Sunstac TIG-250 TP ACDC AC/DC TIG Welder: up to 250 A

What it welds

The Sunstac TIG-250 TP ACDC AC/DC TIG Welder is an AC/DC TIG with a maker-stated output of up to 250 amps.

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.

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

Use a lens of at least OSHA's minimum shade for the current: shade 8 or darker for typical TIG or stick work here. Shade chart.

Also on the listing: a weight of 29.8 lb.

Is it the right machine for the job?

Buy it for

Aluminium and thin metal
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
AC/DC for aluminium
Pulse: Pulsed

Falls short

Duty cycle not stated with amps

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	TIG-250 TP ACDC	Retailer
Product weight	29.8 lb	Retailer
Size	250A AC/DC Pulsed TIG	Retailer
Material	metal	Retailer
Power	ac_dc	Retailer
Input power	110220 V	Retailer
Output range	250a	Retailer
AC / DC	ac/dc	Retailer
Pulse	Pulsed	Retailer