Hobart 140EZ MIG Welder: up to 140 A, 120 V

What it welds

The Hobart 140EZ MIG Welder is a MIG / gas with a maker-stated output of 30 to 140 amps on 120-volt input.

Miller's starting rule, 1 amp for each 0.001 inch of steel, puts 140 amps at roughly 0.140 in of steel in one pass; thicker work means bevels and more passes. Run the amperage selector.

The maker's thickness claim reads "up to 3/16 inch". 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: Flux-Core, Spool Gun. Most multi-process machines' TIG is DC lift-arc, so no aluminium unless AC is stated. Choosing a process.

It runs solid wire under shielding gas for the cleanest wire-feed welds; most machines like it also run flux-core wire outdoors.

Household 120-volt power caps its output; check the circuit size the manual asks for. What input voltage changes.

Use a lens of at least OSHA's minimum shade for the current: shade 10 or darker for typical MIG work here. Shade chart.

Also on the listing: dimensions of 24 x 18.5 x 12.5 inches and a weight of 55.9 lb.

Warranty, per the listing: Hobart 5/3/1 Industrial Warranty - Five-year warranty on transformers, stabilizers and main rectifiers; three years on generators, PC boards and drive systems; and one year on guns (MIG, plasma and TIG torches).

Is it the right machine for the job?

Buy it for

Clean steel welds indoors
Sheet metal to about 0.140 in

Skip it for

Steel much past 0.140 in in one pass

What it does well, where it falls short

Does well

Up to 140 A output
Runs on household 120 V

Falls short

Duty cycle not stated with amps
120 V caps output

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	140EZ	Retailer
Product weight	55.9 lb	Retailer
Dimensions (seller)	24 x 18.5 x 12.5 inches	Retailer
Power	dc	Retailer
Warranty	Hobart 5/3/1 Industrial Warranty - Five-year warranty on transformers, stabilizers and main rectifiers; three years on generators, PC boards and drive systems; and one year on guns (MIG, plasma and TIG torches).	Retailer
Output range	30-140a	Retailer
Input power	120v	Retailer
Max steel (maker)	up to 3/16 inch	Retailer
Processes	Flux-Core, Spool Gun	Retailer
Spool gun	Spool Gun Ready	Retailer