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PowerTIG 255EXT



  • Lightweight
  • digital_display
  • igbt_equipped
  • 1_phase

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If you are looking to take your shop or business to the next level in TIG welding capability, the digital inverter-based PowerTIG 255EXT delivers exceptional power and performance at a budget friendly price.   In fact, the PowerTIG 255EXT not only has a long list of competitive features but also unique features that distinguishes it from the competition.

You'll find surprisingly competitive performance when comparing feature to feature against the competition such as memory, pulse and wave forms thanks to the digital microprocessor. When you compare the additional features and the price advantage the welder offers such as the advanced AC pulse and stick performance features such as hot start and arc force control , the PowerTIG 255EXT really stands on it's on.  Advanced pulse is a new feature introduced on the digital PowerTIG  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 Up" modes also add to the units versatility while keeping operation simple. The unit also excels as a stick welder featuring hot start time, hot start intensity and arc force control adjustments, making it a perfect welder for E6010 or E7018 welding.  Everything on the AC/DC pulse TIG welder has been carefully designed for maximum life and reparability down the road with componentized design and IGBT module components from name brand manufacturers.

This make diagnosis and repair a simple and easy process.  Several new features have been recently released.  The spot weld timer feature allows the operator to make perfect, consistent spot welds when tacking up or welding sheet metal.  The unit 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 150 Amps for TIG, and 120 Amps for stick.


PLEASE NOTE: This machine does not have a plug fitted. To achieve the maximum performance out of your Everlast Machine please ensure your current breaker and wiring/socket setup at your place of use is sufficient enough to achieve this. For example you may be required to upgrade your breaker to a 32A dedicated circuit to suit, therefore allowing you to achieve your machines full duty cycle. If in doubt please contact your local licensed electrician for more info prior to purchasing and please see terms and conditions/warranty for more information.

Manufactured and compliant with IEC/AS 60974.10, CE Guaranteeing your electrical safety and performance. INDUSTRIAL USE ONLY


Download PDF manual HERE

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  • Digital microprocessor control
  • Heavy-Duty 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
  • Heavy Duty 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
  • Built in receptacle for PowerCool 300 water cooler
  • Full time fan for maximum duty cycle operation
  • 120V/240V operation
  • Spot Weld Timer
  • 6010/Cellulose Stick welding capability


  • IGBT Type: Module IGBT
  • Inverter Type: Digital/Micro-controlled
  • Output Type: AC/DC TIG, DC Stick
  • Voltage/phase: DUAL VOLTAGE 120/240 1 PHASE
  • Max Rated TIG Amps: 240V: 250A
  • Max Rated Stick Amps: 240V: 200A
  • TIG Amps @ Rated Duty Cycle: @240V: 250A/20V @ 60% Duty Cycle/ 40º C - 200A/18V @ 100% Duty Cycle/ 40º C
  • Stick Amps @ Rated Duty Cycle: @240V: 200A/ 29V@ 60% Duty Cycle/ 40°C - 175A/27V @ 100% Duty Cycle/ 40º C
  • Max Inrush ( I1MAX ) Amps: @240V: 33.6A
  • Maximum Rated (I1EFF ) Input Amps: @240V: 27A
  • OCV: 70V/VRD: <24V
  • TIG Output Range DC: @240V: 3A-250A/10.1V-20V
  • TIG Output Range AC: @240V:  5A-250A/ 10.2V-20V
  • Stick Ouput Range DC: @240V:  20A-200A/20.8V-29V
  • Stick Hot Start Amps: 0-100%
  • Stick Function: Adjustable Arc Force Control
  • Stick Hot Start Type: Adjustable Hot Start
  • Stick Hot Start Time: 0-2 Seconds
  • 6010/Cellulose Capable: Yes
  • Minimum Amp DC TIG Start: 3A
  • Minimum Amp AC TIG Start: 5A
  • TIG Start Type: HF and Lift Start
  • Memory: Yes
  • 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: Yes
  • Standard DC Pulse Frequency: .1-500 Hz
  • Standard AC Pulse Frequency: .1-250Hz
  • AC Advanced Pulse Frequency: .1-10Hz
  • Pulse Time On (Duty Cycle): 3-100%
  • Pulse Amp Range: 5-95%
  • AC Frequency (Hz): 20-250Hz
  • AC Balance Range: 5-90%
  • AC Wave Forms: Advanced Square - Soft Square - Triangular - Sine
  • Remote Control: 2T/4T with Torch Amptrol settings
  • Foot Pedal: NOVA Foot Pedal



  • Weld steel to a maximum of 1/2" single pass (240V)
  • Weld steel to a maximum of 1+" multi-pass (240V)
  • Weld aluminum to a maximum of 1/2" 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 3/8" multi-pass (120V)
  • Weld aluminum to a maximum of 1/8" single pass (120V)
  • Weld aluminum to a maximum of 1/4" multi-pass (240V
  • Weld to a minimum of .004" Steel
  • Weld to a minimum of .005" Aluminum

TIG ratings based off of industry accepted standard practices for quality single and multi-pass welds.  AC advanced pulse, when adjusted properly can weld thicker than standard welders with 250 amps output and this is included in Steel and Aluminum maximum capacity statements.


  • Weld with a minimum of 1/16" diameter electrode
  • Weld with a maximum of 3/16"" diameter electrode (240V)
  • Weld with a maximum of 3/32" diameter electrode (120V)
  • E6010 performance may be limited on 120V

Stick electrode maximum size is ultimately dependent upon type/class of electrode and manufacturer's recommendation.


  • Single Phase 240v Digital Control Ac/Dc Tig Machine
  • W/I Wp-26f And Wp-9f 7.5m Super soft Red hose Torch
  • Yh20-3m Electrode Cable
  • 400a Australian Style Electrode Holder
  • Yh25-3m Earth Cable, American Style Brass Earth Clamp
  • 2m Pvc Gas Hose
  • FREE UPGRADED Nova Foot Control Pedal
  • Regulator.



  • Power Cool 300 Water Cooler
  • ProCart 330
  • Foot Pedal
  • Amp Control Slider
  • Welder Cover
  • NOVA Welding and Fabrication Table
  • NOVA Clamp and Tool Kit
  • Air-cooled 9/17/26 series TIG torches
  • Water-cooled 18/20 series TIG torches
  • Amp Control TIG torches
  • TIG Consumables Kits


If using with a generator, be sure that the generator is rated by its manufacturer as clean power output.  This means that the total harmonic distortion (THD) is less that 5%.  Use a generator capable of at least 9500 surge watts for 240V operation, and 4200 surge watts for 120V.