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Old 08-03-2012, 12:59 PM   #1
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220 volt to 110 volt ?

I have searched and have probably seen the answer but didn't realize it because of my NO knowledge of electrical wiring
I have read the posts where TT have been hooked up to 220 by mistake and I really don't want this to happen....
I have a 220 volt plug for my arc welder and I was wondering if it is possible to make a splitter of some kind to plug into this so I could plug my TT which is 110 v 30 amp? [with no melt down] I would not be attempting this on my own but rather a certified electrician would be doing the work.
Is there an already made adapter available ?
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Old 08-03-2012, 01:05 PM   #2
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You can run down to Wally World (Wal-Mart in Canada), in their RV section usually near automotive, and buy an adapter already made for this purpose if your welder has the same kind of 50 amp plug as below. They are less than $10. Most all of your RV dealers will have them also, but may be higher.



or



Either one of these adapters works by just terminating one of the 110 hot lines coming from your 220 volt outlet....so you have just one 110 volt hot line to power your camper, as it should be.

Personally, I prefer the dog-bone kind in the top pic (it looks like a dogbone when laid out), but either one does the same job.
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Old 08-03-2012, 01:32 PM   #3
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Well unfortunately my welder plug doesn't look like that This is what it looks like and has 250v 50amps on the face. Is it still possible to get an adapter
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Old 08-03-2012, 01:40 PM   #4
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IMO, I think you might have a problem doing that.
There is no Neutral wire in your welder's socket; just 2 hots and a ground wire.

Typically, the ground wire is not of sufficient gauge to handle the job of a neutral. So you ONLY have 220VAC with no possibility of "downshifting" to 110VAC.
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Old 08-03-2012, 01:42 PM   #5
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Originally Posted by tugger View Post
Well unfortunately my welder plug doesn't look like that This is what it looks like and has 250v 50amps on the face. Is it still possible to get an adapter
OK, you might want to read this:

welding

It explains how you can change the breaker and receptacle to make it work (no adapter), but you then wouldn't be able to use it for welding.

EDIT: I see Lou was busy as I was typing and said the same.
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Old 08-03-2012, 01:45 PM   #6
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Well how about that. They have the same opinion

Another article for the Herkbrary though!
Thanks
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Old 08-03-2012, 01:58 PM   #7
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Ok I will still need my welder plug in so how about my dryer plug in which looks like this, possible to get or make an adapter?
You can see I am grasping here to get it done easy as i like all things plug and play....

This I think is 220v and 30 amps ? 110v for dryer motor and 220v for heating element..
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Old 08-03-2012, 02:04 PM   #8
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Quote:
Originally Posted by tugger
Ok I will still need my welder plug in so how about my dryer plug in which looks like this, possible to get or make an adapter?
You can see I am grasping here to get it done easy as i like all things plug and play....

This I think is 220v and 30 amps ? 110v for dryer motor and 220v for heating element..
Just buy a rv receptacle that will work right and be done with it.
There 20 bucks at Lowe's or home depot.
Get a 30 amp 110v breaker and 5' of 8 gauge wire.
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Old 08-03-2012, 02:14 PM   #9
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Put in the proper RV-style 240-volt receptacle in place of your current welder plug. It's a NEMA 14-50R. Accept no substitutes.

MAKE SURE you tell the electrician you want all four wires in place, even if you have to pull new wires into the box from the panel! Tell him or her that it HAS to be a full, correct, 50-amp service. That includes a ganged 50-amp double breaker

L1, L2, neutral, and ground. ALL FOUR!!!

Then, buy the RV adapter from post #2 above to get your 30-amp RV service.

Then, replace your welder's plug to match the receptacle.

Wha-laaaa!

Since I haven't used my welder in a long time, that last part I have yet to accomplish, but someday, when I get a Round Tuit.......

Pop
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Old 08-03-2012, 02:15 PM   #10
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Here is a great little pdf file that hopefully can be made a sticky somewhere by the administrators. It is a handout to electricians, and everyone else on how to correctly wire for a 30 amp rv outlet. We have had several members as of late who have had family and professionals incorrectly wire for their trailers, with ensuing damage.

I wish all RV dealers would include this every time they sell a trailer with 30 amp service.

http://www.myrv.us/Imgs/PDF/30-amp%20Service.pdf
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Old 08-03-2012, 02:56 PM   #11
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Originally Posted by tugger View Post
Ok I will still need my welder plug in so how about my dryer plug in which looks like this, possible to get or make an adapter?
You can see I am grasping here to get it done easy as i like all things plug and play....

This I think is 220v and 30 amps ? 110v for dryer motor and 220v for heating element..
Yes, you can use that, you'll just need to make your own dogbone adapter. You just won't connect one of the lines....while connecting the ground, neutral, and one line. Lowe's should have everything you need.
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Old 08-03-2012, 03:07 PM   #12
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Quote:
Originally Posted by wmtire View Post
Here is a great little pdf file that hopefully can be made a sticky somewhere by the administrators. It is a handout to electricians, and everyone else on how to correctly wire for a 30 amp rv outlet. We have had several members as of late who have had family and professionals incorrectly wire for their trailers, with ensuing damage.

