NEMA 14-30 to 6-50r adapter

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  #1  
Old 10-14-14, 05:35 PM
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NEMA 14-30 to 6-50r adapter

I'm trying to make an adapter to hook up my dryer outlet (NEMA 14-30) to my welder (NEMA 6-50r). The dryer outlet is 4 prong while my welder is 3.

I know it's possible because this is being sold on eBay:
4 Wire Clothes Dryer to Welder Plug Adaptor NEMA 14 30 to 6 50R Adapter 30Amp | eBay

I've found this one:
14' of 10 4 Power Cable with 4 Prong Dryer Plug | eBay

I'd like to get that one and add the 6-50R plug on the end of it. It'll be great length and for a great price. I'm going from a 4 wire to a 3 wire.... which wire would I need not connect and would I just wrap it with electrical tape? What's the best way to do this?
Thanks
 
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  #2  
Old 10-14-14, 06:01 PM
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Welcome to the forums!

Your dryer is wired for a 4 wire hookup and the welder is a 3 wire hookup. The dryer needs a neutral which the welder wiring does not have. Making an adapter will either leave the dryer ungrounded, Runnig current on the equipment grounding conductor, or it won't work due to the lack of 120 volts. You could also damage the timer components.

I suggest looking elsewhere to power your dryer.
 
  #3  
Old 10-14-14, 06:24 PM
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Thanks for the response. I wasn't changing out the dryer outlet. I was going to use the outlet that's already in the wall and make an adapter to plug in that goes to the 6-50r outlet to power my welder. It appears I'll just have an extra neutral going to the welder that I can just cut off and wrap in electric tape while using the other three wires to the 6-50r outlet. Will that work?
 
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Old 10-14-14, 06:35 PM
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Use a NEMA 14-30P, 10-3 SO, service cord connector, surface mount 6-50r. Since the cord has only three wires nothing to cut.
 
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Old 10-14-14, 06:48 PM
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Oh....I misunderstood. Make sure you welder is not more than 30 amps or you will be tripping the breaker a lot.
 
  #6  
Old 10-14-14, 07:40 PM
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Thanks for the response Ray. The dryer cord has 4 cords though, so unless I change that connection which I don't plan on doing, I'll have 4 wires going to the outlet adapter, unless I missed what you're saying?
Thanks!
 
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Old 10-14-14, 07:49 PM
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I was not talking about using a dryer cord. I was talking about making your own curd using service cord and a plug. Probably cheaper. You just connect the three wires of the 10-3 to the two hot and ground prong.

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  #8  
Old 10-15-14, 05:23 PM
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I think I see what you're saying Ray... I can just plug the 3 wire plug into the dryer outlets 4 plug outlet, correct? I just need to make sure the wires match up to the correct plug in the wall and I should be fine not using the fourth prong, right?

Thanks!
 
  #9  
Old 10-15-14, 05:27 PM
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I can just plug the 3 wire plug into the dryer
No it is a four prong plug but you don't connect a wire to the neutral blade.
 
  #10  
Old 10-15-14, 05:38 PM
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I appreciate you're patience and I'm sorry if I keep asking dumb questions.

Wouldn't it be the same as plugging in a 3 prong plug in as it would be a 4 prong with one wire not attached?

I think I figured it out... if I buy this:
http://i.ebayimg.com/00/s/MTIwMFgxNj...UE2zu/$_57.JPG

It'll fit directly into my dryer outlet. I can then add my plug (6-50r) to the end of it, cutting off the neutral wire.

Would going from a 30 amp outlet to a 50 amp plug be alright too? If there are any more than 30 amps going through it, the breaker will switch to off.

THANK YOU AGAIN!
 

Last edited by ray2047; 10-15-14 at 06:49 PM. Reason: Fix link.
  #11  
Old 10-15-14, 06:47 PM
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Depending on the duty cycle of the welder and amps it draws it may or may not trip the breaker.
 
  #12  
Old 10-15-14, 06:54 PM
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I should be fine, don't think it'll draw more than 30 amps. So the following will work:

I think I figured it out... if I buy this:
http://i.ebayimg.com/00/s/MTIwMFgxNj...UE2zu/$_57.JPG

It'll fit directly into my dryer outlet. I can then add my plug (6-50r) to the end of it, cutting off the neutral wire.


?

Thanks!
 

Last edited by ray2047; 10-15-14 at 07:04 PM. Reason: Remove referer.
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