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Old 04-29-2012, 09:57 AM   #1
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Wiring NEMA 6-50R


I know this is beating a dead horse but I feel like I need some clarification. I will be installing a NEMA 6-50R Receptacle for a welder in my garage and I have figured out that I will not need the neutral from reading other posts here. But do I need to ground the receptacle box? I am using a metal Raco box.

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Old 04-29-2012, 10:01 AM   #2
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Wiring NEMA 6-50R


are you running a new cable with an equipment grounding conductor? if so, ground the metal box the receptacle is located in.

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Old 04-29-2012, 10:09 AM   #3
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Wiring NEMA 6-50R


Yes, new cable, 6/3 NM. So if the ground is connected to the receptacle, how do I go about grounding the box?
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Old 04-29-2012, 10:15 AM   #4
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Wiring NEMA 6-50R


The box should have a tapped hole for a 10-32 screw.
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Old 04-29-2012, 10:21 AM   #5
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Wiring NEMA 6-50R


Yep, I stuck a green ground screw in it. Do I then wirenut two pieces of bare #10? to the cable ground and attach one to the box and one to the receptacle?
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Old 04-29-2012, 10:37 AM   #6
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Wiring NEMA 6-50R


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Yep, I stuck a green ground screw in it. Do I then wirenut two pieces of bare #10? to the cable ground and attach one to the box and one to the receptacle?
install a pigtail on the receptacle and a pigtail on the box ground. wirenut the two pigtails with the ground in the cable. done.
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Old 04-29-2012, 10:41 AM   #7
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Wiring NEMA 6-50R


Got it. Duh. Thanks.
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Old 04-29-2012, 02:31 PM   #8
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Wiring NEMA 6-50R


Leave the ground long, wrap it around the screw, then on to the receptacle. NO need for splicing.
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Old 04-29-2012, 08:29 PM   #9
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Wiring NEMA 6-50R


You only need a 6/2 cable for a welder outlet. The neutral wire would not be used if you installed a 6/3.

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