Product Overview
The Tomahawk Power TWG145A is a dual fuel engine driven welder generator designed for portable welding and onboard generator power in the field. Built with a rugged 7.5 HP, 192cc 4-stroke engine, this welder generator delivers up to 145 amps of DC inverter welding power and 5500 watts of peak generator output for contractors, farmers, ranchers, technicians, service trucks, and mobile repair professionals. With electric start, battery included, 120V receptacles, dual fuel gasoline or LPG propane operation, digital display panel, and a compact portable design, the TWG145A is built for welding, repairs, and essential power where shop electricity is not available.
Key Features:
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145 Amp Welding Output: Delivers up to 145 amps of smooth DC inverter welding power for stable arc performance and cleaner welds.
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5500 Watt Peak Generator Power: Provides reliable onboard generator power for compatible grinders, lights, power tools, and essential equipment.
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4.5kW Rated Power: Supports steady portable power for approved connected loads.
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Dual Fuel Operation: Runs on gasoline or LPG propane for flexible fuel options on remote jobsites, farms, ranches, and emergency repair work.
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7.5 HP 4-Stroke Engine: Rugged 192cc engine supports portable welding and power performance in demanding field environments.
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Electric Start: Electric starting helps get the unit running quickly without relying only on manual starting.
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Battery Included: Tomahawk lists the battery as included for electric start operation.
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Digital Display Panel: Multifunction display helps monitor amperage, voltage, overload protection, and oil alerts.
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120V Receptacles Included: Provides 120V AC power access for compatible tools, lighting, and jobsite equipment.
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Manual Arc Welding: Suitable for arc, stick, MMA, and TIG applications where the correct setup, material, and consumables are used.
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80% Duty Cycle: Supports extended welding performance within the rated duty cycle limits.
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Portable Field Design: Compact layout with never-flat wheels and telescopic handles helps with transport around service trucks, farms, workshops, and jobsites.
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2-Year Warranty: Backed by Tomahawk’s listed 2-year warranty with technician support and nationwide spare parts availability.
Technical Specifications:
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Model: TWG145A
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Product Type: Dual Fuel Engine Driven Welder Generator
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Brand: Tomahawk Power
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Part Number: TWG145A
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Color / Finish: Black
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Engine: 7.5 HP, 192cc, 4-stroke engine
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Engine Displacement: 192cc
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Fuel Type: Gasoline or LPG propane
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Fuel Capacity: 12L / 3.17 gal
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Rated Voltage: 120V
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Frequency: 60Hz
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Rated Current: 37.5A
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Rated Power: 4.5kW
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Peak Power: 5.5kW
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Welding Output: Up to 145A DC inverter welding power
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Minimum Amps: 145ADC / 33AAC
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No-Load Voltage: 65V
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Max Welding Wire Diameter: 4mm
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Max Weld Thickness: 4mm
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Duty Cycle: 80%
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Power Type: DC / AC
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Welding Processes: Manual arc welding
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Applications Listed: Arc, Stick, MMA, TIG
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Weldable Materials: Suitable for welding all metals as listed by Tomahawk; match welding process, filler, gas, and setup to the material.
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Electric Start: Yes
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Battery Included: Yes
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120V Receptacles Included: Yes
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Clamp Cable Length: 3m
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Electrode Cable Length: 3m
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Regulator and Gas Hose Included: No
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Spool Gun Included: No
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Weight: 110.2 lb / 50 kg
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Dimensions: 23.6" x 19.2" x 21.2"
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Warranty: 2 year
Package Includes:
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TWG145A Welder Generator: 145 amp dual fuel engine driven welder generator.
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Battery: Included for electric start operation.
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Clamp Cable: 3m clamp cable listed in specifications.
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Electrode Cable: 3m electrode cable listed in specifications.
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Regulator & Gas Hose: Not included.
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Spool Gun: Not included.
Applications:
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Arc, Stick, MMA & TIG Work: Supports listed welding applications when configured with compatible consumables, accessories, and materials.
