Lincoln Electric Weld-Pak 225i Stick Welder: up to 225 A

What it welds

The Lincoln Electric Weld-Pak 225i Stick Welder is a stick inverter with a maker-stated output of 10 to 225 amps.

By Miller's rule of thumb of 1 amp per 0.001 inch of steel, 225 amps reaches about 0.225 in in a single pass. Amps by thickness.

The maker's thickness claim reads "up to 5/16" steel in a single pass". Makers often mean multiple passes or flux-core wire when a claim runs past the amps rule; the wording here says which.

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: Stick/TIG. Check which torches and guns come in the box; a TIG torch or spool gun is often extra. Process guide.

Eye protection: OSHA's minimum is shade 8 for most of this machine's range (shade 10 for stick above 160 A). Full table.

Also on the listing: dimensions of 18 x 10 x 15.5 inches and a weight of 25 lb.

Is it the right machine for the job?

Buy it for

Farm and structural repairs
Steel to about 0.225 in per pass

Skip it for

Steel much past 0.225 in in one pass
Aluminium

What it does well, where it falls short

Does well

Up to 225 A output

Falls short

Duty cycle not stated with amps
Slag cleanup

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	Weld-Pak 225i	Retailer
Dimensions (seller)	18 x 10 x 15.5 inches	Retailer
Product weight	25 lb	Retailer
Output range	10–225 amp	Retailer
Duty cycle	30% duty cycle at 225 amps	Retailer
Input power	Dual-Voltage	Retailer
Max steel (maker)	up to 5/16" steel in a single pass	Retailer
Processes	Stick/TIG	Retailer