230 single phase
 

ok i know this has been covered somwhere but i cant find it so help me out. we got a new 230 welder but my dumb ass didnt realize that its not the same as the plugs we have in the shop for the compressor, etc....anyone have info on this? is it as simple as a new plug or is there some major re-wiring that needs to be done. i think the plug on there is the "dryer" plug type

Re: 230 single phase
 

Just get the same plug as your shop as long as its 230 single phase and make sure you check the breaker its on. The plug configuration is an indicator of the amp draw in most cases.

Re: 230 single phase
 

220 is 220 is 220 in the US. 110v = a hot, a neutral & a ground.
220v = a 110v hot, another 110v hot & a ground.

All you gotta do is put a new plug on it. Just make sure it's rated for the correct amperage! :)



If you wanna blow $40, and you are completely unable to remove the welder's plug. (Which would be stupid!) You could buy the male plug to fit your current female (outlet). Wire it to a female plug meant for your current welder's plug. There's your quite expencive plug adapter.

Re: 230 single phase
 

hmm well i just checked the box and those outlets have like a double-breaker on them with each one labeled 20...so does that mean that those are 40 amp...or just 20? Either way the other ---- that was plugged into them was labeled 220v or 230v single phase. The welder says it needs 21.7 amps to run at its rated output, would it still be fine running on 20 if i dont push it to its limits? sorry im an electrical noooob.

Re: 230 single phase
 

It's 20 amps.
Aslong as the wiring & outlets are also wired to handle atleast a 20amp load. You'll be OK.
Modern inverter welders ramp their current draw up in a way that you can normally exceed the amount a breaker, or a slow blow fuse is rated for. Older transformer welders. It can be abig crap shoot. You'll blow a working 20amp breaker drawing 25amps through it, where you may draw 27amps just fine on a better high end inverter tig machine on the same breaker.


Just hook your ground up & then hook the hots where ever. Then run the thing. If the walls catch on fire, or the outlet melts... The wiring & outlets are not wired to code. If the breaker trips, reset it & cut the current down a smidge. You'll be just fine!

Re: 230 single phase
 

Honestly why the ---- do they make about 15 differnent ------- 220v plugs? Wiring 220v welders can be a bitch when the plugs don't match but the 220v is definatly worth having.

Re: 230 single phase
 

LoL! Who knows. Make sure you always have the gold plug ones instead of the aluminum ones tho. They're 15amp.
Best I can tell you, is some plugs must be a locking 3 prong, or locking 4 prong type.

Then you have different types of plugs for the common amperage ratings. 15 20 30 & 40amps are all different plugs.




Unlike 110 they do have to be different because hey want to be very sure that you can't put a 220v plug in a 110v outlet!
And like, 15 & 20 amp plugs have a (how do I temr it?) vertical prong & a horizontal prong. While 10 amp 110v's have a pair of vetical prongs.


It's just saftey stuff.

Re: 230 single phase
 

i think im gonna make up an adapter since id like to keep this thing under warranty for a bit (millermatic 180)

Re: 230 single phase
 

OK, but for the cost of the phonecall. Why don't you call the seller & ask if re-plugging the unit will affect the warranty.

Re: 230 single phase
 

From Miller's site:
Input Power

* Requires 1-Phase Power
* 230 V, 21.7 A, 60 Hz

20A will be fine, just dont crank it all the way up. Check and make sure that your 20A breaker is using the correct Romex wire, should be 14/3. You DON'T need 4-wire for 20A 240v, unless things have changed recently.

Build a converter cable, and I'd use a 6L-20P/6L20R for the cable end, and for the receptacle. Those are locking (twist-lok) connectors, so it'll be hard to pull the cable out of the wall.