My Mobile Welding Setup: The Equipment I Use for Trailer Repairs

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A lot of people ask what my welding setup is. Here is the equipment I use for mobile trailer repairs at Allred Trailer Service, from the welder and generator to the wire, shielding gas, and ground clamp I upgraded.

I run my welding setup on 240 volts. My welder is a TITANIUM UNLIMITED 200, powered by a PREDATOR 8750 generator. I use both Lincoln solid wire with shielding gas and VULCAN self-shielded flux-core wire.

This guide puts the equipment and product links in one place so you can see exactly what is in my setup.

Quick Reference: My Welding Equipment

| Equipment | Product | My Setup |

|---|---|---|

| Welder | [TITANIUM UNLIMITED 200](https://www.harborfreight.com/unlimited-200-professional-multiprocess-welder-with-120240v-input-57862.html) | Operated on 240V |

| Generator | [PREDATOR 8750 Open-Frame Inverter Generator](https://www.harborfreight.com/8750-watt-open-frame-inverter-generator-with-co-secure-technology-49-state-compliant-71340.html) | 8,750 starting watts and 7,000 running watts |

| Generator extension cords | [PREDATOR 25-Foot, 10-Gauge L14-30 Cord](https://www.harborfreight.com/25-ft-x-10-gauge-4-prong-twist-lock-30a-l14-30-generator-extension-cord-62308.html) | Two cords, each rated for 30 amps |

| Plug adapter | [NEMA L14-30P to 6-50R Adapter Cord](https://link.amazon/B07VAJBqK) | 1.5-foot generator-to-welder adapter |

| Solid welding wire | [Lincoln Electric SuperArc L-56](https://www.lincolnelectric.com/en/Products/superarcl56_gmaw?sku=ED028676) | .035-inch ER70S-6 wire, 12.5-pound spool |

| Flux-core welding wire | [VULCAN E71T-GS](https://www.harborfreight.com/0035-in-e71t-gs-flux-core-welding-wire-10-lb-roll-63494.html) | .035-inch wire, 10-pound roll |

| Shielding gas | [75% argon / 25% carbon dioxide Bottle](https://link.amazon/B0ijC291N) | Cylinder purchased through Weldfabulous on Amazon |

| Gas hose | [50-Foot Argon/Inert-Gas Welding Hose](https://link.amazon/B0f50IUqC) | Hose for MIG/TIG regulators and flowmeters |

| Welding helmet | [VULCAN ARCSAFE American Flag Helmet](https://www.harborfreight.com/101-sq-in-arcsafe-auto-darkening-welding-helmet-with-american-flag-design-59784.html) | Auto-darkening helmet with a 10.1-square-inch viewing area |

| Work gloves | [HARDY Premium Deerskin Leather Work Gloves](https://www.harborfreight.com/premium-deerskin-leather-work-gloves-large-57604.html) | Size large |

| Upgraded ground clamp | [BERGER 400-Amp Welding Ground Clamp](https://www.harborfreight.com/400-amp-welding-ground-clamp-63849.html) | Copper-alloy work clamp |

Welder: TITANIUM UNLIMITED 200

The welder I use is the TITANIUM UNLIMITED 200 Professional Multiprocess Welder from Harbor Freight.

It supports MIG, flux-core, DC stick, and DC TIG welding, with either 120V or 240V input. I run mine on 240V for my mobile trailer work.

For the wire setups covered here, I use .035-inch Lincoln solid wire with 75/25 shielding gas or .035-inch VULCAN self-shielded flux-core wire. The machine settings and wire selection need to match the material, joint, and repair.

Generator: PREDATOR 8750

My power source is the PREDATOR 8750 Open-Frame Inverter Generator. Bringing a generator gives me a power source for welding at the customer's location.

The linked model is rated for 8,750 starting watts and 7,000 running watts. It has a 120/240V, 30-amp twist-lock outlet.

When comparing generators for welding, pay attention to the running-watt rating and the outlet's amperage limit. The generator, outlet, and welder's input requirements all need to be considered together, particularly at higher welding settings.

Generator Extension Cords and Plug Adapter

I use two PREDATOR 25-foot, 10-gauge generator extension cords. Each cord is rated for 30 amps and has four-prong NEMA L14-30 twist-lock connections.

