pull more than 20 amps max with this welder, and usually less, so, I won't bother changing the wire out. But I do need to change the outlet to a nema 650.

What I need to know which wire goes where? Instructions on box are useless, and nothing on the outlet is marked. I have wired other outlets before, but never a 650R, so I need to check to make sure what i have in my head is the right thing to do.

P.S. Handyman won't honor his 'guarantee', so that is not an option. Bad man, and I've no more money to spend on this matter, so I have to do it myself.

 

[Charles (in GA)]

Two hots on the flat blades, and ground on the half round pin. No neutral on this receptacle/plug.

follow the link, scroll down to the 50 amp section, and find the 6-50. You will see a tiny G beside the half round pin, indicating it is a ground.

http://www.generatorjoe.net/html/web/outlet/quailplug.html

Charles

 

[mrb]

note that a 6-50 is a 2 pole 3 wire receptacle, if you were wiring it with #6 romex, you would use 6/2 not 6/3

 

[BooRadley]

So, it doesn't matter which hot wire goes to which flat blade? If not, fabulous! Thanks very much.

 

[Alchymist]

Smaller wire on the larger breaker is legal for welding circuits.

 

[BooRadley]

This welder draws 41 Amps when run on the highest setting. As I understand it, 10/2 is not to be used with a 50 Amp breaker, and is not supposed to take more than a 30 Amp load. According to NEC. Is that right? I could be wrong.

 

[mrb]

This welder draws 41 Amps when run on the highest setting. As I understand it, 10/2 is not to be used with a 50 Amp breaker, and is not supposed to take more than a 30 Amp load. According to NEC. Is that right? I could be wrong.

theres another chart for welders only that takes duty cycle into account and allows smaller wire (although I dont like it esp. in residential situations) your 10/2 is fine, it would be a good idea to label the receptacle 'welder use only'

 

[BooRadley]

Wow. Well, I just learned a few new things tonight.

 

[JimDon]

which welder? yes NEC OKs smaller wire for welder circuit only because of overall duty cycle. If you're running a buzz box or a Miller 210 or something comparable , you're gonna be just fine with that 10-2w/Gr. Even with a decent sized Tig, your hands are gonna get hot way before the wire will. way way way too many people who weld at home think a 10% duty cycle is going to be surpassed regularly. WRONG! With most projects, you'll be re-positiong, moving around , changing sticks, etc. to even get close. I run the piss out of my Miller buzz box all the time and never ever get those 10-2 cables warm.
Cheers,
JimDon

 

[BooRadley]

Hi Jim. Here she be:
http://www.northerntool.com/shop/tools/product_200381950_200381950

 

[JimDon]

you're good to go as is.
Cheers,
Jim

 

[nehog]

Be careful that there is not a minimum AWG size for that outlet. Wiring with a smaller (your 12 AWG) may create problems if it is designed for a minimum of #8.

 

[Alchymist]

Be careful that there is not a minimum AWG size for that outlet. Wiring with a smaller (your 12 AWG) may create problems if it is designed for a minimum of #8.

OP said #10 - should be no problem.....

 

[nehog]

OP said #10 - should be no problem.....

me--> <-- Alchymist

And I read his original post multiple times! Don't know how I got to thinking 12 AWG?

 

[mrb]

i looked at a leviton 6-50 i have and it has a wire range of #10-#4 CU/AL

 

[W-Cummins]

theres another chart for welders only that takes duty cycle into account and allows smaller wire (although I dont like it esp. in residential situations) your 10/2 is fine, it would be a good idea to label the receptacle 'welder use only'

I don't like it either in a non commercial install. If I were the inspector I would NOT pass it. I also feel the same way about the reduced (sec 430) motor wire requirements. Unless it was a non-plug ( hardwired ) I would fail them too. There is just too great of a chance the next home owner will plug in some thing else in. Even if it's marked, some one paints the wall, and the next guy plugs in a range and cooks the 10 gauge wire!

William...