precision tig 225 how to.....question

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Just got a used lincoln precision tig 225.  It has a 220V three wire power plug.  I have wired it's 50A receptacle without a neutral, (two 110V legs and the Ground).  It also has a 110V aux receptacle on the machine for grinders etc.  Does it bond the 110V Neutral to ground internally?  Just want to get this right.  ThanksIce
Reply:Yes pretty sure if bonds the neutral to ground. Most welding plugs are wired this way.Millermatic 211Miller Syncrowave 350lx with cooler and tigrunner Thermal Dynamics cutmaster 811955 National Cylinder Gas O/A setup with original patina
Reply:What does the schematic show?Down load the owner's manual-anyway. There's bound to be some things in it thatwill help you, if you can spare the time.Blackbird
Reply:It's possible that the power for the auxiliary receptacle is derived internally from the welders circuitry. That's the way the other Lincoln units that had the aux power were. If so then the machine is the source, no neutral worries."The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:I doubt if neutral is bonded to ground in the machine. That would energize your ground back to the panel which is a violation of electrical code. wouldn't make sense to do it that way. I suspect it is more likely that the 240 is stepped down to 120 via a transformer.Miller Multimatic 255
Reply:http://www.lincolnelectric.com/asset...oln3/im895.pdfThe diagram on F-1 shows the current for the auxiliary outlet being stepped down from the transformer itself.   I'm no electrical expert though, maybe someone else can have a look-see?
Reply:Ok it sounds like everything will be fine, as long as the three prong plug is wired correctly.  two lives and a ground.....