Everlast CYCLONE 312i MIG Welder: up to 315 A, 240 V

What it welds

The Everlast CYCLONE 312i MIG Welder is a MIG / gas with a maker-stated output of up to 315 amps on 240-volt input.

Miller's starting rule, 1 amp for each 0.001 inch of steel, puts 315 amps at roughly 5/16 in of steel in one pass; thicker work means bevels and more passes. Run the amperage selector.

Duty cycle, per the maker: 35% at 315 A, 60% at 250 A. A 35% rating at 315 A means roughly 3.5 minutes on and 6.5 to cool at that output. Check it against your work.

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

Plan a 240-volt circuit sized as the manual states before it arrives. 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: a weight of 67.8 lb.

Is it the right machine for the job?

Buy it for

Clean steel welds indoors
Steel to about 5/16 in per pass

Skip it for

Steel much past 5/16 in in one pass

What it does well, where it falls short

Does well

Up to 315 A output
35% duty at 315 A

Falls short

Needs a 240 V circuit

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	CYCLONE 312i	Retailer
Product weight	67.8 lb	Retailer
Power	ac	Retailer
Input power	240 V	Retailer
Output range	315a	Retailer
Duty cycle	35% at 315A, 60% at 250A	Retailer