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ponch37300 12-03-2007 12:44 PM

input amps/size?
I need to put in an outlet for a miller welder that is 230 volts and has an input amperes at 53. The outlet is only going to be about 6 ft. from the sub panel. From what i read i need a 50 amp three wire recep with 6 gauge wire running to it? Just checking to make sure this is what i need to do this correctly. Thanks.

Stubbie 12-03-2007 04:25 PM

Poncho does this welder have a cord and plug on it or do you need to do that also? Normally with welders with duty cycles less than 100% we install a 6-50 r and 6 awg for a welder with a 53 amp input. You can serve it with a 6 awg nm-b cable and a 50 or 60 amp breaker.

ponch37300 12-03-2007 05:17 PM

The welder doesn't have a plug on it now. Just a 10 ft or so cord sticking out the back. So i will be getting a plug for that to. I looked for the twist lock at HD and they didn't have them. Thanks for your help again.

Stubbie 12-03-2007 07:06 PM

Poncho it doesnt have to be a twist lock just a 6-50r not an L6-50r. I wondering if this welder was originally hardwired to a jb or disconnect? Can you by chance share the model number and the miller name of your welder? for instance... millermatic 250...thunderbolt 200 whatever they call it?

ponch37300 12-03-2007 07:30 PM

Stubbie..what is the difference between L6-50r and 6-50r just out of curiosity? Here is a link to the welder
Hopefully this helps. I think it was wired to a disconnect but i would like a plug now since my outlet is going to be close to the breaker box the breaker will be the means of disconnect right? Also with a plug i can disconnect it for storage. Thanks again for your knowledge.

Stubbie 12-03-2007 08:05 PM

The L means it is a locking style receptacle which is fine if thats what you want. Thanks for the actually is 47 amps input at the rated output amperage. So a 50 amp receptacle is what you want the locking one or the non-locking one is fine. Off the top of my head I'm not sure they make a 50 amp locking type. You might google 'nema locking blade configuration chart' and find out. You will be looking for a 2 wire grounding type 250 volt.

ponch37300 12-03-2007 09:26 PM

Thanks stubbie...No locking 50amp plugs. I thought it would be nice to have a locking one but i guess the straight blade will do. That should be it for this one! Thanks again stubbie.

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