At work we run mig welders , a 275 amp and three 250 amp welders on 32 amp single phase power.
We also run a 175 amp lincoln mig welder on 10 amp single phase power (with extension cords mostly) no problem.
My last job we had a 195 amp single phase mig welder running on 10 amp supply, also no problem. All these welders running Argoshield gas.
If you're running gas less with flux core wire, you can run less amps.
flashg
So how can you tell if the tip is worn out? Its original. Actually Ihave 3 phase. But iI'll never get the practice to be any good. Love it for just being able to glue bits together. Decent welds go to a professional. I got a mate to give me a lesson. He sneered at the gassless. Then proceeded to surprise himself with a passable weld on 3mm plate. I managed to make a bird less constipated.
Don't you look at my accountant.
He's the only one I've got.
If the tip is badly worn, the wire will be rather loose passing through and "contact" between wire and tip can be poor causing an inconsistent weld.
Sometimes when a tip has seen a lot of heat over time, the hole can close a little causing a strangling effect on the wire, causing wire feed problems as described.
Remove tip and drill with a number drill as close as possible to correct wire size. Or buy a new tip. They're cheap enough if you can find one for a no name brand.
Hope this helps.
flashg
For those that weld, are self taught or/and have no proper training.
Please keep your skin covered at all times while welding.
The light is infared and ultraviolet and causes skin cancer. You will get sunburnt from it, but you won't tan.
We wear protection when we ride.
Wear protection when you weld.
You'll be so glad you did in the long run.
flashg
Take a look at Inverter welders. I bought one a few years ago before I upgraded my garage. I ran it on a 10amp breaker. Admittedly I don't ever weld anything bigger than 3mm plate and the majority is stop start sheet metal work. They have a much better power factor and they don't draw so much current on startup as a transformer welder.
I love the smell of twin V16's in the morning..
Put in a new one and see if it welds better...DUH.
You can get reasonable results with a gas less unit. All it takes is a correctly set up machine and practice.
The initial cost of a (say) Hobart with a gauge and bottle might seam high but if you use it for more than the occasional weld it soon pays for itself as the solid wire is way cheaper than flux cored. I used to pay around $15 for a 2lb roll of flux core, I now pay around $12 for a 11lb roll of solid er70s. A gas refill (5 ft high bottle) is around $40 and lasts for ages.
Tip hole is loose as. OK Ive learnt summit. Cheers.
Gas companies have it sewn up tight here with exchange only bottles and yearly contracts bit like phone plans. Hobbiests are screwed, which leaves those disposable cans. Meh, don't use it enough to justify. I'd upgrade my lathe first.
Just need to find some liner. I've coiled the first half of the conductive cable so I'll run the liner section 1\2 the std length in straight as possible line. Long cord was always a pain and causes more wire drag. Only have to reach my vice.
Don't you look at my accountant.
He's the only one I've got.
Not quite.
Ezi-Swap cylinders have no monthly rental and you only pay when you swap for a full cylinder, just like LPG at most servos these days. Initial outlay is a few hundy but the cylinder's yours to sell and there's no fixed contracts.
Most decent inverter MIG machines run okay on Co2, except down real low on panel steel. Get Co2 cylinders filled at fire extinguisher joints for around $50.00. The disposable bottles are shit, maybe use for Argon but fuck that for mixed gas.
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