need someone to help me identify this plug
- Thread starter Cobra6
- Start date
Nema 14-50P. 120/240 volt, 50 amp, single phase 3 wire (neutral). The outer vertical slots are line 1 & 2. The center bottom is the neutral connection and the upper "U" is the ground.
Sounds to me like they may have used it for a RV?.
Sounds to me like they may have used it for a RV?.
Last edited:
Highbeam
Well-known member
Typically used for.....
In a garage, backfeeding the panel with a suicide cord. Or an oven/dryer. It is not a standard welding plug.
In a garage, backfeeding the panel with a suicide cord. Or an oven/dryer. It is not a standard welding plug.
I wondered about that - especially since it is right next to the door on the wall that is only 2 feet wide or so, and easy to run outside.
First thought was a charging station for an electric car, but the house is 15 years old - too old for that. The lady that lived ther had not a clue.
iBuckethed
Well-known member
Don't forget about the EV1. The time frame actually fits as they were produced from '96-'99.
iB
Zelatore
Well-known member
I don't know RVs specifically, but I think they mirror what we use in the marine world and that's definitely not a standard 50A/250v connector for us.
rlitman
Well-known member
No idea why THAT outlet would be outside, but it is pretty much only used for an oven/range. However, that particular outlet is not set up for exterior use.
Az Scooter
Well-known member
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Alchymist
Well-known member
14-50 R & P are standard 240 v RV. The 120v outlets are 3 pin 30 amp.
Highbeam
Well-known member
It would have to be a huge RV, think motorhome with dual AC units. Normal RV plugs are the 30 amp 120 volt type with 3 prongs.
Alchymist
Well-known member
30 amp 120v RV (not shown above):
http://www.lowes.com/pd_246872-1571...1¤tURL=?Ntt=30+amp+rv+outlet&facetInfo=
http://www.lowes.com/pd_246872-1571...1¤tURL=?Ntt=30+amp+rv+outlet&facetInfo=
Alchymist
Well-known member
Many of the newer RVs are coming with the 50 amp service, even if not equipped with 2nd air or washer/dryer.
rancherbill
Well-known member
I think it is intended to plug a generator into the house wiring.
Alchymist
Well-known member
That was my next guess - it is located where you could easily set the generator outside the door and not have to worry about CO poisoning.
This is a really great reference - thanks
zcar751
Well-known member
It a 240 outlet, code requires a neutral and a ground with the two hot wires. Check your panel to see what 240 breakers you have. Shouldn't take to long to track it down.
Based on the location, my guess, would be that was likely used for a an RV. But there are several things that might make use of such an outlet located outdoors, a larger kiln comes to mind for one. I have not seen any welding equipment that uses a receptacle of that configuration. I cannot imagine anyone actually installing such an outlet for generator hookup when it would be just as easy to install an inlet. But if the outlet is already there for other purposes I can easily imagine someone using it for emergency generator hookup.
ishiboo
Well-known member
Nope. RVs typically use those flat-blade plugs as pictured, marine typically uses twist-locks.
Spudland_Dave
Well-known member
Backfeeding is a merely a "Bonus"
You ever see a Miller Trailblazer or other Welder/Gen? Most have 14-50, and thusly a lot of portable type welders go with the 14-50. All 4 of my welder outlets are 14-50.
Highbeam
Well-known member
Backfeeding is a merely a "Bonus"
You ever see a Miller Trailblazer or other Welder/Gen? Most have 14-50, and thusly a lot of portable type welders go with the 14-50. All 4 of my welder outlets are 14-50.
My welder plugs are all the standard 6-50 three prongers but I did run 6/3 so if I ever get a fancier wire feed that needs that 14-50 I can swap the plug in.
People don't like to install male ended inlet plugs for gensets because that is then all you can use it for. Also, unless you have a proper interlock, it is possible to energize the male prongs. I have a male genset inlet plug and more than one person has thought it odd. I couldn't convince them to stick their fingers on the prongs!
Went back today and checked the panel - it is set up for an emergency generator - breaker is off
All Class A's are 50 amp service these days......!
Spudland_Dave
Well-known member
My Maxstar has a 6-50 on it...if it weren't a factory plug (Miller MVP) I woulda put a 14-50 on it long time ago.
I too ran 6-3 to all my welder outlets (Ran 8-3 to the compressor shut off) THOUGHT about putting a 6-50 on one of them but then I figured, I ran the 6-3, may as well use it, PLUS my house garage has had a 14-50 all along for the generator reason. I've already got a handful of adaptor cords.
I will say there's a been a few times where I liked having 50A-110v.
Not very safe.