| 1 | 120 V compact inverter | 120 V single-phase | About 20–90 A | 1.6–2.5 mm | Beginners, light repairs, and small projects using thin-to-medium steel | Runs from many household outlets, but has limited output for thick material and larger electrodes. |
| 2 | Dual-voltage portable inverter | 120/230 V single-phase | About 20–160 A | 1.6–3.2 mm | Home workshops and users who need to work at different sites | Offers more output on 230 V; verify the correct plug, circuit capacity, and input-current requirements. |
| 3 | 230 V general-purpose inverter | 230 V single-phase | About 20–200 A | 2.0–4.0 mm | Farm repairs, workshop fabrication, and general maintenance | A versatile choice for common mild-steel work; actual usable current depends on the duty cycle. |
| 4 | High-output 230 V inverter | 230 V single-phase | About 30–250 A | 2.5–5.0 mm | Experienced fabricators and heavier repair work | Higher output can support larger electrodes, but may require a suitably rated circuit and supply cable. |
| 5 | Three-phase industrial inverter | Typically 400 V three-phase, depending on region | About 30–400 A | 2.5–6.0 mm | Production shops, industrial maintenance, and sustained welding work | Designed for demanding use; requires compatible three-phase power and appropriate installation. |
| 6 | AC transformer MMA welder | Commonly 230 V or 400 V, depending on unit | Varies widely; often about 40–200 A | Typically 2.5–4.0 mm | Fixed workshop use and straightforward stick-welding tasks | Transformer designs are generally heavier than inverter units; confirm which electrode types the unit supports. |
| 7 | DC inverter with adjustable hot start | Usually 120/230 V or 230 V single-phase | About 20–200 A, depending on input | 1.6–4.0 mm | New welders who want help striking an arc, as well as general repair work | Hot start briefly increases current at arc initiation; it does not replace correct electrode choice or technique. |
| 8 | DC inverter with arc-force control | Usually 230 V single-phase | About 20–250 A, depending on input | 2.0–5.0 mm | Welding in tighter joints or positions where maintaining the arc can be difficult | Arc-force control can help reduce sticking, but excessive settings may produce a harsher arc and more spatter. |
| 9 | Generator-compatible inverter | Supply depends on the welder; often 120/230 V | Commonly about 20–160 A | 1.6–3.2 mm | Remote maintenance and work where mains power is unavailable | Check the welder’s generator requirements, including continuous output, voltage stability, and starting demand. |
| 10 | Heavy-duty inverter with high duty cycle | Typically 230 V single-phase or three-phase | About 30–300 A or more, depending on supply | 2.5–5.0 mm or larger, if rated | Professionals and users who weld for extended periods | Compare duty-cycle ratings at the stated current; a higher maximum amperage alone does not indicate longer operating time. |