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Construction Sites & Railways: Provides portable welding and generator power for repair, maintenance, and field work.
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Farms, Ranches & Corrals: Useful for fencing, gates, corrals, farm equipment, ranch repairs, and mobile maintenance jobs.
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Service Trucks & Maintenance Crews: Helps technicians cut, tack, weld, grind, and power essential tools from one portable unit.
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Municipal Pipe Networks: Suitable for approved repair and maintenance applications where portable welding power is needed.
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Professional Oil & Gas Pipeline Repair: Tomahawk lists oil and gas pipeline repair as an application; always follow jobsite, welding procedure, and safety requirements.
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Workshops: Adds portable welding and generator capability for shops, mobile repair teams, and fabrication support.
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Chemical Plants, Power Plants & Steel Plants: Useful for approved maintenance and repair applications when operated according to site safety rules.
Operation & Use Notes:
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Welding Setup: Follow Tomahawk’s operating instructions for grounding, cable connection, electrode selection, amperage settings, and safe welding procedures.
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Dual Fuel Use: Operate using gasoline or LPG propane as instructed by Tomahawk. Follow all fuel storage, connection, leak-check, and ventilation requirements.
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Load Management: Do not exceed the 4.5kW rated power, 5.5kW peak power, 120V receptacle rating, or connected equipment limits.
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Duty Cycle: Operate within the listed 80% duty cycle and allow cooling time as required to avoid overheating.
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Material Compatibility: Match the welding process, electrode, filler, shielding gas if applicable, and settings to the material being welded.
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Welding Safety: Use proper welding PPE, including welding helmet, gloves, protective clothing, eye protection, and appropriate ventilation.
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Fire Safety: Keep sparks, slag, and hot metal away from flammable materials, fuel, dry grass, solvents, and other ignition hazards.
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Outdoor Use Only: Gas-powered welder generators must be operated outdoors in a well-ventilated area away from doors, windows, vents, and occupied spaces.
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Carbon Monoxide Safety: Never operate a gas engine indoors, in a garage, basement, crawlspace, enclosed trailer, or partially enclosed area because of carbon monoxide danger.
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California Proposition 65: This product carries a California Proposition 65 warning.
Frequently Asked Questions
Q. What is the Tomahawk TWG145A used for?
The TWG145A is used for portable welding and generator power for construction sites, farms, ranches, service trucks, maintenance crews, workshops, railways, and field repair applications.
Q. How many amps is the TWG145A welder?
Tomahawk lists the TWG145A with up to 145 amps of DC inverter welding power.
Q. How much generator power does the TWG145A provide?
Tomahawk lists the TWG145A with 4.5kW rated power and 5.5kW peak power.
Q. Is the TWG145A dual fuel?
Yes. Tomahawk lists the TWG145A as dual fuel, operating on gasoline or LPG propane.
Q. What welding processes does the TWG145A support?
Tomahawk lists manual arc welding and applications for arc, stick, MMA, and TIG.
Q. Does the TWG145A include a regulator and gas hose?
No. Tomahawk lists the regulator and gas hose as not included.
Q. Does the TWG145A include a spool gun?
No. Tomahawk lists the spool gun as not included.
Q. Can I run this welder generator indoors?
No. Gas-powered welder generators must only be operated outdoors in a well-ventilated area. Never run a gas engine indoors, in a garage, basement, crawlspace, enclosed trailer, or partially enclosed area because of carbon monoxide danger.
Why We Like It:
The Tomahawk Power TWG145A is a useful step up for users who need more welding output and more onboard generator power in one portable unit. The 145 amp DC inverter welding output, 5.5kW peak generator power, dual fuel gasoline or LPG propane operation, electric start, included battery, digital display panel, 80% duty cycle, 120V receptacles, and portable wheel-and-handle design make it a strong fit for contractors, ranchers, farmers, maintenance crews, service trucks, workshops, and field repair professionals.