I wish all RV dealers would include this every time they sell a trailer with 30 amp service.

http://www.myrv.us/Imgs/PDF/30-amp%20Service.pdf
Copied to the FAQ and "stuck"
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Old 08-03-2012, 04:03 PM   #13
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If you use the plug that's pictured above, which is 30-amp at 240-volts, not 50-amp, and then you use the mating plug for that one, you will be fine, BUT ONLY AT HOME! You won't be able to use your home-made adapter at any campground. You lose some versatility that way. Besides, a 30-amp plug for your welder might not be adaquate.

If you're going to have any flexibility in it's use, go back and re-read post #9 above.

If you also simply buy the RV 50-amp to 30-amp adapter, it will be less money, too, as the plugs and wire could cost you more, depending on their quality, and this is an area in which I wouldn't skimp.

And, if you build your own, you run the risk of a mis-wire and subsequent high-tragedy. You DID say that you weren't electrically-savvy.

BTW, an added bonus:

You are also then able to weld at most RV spots!

More seriously, you would be able to buy primary extension cords for your welder at any good RV supplier.

Pop
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Old 08-03-2012, 05:30 PM   #14
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Quote:
Originally Posted by SpringerPop View Post
Put in the proper RV-style 240-volt receptacle in place of your current welder plug. It's a NEMA 14-50R. Accept no substitutes.

MAKE SURE you tell the electrician you want all four wires in place, even if you have to pull new wires into the box from the panel! Tell him or her that it HAS to be a full, correct, 50-amp service. That includes a ganged 50-amp double breaker

L1, L2, neutral, and ground. ALL FOUR!!!

Then, buy the RV adapter from post #2 above to get your 30-amp RV service.

Then, replace your welder's plug to match the receptacle.

Wha-laaaa!

Since I haven't used my welder in a long time, that last part I have yet to accomplish, but someday, when I get a Round Tuit.......

Pop
This gets my vote..! IMHO this would be the smart way to go.
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Old 08-03-2012, 05:35 PM   #15
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BOTH your welder and dryer outlets ARE 220V the adapter shown by wmtire is to reduce 50A 110V to 30A 110V only, it will in no way reduce 220V to 110V.
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Old 08-03-2012, 06:02 PM   #16
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BOTH your welder and dryer outlets ARE 220V the adapter shown by wmtire is to reduce 50A 110V to 30A 110V only, it will in no way reduce 220V to 110V.
Not technically true. A "50amp RV service to 30 amp RV service" pigtail will take only one leg of a properly wired 220 outlet (with Neutral) and deliver 110 VAC to the camper's 30 amp service panel.
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Old 08-03-2012, 06:03 PM   #17
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Quote:
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BOTH your welder and dryer outlets ARE 220V the adapter shown by wmtire is to reduce 50A 110V to 30A 110V only, it will in no way reduce 220V to 110V.
No.....

If he uses the NEMA 14-50R as described above (which, yes, IS a 240-volt plug) and uses the adapter shown in Post #2, he will get his 120-volts, as the adapter picks up only one leg.

EDIT: Guess Herc was a-postin ' whilst I was a-typin'!

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Old 08-03-2012, 06:56 PM   #18
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Either one of these adapters works by just terminating one of the 110 hot lines coming from your 220 volt outlet....so you have just one 110 volt hot line to power your camper, as it should be.
Lindy, that is how these 50 amp to 30 amp adapters work, by terminating either the L1 or L2 lines internally inside the adapter. If you took apart the adapter, you would see that one of the 110v hot lines is just not connected to anything (wire) past the terminal end (spade).

So, you just have your ground, neutral, and 1 (one) hot line connecting to your 30 amp outlet.....which makes it 110 v and not 220 v.

You can easily make your own adapter, but need to be real confident in your electrical ability. As SpringerPop has correctly pointed out, you can just as easily mess it up too.

I was going to post a wiring diagram, to make a dog bone adapter for the dryer outlet and using it for the 30 amp RV service. However, I would hate to be responsible for someone tackling the project and maybe messing it up.
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Old 08-03-2012, 07:04 PM   #19
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I was going to post a wiring diagram, to make a dog bone adapter for the dryer outlet and using it for the 30 amp RV service. However, I would hate to be responsible for someone tackling the project and maybe messing it up.
Yea, the O/P did write in Post #1, "my NO knowledge of electrical wiring".

Good we take that into consideration.

Pop
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Old 08-03-2012, 08:10 PM   #20
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Yea, the O/P did write in Post #1, "my NO knowledge of electrical wiring".

Good we take that into consideration.

Pop
Agreed.

Tugger, since you like plug-n-play and are going to have an electrician over anyway......why don't you just install a 30 amp outlet box (with breaker and outlet pre-installed in it) and go first class. I don't know if ya have Home Depots or such in Canada, but I'm sure you can get these off Amazon or other electrical supply houses in your area. I've even seen them at Menard's. They are not expensive.

http://www.amazon.com/Connecticut-El...+rv+receptacle

Connecticut Electric 30 Amp RV Power Outlet With 30A 1P Breaker CESMPSC13HR at The Home Depot

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