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Posted by rvb on March 16, 2008, 10:04 pm
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Any help is appreciated.
I have a 50 amp breaker. I have #6 AWG wire with 3 conductors and a
ground wire. The welder has 2 black wires and a green wire. The
sheething on the welder's wire says 'green conductor for ground only'.
The plug I have has 3 flat blades and says 'for non-grounded use
only'.
I'm confused. Do I wire up the breaker with 2 hots, a neutral, and a
ground and wire the receptacle with 2 hots and the ground? I was
originally figuring I would use the 2 hots and a neutral from the
breaker to the receptacle.
What am I missing here?
--
As Iron Sharpens Iron,
So One Man Sharpens Another.
Proverbs 27:17
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Posted by Pete C. on March 16, 2008, 9:06 pm
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rvb wrote:
>
> Any help is appreciated.
>
> I have a 50 amp breaker. I have #6 AWG wire with 3 conductors and a
> ground wire. The welder has 2 black wires and a green wire. The
> sheething on the welder's wire says 'green conductor for ground only'.
> The plug I have has 3 flat blades and says 'for non-grounded use
> only'.
>
> I'm confused. Do I wire up the breaker with 2 hots, a neutral, and a
> ground and wire the receptacle with 2 hots and the ground? I was
> originally figuring I would use the 2 hots and a neutral from the
> breaker to the receptacle.
>
> What am I missing here?
You have the wrong plug / receptacle. A 240V welder doesn't use a
neutral connection. You need a 240V 50A grounded plug / receptacle.
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Posted by rvb on March 16, 2008, 11:24 pm
Please log in for more thread options wrote:
>You have the wrong plug / receptacle. A 240V welder doesn't use a
>neutral connection. You need a 240V 50A grounded plug / receptacle.
Crap. Thanks for the information, though. I was afraid of that.
But, I can still use my same wire, right? I just don't use the third
conductor, only the two hots and the ground?
--
As Iron Sharpens Iron,
So One Man Sharpens Another.
Proverbs 27:17
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Posted by RoyJ on March 16, 2008, 10:31 pm
Please log in for more thread options See my other post. The wire you have is great, the proper receptacle and
plug should run about $15 total at Home Despot.
rvb wrote:
> wrote:
>
>> You have the wrong plug / receptacle. A 240V welder doesn't use a
>> neutral connection. You need a 240V 50A grounded plug / receptacle.
>
> Crap. Thanks for the information, though. I was afraid of that.
>
> But, I can still use my same wire, right? I just don't use the third
> conductor, only the two hots and the ground?
> --
> As Iron Sharpens Iron,
> So One Man Sharpens Another.
> Proverbs 27:17
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Posted by RoyJ on March 16, 2008, 10:27 pm
Please log in for more thread options Your confusion results from three different 'standards' over the years.
The earliest 240 wiring had two hots and a neutral (red/black/white).
Later welders (70's??) were 240 only and had two hots and a ground
(red/black/green). The most modern code calls for 2 hots (red/black),
ground (green), and neutral (white) if NEEDED.
Your cable is suitable for the latest code which calls for a 4 conductor
receptacle and plug with 3 blades parallel to each other and a round or
'D' shaped pin for ground. I'd recommend heading off to Home Despot or
similar and getting a matched set.
I *think* it is still code legal to use the 2 blade and 'D' shaped pin
setup (maybe Bruce Bergman will weigh in here) which lacks a neutral.
And yo will still find a lot of older installations with the angle
blades which is not approved.
Hope that helps.
rvb wrote:
> Any help is appreciated.
>
> I have a 50 amp breaker. I have #6 AWG wire with 3 conductors and a
> ground wire. The welder has 2 black wires and a green wire. The
> sheething on the welder's wire says 'green conductor for ground only'.
> The plug I have has 3 flat blades and says 'for non-grounded use
> only'.
>
> I'm confused. Do I wire up the breaker with 2 hots, a neutral, and a
> ground and wire the receptacle with 2 hots and the ground? I was
> originally figuring I would use the 2 hots and a neutral from the
> breaker to the receptacle.
>
> What am I missing here?
> --
> As Iron Sharpens Iron,
> So One Man Sharpens Another.
> Proverbs 27:17
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> Any help is appreciated.
>
> I have a 50 amp breaker. I have #6 AWG wire with 3 conductors and a
> ground wire. The welder has 2 black wires and a green wire. The
> sheething on the welder's wire says 'green conductor for ground only'.
> The plug I have has 3 flat blades and says 'for non-grounded use
> only'.
>
> I'm confused. Do I wire up the breaker with 2 hots, a neutral, and a
> ground and wire the receptacle with 2 hots and the ground? I was
> originally figuring I would use the 2 hots and a neutral from the
> breaker to the receptacle.
>
> What am I missing here?