LOTOS TIG200ACDC AC/DC TIG Welder: up to 200 A, 240 V

What it welds

The LOTOS TIG200ACDC AC/DC TIG Welder is an AC/DC TIG with a maker-stated output of up to 200 amps on 240-volt input.

Miller's starting rule, 1 amp for each 0.001 inch of steel, puts 200 amps at roughly 0.200 in of steel in one pass; thicker work means bevels and more passes. Run the amperage selector.

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

It's AC/DC, so it can weld aluminium as well as steel and stainless.

It needs a 240-volt circuit; have a licensed electrician install the receptacle the manual specifies. 120 V vs 240 V.

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 28 x 13 x 17 inches and a weight of 37 lb.

Is it the right machine for the job?

Buy it for

Aluminium and thin metal
Steel to about 0.200 in per pass

Skip it for

Steel much past 0.200 in in one pass

What it does well, where it falls short

Does well

Up to 200 A output
AC/DC for aluminium

Falls short

Duty cycle not stated with amps
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	TIG200ACDC	Retailer
Product weight	37 lb	Retailer
Dimensions (seller)	28 x 13 x 17 inches	Retailer
Material	200A ACDC	Retailer
Input power	240 V	Retailer
Output range	200a	Retailer
Processes	Stick/MMA	Retailer
AC / DC	ac/dc	Retailer