Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I have a single 50 amp 240 volt outlet. However, I've been using both my dryer and a welder on this same outlet, both have 3-prong (10-50P) plugs. It can be difficult to plug and unplug cords from this outlet. Are there any ways to share this outlet with both devices with the assumption that I won't be using both simultaneously? Splitter box (with toggle switch)? Splitter cable?

I plan to eventually run a second 240 volt outlet when I have the time and consider this a temporary solution.

share|improve this question
1  
Are you in the US (110/220V @60hz) or Europe (220V @50hz), as this will make a difference? –  Tester101 Jun 22 '12 at 16:00
    
Yes, I am in the US. –  Benzo Jun 22 '12 at 17:08
    
I may have been incorrect. It's likely 240 volt US for the dryer and welder. The connector is a 3 prong plug with 3 flat prongs, I believe the plug is called 10-50P. –  Benzo Jun 22 '12 at 19:27
    
Apparently after more research, the outlet could be 250v instead of 240. I'll try to confirm this. –  Benzo Jun 22 '12 at 19:45
3  
The outlet will be rated at 250V, this does not mean you'll actually have 250V at the receptacle. In the US one might say 110V, 120V, 220V or 240V, but they are talking about exactly the same thing since US residential single phase power will range from 110V-125V / 220V-250V. All devices will be rated at the max 125V / 250V. –  Tester101 Jun 22 '12 at 20:41
add comment

3 Answers

I think for what you want to do:

  1. temporary short term solution
  2. you guarantee you will never operate both the dryer and welder at the same time

You could consider building a 220V 30A power strip. Without knowing your welder, I'll list parts from Home Depot that might work but you have to confirm their suitability for your use.

Please review this URL to determine your plug NEMA type. It will probably be NEMA 10-30 or 14-30. Make sure the plugs, receptacles and dryer cord all match.

Note this is for standard 30A dryer. If you need 50A, you will need different receptacles and cord. Probably a range cord. But I assume that since you are currently plugging your welder into your dryer receptacle, 30A will be sufficient.

  1. Raco 2-Gang 42 cu. in. Square Boxes Model # 8257 Internet # 202058366
    You should screw this to the wall if possible for safety, as that will reduce stress on the dryer cord.

    Raco 2-Gang 42 cu. in. Square Boxes

  2. 6 ft.10/4 4-Wire Black Dryer Cord Model # AW20009 Internet # 100672788 Store SKU # 601004

    6 ft.10/4 4-Wire Black Dryer Cord

  3. (two) Leviton 30-Amp 2-Pole Flush-Mount Outlet Model # R50-05207-000 Store SKU # 621336

    Leviton 30-Amp 2-Pole Flush-Mount Outlet

  4. wire, wire nuts, box cover, cord clamp etc.
    If your box can be mounted close enough to the existing outlet, you can cut the excess off your dryer or range cord and use that excess wire to connect the two new outlets. This is just a very minor optimization and you might figure it out as you assembled the box but this way, you'll know before you go shopping.

share|improve this answer
    
I get the idea, I think I need the NEMA 10-50p connectors, but I'm assuming it would be a similar setup. –  Benzo Jun 22 '12 at 19:42
    
I like this simple solution. –  pilotcam Jun 22 '12 at 19:47
    
I like this but it's not a "power strip" (which made me think of a power bar -- something that would allow both connections at once) so much as an adapter. The downside of this is it requires plugging and unplugging a fairly large connector which is not necessarily designed to be plugged/unplugged that many times. Due to the size, there is also a higher risk of shock if you touch one of the large prongs. For this reason, @ppumpkin's solution is safer, but it does really depend on how often the plug is being swapped. –  gregmac Jun 26 '12 at 17:03
2  
Did you miss the fact that there are two outlets in the box so that both plugs are plugged in and need not be unplugged to use either device? –  Philip Ngai Jun 26 '12 at 17:30
add comment

At first I was not sure what you meant. Basically you only want to use one or the other without plugging in and out.

  • Simple answer is No.
  • Not for home applications.. maybe some commercial or heavy industry ones.. but the plugs are different.

  • Not so simple answer.. You can make one :-)

You will need a highly rated rotary switch like this one (660volt 10A)(220V 30A)

enter image description here

Get a 3 Gang wall box or 3 Gang plug box

enter image description here

Find matching 1 gang or 2 gang plugs

enter image description here

A matching Blanking plate or 2 just in case... because you need to fit the switch in this plate. Using a rotary drill will help get a nice round hole in the plate.

enter image description here

You will need some basic wiring up which should be simple to do.

enter image description here

You can most of this stuff at your local home builder shop. The rotary switch you might need to go to an electrical wholesaler or order from ebay as its not a popular thing kept in stock.

share|improve this answer
1  
Careful with this solution in the US... you would want a double-pole switch since both legs are HOT (not at earth potential). Would still work, but the switch gives the illusion of zero potential when that is not the case. –  pilotcam Jun 22 '12 at 19:46
add comment

Just use an extension cord with two outlets, as you would with any other outlet:

exteionsion cord

Stores often stock these extension cords next to the generators.

Your circuit breaker will ensure that you don't overload your circuit, even if you should happen to use both devices at once.

share|improve this answer
1  
I havn't been able to find any Y-cables that support the 10-50P connectors. –  Benzo Jun 22 '12 at 19:40
    
@Benzo I doubt that anyone makes them. Which means this answer is useless. –  Brad Gilbert Jun 26 '12 at 15:57
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.