What two factors determine the type of MIG welder used?

The two factors that determine the type of MIG welder used are output amp and duty cycle.

Output amps refer to the current flowing during the welding process, which is essential for achieving the required heat to fuse the materials being welded effectively. Different welding applications and materials require varying amperage levels to ensure proper penetration and bonding without causing damage or defects.

The duty cycle is a crucial specification that indicates the amount of time a welder can operate within a given period without overheating. It is usually expressed as a percentage, indicating how long the welder can run before needing to rest. A higher duty cycle allows for more extended use, which is vital for larger projects or continuous welding tasks.

Together, these factors help determine the suitable welder for specific applications, ensuring optimal performance and efficiency in MIG welding processes.