PowerTIG 255EXT

In stock
TIG Welders

The PowerTIG 255EXT is a digital inverter based welder that delivers exceptional power and performance. The PowerTIG 255EXT is competitive in performance when comparing feature to feature against the competition such as memory, pulse and wave forms. When you compare additional features the welder offers, such as advanced AC pulse and hot start and arc force control for the stick function, the PowerTIG 255EXT really stands out.   Advanced Pulse is a new feature introduced on the digital power TIG units which improves top and low end performance on aluminum.   It can be set up to increase penetration on thick aluminum up to 25% over what is traditionally accepted as the maximum limit for the maximum output of the welder.   Two "Easy Start " modes also add to the versatility of the welder while keeping operation simple. The stick welder features hot start time, hot start intensity and arc force control adjustments.  New features that have been recently added are the &nbsp spot weld timer feature that allows the operator to make consistent spot welds when tacking up or welding sheet metal.  The 255EXT also has a more convenient way to purge gas and set gas without initiating arc flow with a dedicated purge button.   Most importantly the PowerTIG 255EXT operates on 120V or 240V.  Maximum output during 120V operation is 150Amps for TIG, and 120Amps for stick.

(water cooler sold seperately)

More Information
Features & Benefits
Features & Benefits:

  • New Bezel and stackable feature!
  • Digital microprocessor control
  • IGBT Power Modules increase reliability and performance
  • True low amp operation down to 3 amps DC and 5 amp AC
  • 2T/4T/ Pedal operation modes with additional 2T/4T mode for torch amptrol operation.
  • Wave form control in AC provides 4 wave forms: Sine, Triangular, Soft Square and Advanced Square Wave
  • New High Frequency  design reduces maintenance issues and improves start reliability
  • No hidden menus to access or complicated set up routines
  • Simplified menu design allows settings to be quickly selected and adjusted
  • Easy Start Up feature in AC or DC modes to make setup quick and easy for the beginner, or the advanced user
  • Pulse up to 500Hz in DC, 250 Hz AC
  • 10Hz Advanced AC Pulse mode improves penetration on thicker metals, and can reduce warping and burn through on thinner metals
  • Arc force control, Hot start time, Hot start intensity settings for Stick welding to improve performance
  • VRD function to help reduce chance of shock or electrocution in areas where a VRD is required or needed for stick welding
  • 9 programmable channels to save favourite settings
  • #20 water cooled included (water cooler sold seperately)
  • Built in 240V receptacle for WC375 Water Cooler
  • NOVA Foot Pedal
  • Full time fan for maximum duty cycle operation
  • 120V/240V operation
  • Spot Weld Timer
  • Unit Dimensions: 23" x 9.5" x 18"
What's Included

Standard Equipment:

  • 7.5m Everlast #20 Series (water cooled) TIG torch with 35 DINSE style connectors and torch switch for 2T/4T operation
  • 7.5m Everlast #9 Series (air cooled) TIG torch with 35 DINSE style connectors  and torch switch for 2T/4T operation
  • Heavy Duty Stick electrode holder with 3m cable and 35 series DINSE style connectors
  • Heavy Duty Work clamp with 3m Cable and DINSE style connectors
  • NOVA Foot Pedal
  • Everlast Argon Regulator
  • 240/120V Pigtail Adaptor
  • Basic Consumable Starter Kit (Tungsten not included)
  • 1.8m Power input cable

Tech Specs

Tech Specs

IGBT Type: 
Module IGBT
Inverter Type: 
Output Type: 
Max Rated TIG Amps: 

240V: 250A

120V: 150A

Max Rated Stick Amps: 

240V: 225A

120V: 120A

TIG Amps @ Rated Duty Cycle: 


  • 150A/16V @ 60% Duty Cycle/ 40° C
  • 120A/14.8V @ 100% Duty Cycle/ 40°C



  • 250A/20V @ 60% Duty Cycle/ 40º C
  • 200A/18V @ 100% Duty Cycle/40ºC


Stick Amps @ Rated Duty Cycle: 


