FEMEROL MIG 250PRO Multi-Process Welder: up to 250 A, 110/220 V

What it welds

The FEMEROL MIG 250PRO Multi-Process Welder is a multi-process with a maker-stated output of up to 250 amps on 110 or 220-volt input.

At its top output of 250 amps, Miller's 1-amp-per-thousandth rule points to about 1/4 in of steel per pass. Where the rule comes from.

The listing doesn't give a duty cycle with its amperage, which makes long beads hard to plan; the rating plate or manual should state it. Why it matters.

Processes, per the maker: MIG, Gasless Flux Core. Check which torches and guns come in the box; a TIG torch or spool gun is often extra. Process guide.

Dual-voltage input gives portability on 120 volts and full output on 240; the maker's ratings for each input differ. 120 V vs 240 V.

Eye protection: OSHA's minimum is shade 10 for most of this machine's range (shade 10 for stick above 160 A). Full table.

Also on the listing: a weight of 32.6 lb.

Is it the right machine for the job?

Buy it for

A shop that does a bit of everything
Steel to about 1/4 in per pass

Skip it for

Steel much past 1/4 in in one pass

What it does well, where it falls short

Does well

Up to 250 A output
Dual-voltage input
Multi-process

Falls short

Duty cycle not stated with amps
Torches may be extra

Power and setup notes

Ratings are the maker's own, stated under the maker's conditions. Follow the manual, wear eye protection of at least OSHA's minimum shade, keep combustibles away, ventilate, and have a licensed electrician install new circuits.

Rated output and specs

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model number	MIG 250PRO	Retailer
Product weight	32.6 lb	Retailer
Power	dc	Retailer
Output range	250a	Retailer
Input power	110v/220v	Retailer
Processes	MIG, Gasless Flux Core	Retailer
Spool gun	spool gun compatible	Retailer
Shielding gas	Gasless	Retailer