Wiring 650 cutmaster

[Planet X]

Help Miller changed website and the online service manual for the 650 cutmaster no longer there for my viewing pleasure does anyone have the pdf file?

Ok Miller guys I bought a blue welder albeit used ,but its blue and I have no owners manual telling me how to hook this thing up to single phase power. This machine is both 3-phase/single phase capable I need single phase hook up instructions.

I tried guessing red/black hot legs and green ground with white not used, but no go.

I will order the manual from Miller, but that will take time I really would like try this sucker out.

Thanks for any help.

[Scott V]

Planet x,drop the red leg for single phase.Black,and white power,green ground.

[Planet X]

Originally posted by Scott V
Planet x,drop the red leg for single phase.Black,and white power,green ground.

Thanks.

I found some info on a powcon unit 300st (something like that) and they said ;
"Red do not use"
"white hot"
"black hot"
"green neutral" " do not hook anything to the ground connector for single phase". It is this no "ground" thing that has me confused is thinking it must be some 3-phase to single phase thing.

I have a 50 amp surface mount , but it is set up ground/hot/hot. Granted the 650 is not a powcon (looks like one) , but I will try your suggestions ,.

Are you running your Powcons single phase and how do you have those hooked up?
Thanks for the speedy reply.

[Scott V]

I have four 3/1 phase machines,and they all hook up the same.My Esab plasma hooks to 3 phase the same way,and my Thermal hooks up that way,and so does my Mk2000a.My friend at the welding store hooks all his 3/1 phase to single phase by dropping the red lead,and using the rest.I did not have a manual for the Powcon,so I don't Know about that one.The ground,and neutral are bonded at the meter so I don't see the big deal.Maybe Rock could figure that one out,but hook yours up just like I said.I would want the best ground you can find.My inverter have not blown up yet.and I did have my 50 amp setup wired like that for a while with no effects,until I figured It was backwards,of course I didn't have a Powcon at the time.Maybe the mosfets in the Powcon don't like something with it set up that way?All a guess on that.

[deere_x475guy]

I am a little disappointed that they dropped the manual. That is one of the considerations that I thought was a big plus as far as web support goes over the Hypertherm and Thermadyne machines....

Come on Guys....put that stuff back up here!!!!!!!!!!!!

Bob

[Planet X]

Originally posted by Scott V
Planet x,drop the red leg for single phase.Black,and white power,green ground.

Thanks.

[Scott V]

Wonderful,

Ok get to work!I used mine today instead of drilling some monster holes,too cool.I like having 70 amps sometimes.I would like the 90 amp model,but this will have to do.I mostly run it at 40 to 50 amps.

I am glad yours works.

[Sberry]

This is for Scott,,, Where would be the best ground you could find for that machine? (I do know the answer,, just checking)

[Scott V]

Boy,you got me there.I kind of confused about the Powcon thing,and I think Rock should answer that.I am not a EE so I should not really answer that one.I was just Knew he had the wrong hot leg.All my machines go to the ground,which is drove right into the ground back at the meter where every thing is bonded together,including the neutral.Thats the way the codes are here.

[Sberry]

For our purposes of equipment grounding we want a path back to the neutral bar at the point of service entrance and you are right, it is to be bonded with the ground stake there too. The stake in the ground does nothing for shorts or faults. It is there just to neutralize potentials between objects, buildings and what we are standing on. The circuit breaker protects against overcurrents and shorts or faults when they are returned via the grounding conductor. The ground stake really doesnt have much to do with it, its for lighting strikes also. This is a bit of simple explanation but often we hear about ground rods and that isnt what is meant by grounding in the case of hookng up equipment. For equipment as welding machines it is hooking a frame wire back to the neutral bar at entrance. If it is on a subpanel the 4th wire will carry it back to N at entrance.