  • 120A/24.8V @ 60% Duty cycle/40° C
  • 90A/23.6V @ 100% Duty Cycle/ 40° C


  • 200A/ 29V@ 35% Duty Cycle/ 40°C
  • 160A/27V @ 60% Duty Cycle/ 40º C
Max Inrush( I1MAX )Amps: 
  • @110V: 38A
  • @220V: 38A
Maximum Rated (l1EFF) Input: 
  • @110V, 30A@220V, 30A
70V/VRD, 24V
TIG Output Range DC: 
  • 120V: 3A-150A/10.1V-16V
  • 240V: 3A-250A/10.1V-20V
TIG Output Range AC: 
  • 120V: 5A-150A/10.2V-16V
  • 240V: 5A-250A/10.2V-20V
Stick Output Range DC: 
  • 120V: 20A-120A/20.8V-24.8V
  • 240V: 20A-200A/20.8V-29V
Stick Hot Start Amps: 


Stick Function: 
Adjustable Arc Force Control
Stick Hot Start Type: 
Adjustable Hot Start
Stick Hot Start Time: 

0-2 Seconds

6010/Cellulose Capable: 
Yes(Short Arc)
Minimum Amp DC TIG Start: 


Minimum Amp AC TIG Start: 


TIG Start Type

HF and Lift Start

Start Amp Range: 
  • DC:  5A-250A
  • AC:  5A-250A
End Amp Range: 
  • DC:  3A-250A
  • AC:  5A-250A


Upslope Time: 

0-25 Seconds

Down Slope Time: 

0-25 Seconds

Preflow time: 

0-25 Seconds

Post Flow Time: 

0-50 Seconds

TIG Pulse: 
Standard DC Pulse Frequency: 

.5-500 Hz

Standard AC Pulse Frequency: 


AC Advanced Pulse Frequency: 


Pulse Time On (Duty Cycle): 


Pulse Amp Range: 


AC Frequency (Hz): 


AC Balance Range: 


AC Wave Forms: 
  • Advanced Square
  • Soft Square
  • Triangular
  • Sine
Remote Control: 
2T/4T with Torch Amptrol settings
Foot Pedal: 
Minimum Maxmimum



  • Weld steel to a maximum of 3/8" single pass (240V)
  • Weld steel to a maximum of 1+" multi-pass (240V)
  • Weld aluminum to a maximum of 3/8" single pass (240V)
  • Weld aluminum to a maximum of 1+" multi-pass (240V)
  • Weld steel to a maximum of 3/16" single pass (120V)
  • Weld steel to a maximum of 7/16" multi-pass (120V)
  • Weld aluminum to a maximum of 3/16" single pass (120V)
  • Weld aluminum to a maximum of 3/8" multi-pass (120V)
  • Weld to a minimum of .004" Steel
  • Weld to a minimum of .005" Aluminum


  • Weld with a minimum of 1.6 mm (1/16") diameter electrode
  • Weld with a maximum of 4.8 mm (3/16") diameter electrode
Stick electrode maximum size is ultimately dependent upon type/class of electrode and manufacturer's recommendation.
Optional Equipment

Optional Equipment:

  • Everlast Series Rotating Head TIG Torches
  • Everlast Series Slim Line Flex Neck Series
  • Everlast Series ProFlex Series
  • Amperage Slide Control
  • WC375 Water  Cooler
  • ProCart
  • Welder Cover


Product Notes:

For generator use:  Use only generators that are certified as "clean power" by the manufacturer.  This means that the unit has less than 5% THD (total harmonic distortion)

(water cooler sold seperately)

French manual currently NOT available. English Manual can be downloaded online.

Disclaimer: Units and accessories may not be exactly as pictured. French manuals currently NOT available. English Manual can be downloaded online.