The adapter in my setup is a 1.5-foot NEMA L14-30P to 6-50R generator-to-welder adapter cord. Its L14-30P end connects to the generator cord, and the 6-50R end accepts the welder's three-prong 240V plug.

Solid Wire: Lincoln Electric SuperArc L-56

For my solid-wire setup, I use Lincoln Electric SuperArc L-56 in .035-inch diameter.

The linked product is ER70S-6 solid MIG wire, part number ED028676, on a 12.5-pound spool. I run it with 75% argon and 25% carbon dioxide shielding gas.

Solid-wire MIG welding relies on that external gas to shield the weld. For outdoor work, wind can interfere with the gas coverage, so the conditions around the weld matter along with the machine settings.

Flux-Core Wire: VULCAN .035-Inch E71T-GS

I also use VULCAN .035-inch E71T-GS flux-core wire, sold in a 10-pound roll.

This is a self-shielded wire, which means it does not require an external shielding-gas cylinder. That makes it another wire option for work outside.

E71T-GS is a [single-pass wire classification](https://www.brazing.com/products/SteelAlloys/mildsteelfluxparameters.aspx). Repairs requiring multiple weld passes need a wire and welding procedure suited to that repair.

Both of my wire options are .035-inch diameter, but each requires the appropriate machine setup. Check the wire instructions and welder manual for polarity, drive-roll selection, and settings when changing wire types.

Shielding Gas and the 50-Foot Gas Hose

For my Lincoln solid-wire setup, I use a 75/25 shielding-gas mix:

• 75% argon
• 25% carbon dioxide

I purchased my gas cylinder through Weldfabulous on Amazon.

My setup also includes a 50-foot argon/inert-gas welding hose for MIG/TIG regulators and flowmeters. The longer hose provides reach between the regulated gas supply and the welder.

When choosing a hose, check that its fittings and pressure rating match the equipment it will connect to.

Welding Helmet: VULCAN ARCSAFE

My welding hood is the VULCAN ARCSAFE Auto-Darkening Welding Helmet with the American flag design.

This model has a 10.1-square-inch viewing area, four arc sensors, and an adjustable welding shade range of 9 through 13. It also has a separate grind mode.

The helmet's shade and mode need to match the work being performed. Check those settings when switching between grinding and welding.

Work Gloves: HARDY Premium Deerskin

The gloves in my setup are HARDY Premium Deerskin Leather Work Gloves, in size large.

They have deerskin construction, a keystone thumb, and an elastic wrist. These are sold as general work gloves. For welding, select gloves designed for the process and its heat and spatter exposure.

Ground Clamp Upgrade: BERGER 400-Amp Clamp

I upgraded my ground clamp to the BERGER 400-Amp Welding Ground Clamp.

It has copper-alloy construction, a large contact area, and a strong spring. This is the replacement clamp included in my current setup.

The work connection matters when welding. Attach the clamp to clean, bare metal near the weld area so the welding circuit has a sound connection.

Frequently Asked Questions

What welder do you use for mobile trailer repairs?

I use the TITANIUM UNLIMITED 200 multiprocess welder from Harbor Freight.

Do you weld on 120V or 240V?

I run my welding setup on 240V.

What welding wire and gas do you use?

My solid-wire setup uses Lincoln SuperArc L-56 .035-inch wire with 75% argon / 25% carbon dioxide shielding gas. I also use VULCAN .035-inch E71T-GS self-shielded flux-core wire.

Does the VULCAN flux-core wire need shielding gas?

The E71T-GS wire linked here is self-shielded and runs without external shielding gas.

Where did you buy your welding gas cylinder?

I purchased my cylinder through Weldfabulous on Amazon.

Need Welding or Trailer Repairs in Sacramento?

Allred Trailer Service provides mobile trailer repair and welding throughout the Sacramento area. From ramp gates and spring assists to brackets and other trailer repairs, I bring the equipment to your location.

Call or text [(916) 251-9731](tel:9162519731) or visit [allredtrailerservice.com](https://allredtrailerservice.com/) to discuss your trailer.

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