Everlast PowerMTS 141Si – 140 Amp 120V MIG, DC TIG & Stick Welder

Three welding processes in one compact machine that runs on standard 120V power.
The Everlast PowerMTS 141Si combines MIG, DC TIG, and Stick welding in a portable multi-process package designed for home shops, garages, motorsports, farm repair, exhaust work, and mobile fabrication. With up to 140 amps of MIG and TIG output and 80 amps of Stick power, it provides practical all-around capability without requiring 240V electrical service.

The PowerMTS 141Si includes both High-Frequency and Lift TIG starting, automatic TIG gas control, separate MIG and TIG gas connections, and optional foot-pedal compatibility. It can also be configured for Flux-Cored wire or aluminum MIG welding with the proper optional accessories.

Why Welders Choose the PowerMTS 141Si

• Three Processes in One: MIG, DC TIG, and Stick welding from a single compact machine.
• Standard 120V Power: Operates from common household and shop electrical service.
• True TIG Capability: Includes both High-Frequency and Lift Start with automatic gas control.
• Portable Design: Compact digital inverter platform is easy to move between the shop and jobsite.
• Aluminum MIG Ready: Compatible with an optional spool gun or properly converted standard MIG gun.
• Flux-Core Capable: Use self-shielded wire with the correct optional drive roll.

Key Features

• 140 amp MIG output
• 140 amp DC TIG output
• 80 amp DC Stick output
• 120V input power
• All-digital CC/CV multi-process inverter design
• MIG, DC TIG, and DC Stick operation
• High-Frequency TIG Start
• Lift TIG Start
• 2T/4T trigger operation for MIG and TIG
• Optional TIG foot-pedal capability
• Automatic pre-flow and post-flow control
• Built-in TIG gas solenoid
• Separate rear gas connections for MIG and TIG
• Flux-Cored wire capability with optional drive roll
• Spool-gun capability for aluminum MIG welding
• Accepts both 4" and 8" wire spools
• Compact, lightweight design for portable use

What’s Included

• 15 Series MIG Gun with 10' Cable and Euro-Style Quick Connector
• 17 Series Air-Cooled TIG Torch with 12.5' Cable and 35 Series DINSE Connector
• TIG Torch Switch for 2T/4T Operation
• Stick Electrode Holder with 10' Cable and 35 Series DINSE Connector
• Ground Clamp with 6' Cable and 35 Series DINSE Connector
• Argon Regulator with Hose
• Starter TIG Consumable Kit
• Spare Contact Tip
• .023"–.030" Single V-Groove Drive Roll

Note: Tungsten electrodes, TIG foot pedal, aluminum spool gun, Flux-Core drive roll, and aluminum gun-conversion components are sold separately.

Ideal Applications

• Home and hobby shops
• Small fabrication shops
• Automotive garages
• Muffler and exhaust fabrication
• Portable repair
• Motorsports and trackside repair
• Farm and ranch maintenance
• General light fabrication

Recommended Materials

MIG:

• Steel
• Stainless steel
• Aluminum with an optional spool gun or proper liner and drive-roll setup

TIG:

• Steel
• Stainless steel
• Titanium

Stick:

• Steel
• Stainless steel

Important: This machine provides DC TIG output only and is not designed for TIG welding aluminum.

MIG Welding Capacity

• Minimum Steel/Stainless Thickness: Approximately 24 gauge
• Maximum Steel/Stainless Single Pass: Up to approximately 3/16"
• Maximum Steel/Stainless Multi-Pass: Up to approximately 1/4"

Actual welding capacity depends on wire size, shielding gas, joint preparation, welding position, operator skill, and application requirements.

Aluminum MIG Capability

For aluminum welding, choose one of the following setups:

• S100N MTS Spool Gun: Recommended for the most reliable aluminum wire feeding.
• Standard MIG Gun Conversion: Requires a polymer liner and the correct .035"/.045" U-groove drive roll.

• Minimum Aluminum Thickness: Approximately 14 gauge
• Maximum Aluminum Single Pass: Up to approximately 1/8"
• Maximum Aluminum Multi-Pass: Up to approximately 3/16"

TIG Welding Capacity

• Maximum Single Pass: Up to approximately 1/8"
• Maximum Multi-Pass: Up to approximately 1/4"

These TIG figures are suggested practical limits for sound welding technique. Actual results depend on joint design, material condition, operator skill, shielding gas, and application.

TIG Start & Control Options

• High-Frequency Start: Starts the TIG arc without touching the tungsten to the workpiece.
• Lift Start: Provides an alternate start method when high frequency is not preferred.
• 2T/4T Trigger Control: Supports short welds and extended welding without continuously holding the torch switch.
• Optional Foot Pedal: Allows remote amperage adjustment during TIG welding.
• Automatic Gas Control: Built-in solenoid manages shielding gas without requiring a valve-style TIG torch.

Stick Welding Capacity

• Minimum Electrode Diameter: 1/16"
• Maximum Electrode Diameter: Up to approximately 3/32"
• Recommended Electrode Types: Includes E6011, E7014, and E7018
• E6010 Capability: Not rated for E6010 electrodes

Maximum electrode size depends on the electrode type, brand, manufacturer recommendations, welding position, and application.

Flux-Core Welding

The PowerMTS 141Si can run self-shielded Flux-Cored wire when equipped with the proper optional Flux-Core drive roll and polarity setup.

Wire & Spool Compatibility

• Standard Wire Range: .023"–.030"
• Wire-Spool Capacity: 4" and 8" diameter spools
• Standard Configuration: Solid MIG wire
• Optional Configuration: Flux-Cored and aluminum wire

Generator Requirements

• Use only generators certified by the manufacturer as producing clean power
• Total harmonic distortion must be 5% or less
• Minimum recommended generator capacity: 4,500 surge watts

Using an undersized generator or one that does not provide clean power may damage the machine and affect warranty coverage.

Who Is the PowerMTS 141Si Best For?

The PowerMTS 141Si is ideal for welders who want MIG, TIG, and Stick capability from one compact 120V machine. It is a strong fit for home shops, garages, motorsports, exhaust repair, farm maintenance, and portable work where space and available electrical service are limited.

Frequently Asked Questions

Can the PowerMTS 141Si run on a standard household outlet?
Yes. It is designed for 120V input power.

Can it TIG weld aluminum?
No. The machine provides DC TIG output only. Aluminum TIG welding normally requires an AC TIG welder.

Can it MIG weld aluminum?
Yes. Aluminum MIG welding requires the optional S100N MTS spool gun or the proper polymer liner and U-groove drive-roll setup.

Does it include a TIG torch?
Yes. A 17 Series air-cooled TIG torch and torch switch are included.

Does it include a foot pedal?
No. The machine is foot-pedal capable, but the pedal is sold separately.

Can it weld Flux-Core wire?
Yes. Flux-Core welding requires the correct optional drive roll and polarity setup.

Can it weld with E6010 electrodes?
No. The PowerMTS 141Si is not rated for E6010.