4 prong 50amp to 3 prong 50amp

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Both my welders use a 3 prong plugs. On nice days it would be nice to work under the carport, Where I have a 50 amp 4 prong plug. I have a 4 prong rv cord that Id like to put a 3 prong female plug on. Can someone explain to me how I can wire this?
Reply:It is apples to apples except the 3 prong will drop the neutral.4 wire is 2 hots a neutral and a ground.3 wire is just the 2 hots and ground but no neutral.Last edited by danielplace; 06-03-2021 at 10:10 PM.
Reply:Thank you
Reply:If you don't want to cut off the RV connector  you can buy adapters.RVGUARD Welder Adapter Cord 12 Inch, NEMA 14-50P to 6-50R, 50 Amp Welder Adapter, Greenon Amazon, $30.00Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:The cord I want to use is the twist lock style.
Reply:Heres the plug Attached Images
Reply:Originally Posted by MillwrightdudeThe cord I want to use is the twist lock style.
Reply:Originally Posted by MillwrightdudeHeres the plug
Reply:Not really
Reply:Originally Posted by MillwrightdudeNot really
Reply:This is what I have ordered Attached Images
Reply:I went through the same thing with my PTO powered generator, but the 4 prong plug on it wasn't a twistlock. I needed an adapter in a hurry one day to use the buzzbox in the field so I put a 3 prong plugin on a foot of heavy cord with a 4 prong plug in. I've used it numerous times over the years and it's worked well. As mentioned above all you are eliminating is the bare copper ground.... the green, white and black going into your welder cord are still hooked up. I forget offhand whether the white wire goes to the skinny side of the plug or the wide one, but you can usually tell by the color of the screws.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:Originally Posted by whtbaronI went through the same thing with my PTO powered generator, but the 4 prong plug on it wasn't a twistlock. I needed an adapter in a hurry one day to use the buzzbox in the field so I put a 3 prong plugin on a foot of heavy cord with a 4 prong plug in. I've used it numerous times over the years and it's worked well. As mentioned above all you are eliminating is the bare copper ground.... the green, white and black going into your welder cord are still hooked up. I forget offhand whether the white wire goes to the skinny side of the plug or the wide one, but you can usually tell by the color of the screws.
Reply:Ahhh.... I used a short chunk of household type wiring because I didn't need it to be flexible.... it was more than 25 yrs ago so my memory might be a little sketchy...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:Originally Posted by whtbaronI went through the same thing with my PTO powered generator, but the 4 prong plug on it wasn't a twistlock. I needed an adapter in a hurry one day to use the buzzbox in the field so I put a 3 prong plugin on a foot of heavy cord with a 4 prong plug in. I've used it numerous times over the years and it's worked well. As mentioned above all you are eliminating is the bare copper ground.... the green, white and black going into your welder cord are still hooked up. I forget offhand whether the white wire goes to the skinny side of the plug or the wide one, but you can usually tell by the color of the screws.