4 prong 220v to 3 prong 220v HELP!!

[Pennywise]

I’m not expert but I have played around over the years and what I learned is 4-prong allows both 220v & 110v out of the same receptacle & the 3-prong allows either or. If your welder requires both 110v & 220v at the same time you need 4-prong. 

most residential plugs: 
110v hot A or B+neutral+ground

220v hot A +hot B +ground 

110/220 hot A + hot B +neutral +ground 

you typically have 2 hot coming in your supply box. Start at the top breaker and call it A the next is B and so on. To get single phase 220v you need 1-A & 1-B & ground. 

 

[Jersey_Jeff73]

cool welder it will work with virtually any power source this is off millers website

https://www.millerwelds.com/files/owners-manuals/O2240AF_MIL.pdf      see page 26 use white and black wires for your two hots and a ground wire tape the red wire back not used





Weldable Metals


Aluminum
Specialty Metals
Stainless Steel
Steel




Input Voltage


110/115/120 V
208 V
220/230/240 V
380/400 V
460/480 V




Input Phase


1- and 3-Phase

 

[J Alper]

I have the same welder, 

Super simple 

you will need 2 power wires, that is your 220V, both the flats are 110V, 

the center almost round is the ground wire, that will will go to the ground on the box,

DO NOT USE a neutral wire 

Just 2 hots and a ground  

 

[Chingon619]

I have the same welder, 

Super simple 

you will need 2 power wires, that is your 220V, both the flats are 110V, 

the center almost round is the ground wire, that will will go to the ground on the box,

DO NOT USE a neutral wire 

Just 2 hots and a ground  

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