AC-225 plug wiring help

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I need to cut off the plug on the AC-225 and install a generator 4-prong twist-lock.  Here is the picture of the new plug.  At 12 o'clock is the bent prong with the green nut, 6 o'clock is a brass nut, 3 & 9 o'clock is silver.  On the AC-225 plug there is the round ground prong at top, then a narrow prong and a wide prong.  WHAT DO I DO?????  The cable from the ac-225 is a 3-wire flat cable. Attached Images
Reply:Did I mention that I need this fixed TONIGHT?!?!?!  I have to use it in the morning.  Please help.
Reply:Ok not seeing the plug well it's hard to say. You will have 2 hots, one neutral and a ground on the power side. The green screw shows which lug is ground. That one you can ignore for the 3 wire purpose. USUALLY a neutral is a silver colored screw, the hots, black or dark brass. It sound like the 2 silber ones on yours are probably hots instead, the brass one neutral. The hots are usually at 180 deg to each other with the neutral and ground in between, also at 180 deg to each other. I would check the female outlet with a volt meter to double check which are hots. You will get 220v across the 2 hots, 120v hot to neutral or ground.As far as on the machine, the middle prong was the neutral, and the 2 outer prongs the hots, I have no idea which wire went to what prong. You'll have to figure that out yourself from the plug.Hope this helps and be careful.Last edited by DSW; 06-11-2009 at 10:11 PM.
Reply:JC,Pretty much what DSW said.That bent prong is the ground (round prong on the original) and the two on each side are the 115v hots (wide and narrow flat prongs on the original).  The bottom one on the 4-prong would be used for the neutral IF a neutral were required for 115v circuits which it's not for your welder so it doesn't get used.To confirm, if the generator plug is wired correctly, you will have 115v between each side terminal and the bent prong ground (it's not a neutral) and 230v between both side terminals of the outlet.And again, your welder doesn't need it but you would also have 115v between each side terminal and the bottom neutral terminal (the one you're not using on the welder end) of the generator outlet.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:It's amazing what you can find with the "search" function!  While you guys answered this for me, thanks by the way, I was at the truck take'n care of it.  DesertRider33 answered the same question in this old post:http://weldingweb.com/vbb/showthread.php?t=27565I always wondered why that plug on the generator was marked 120/240.  So, I cut off the plug, took the middle wire, color-coded green, and put it to the green screw on the top of the new plug.  Put the other two wires on the to brass colored screws at 3 and 9.  Cranked it up and ran a bead!  Thanks for everyones help.  This should be a sticky in the Lincoln section.  Using the search button, I found that many, many other people have asked the same thing.
Reply:hey guys, just wired up my plasma cutter... thx to you guys.
Reply:Originally Posted by gofasterhey guys, just wired up my plasma cutter... thx to you guys.