The welding cable assembly for GMAW is designed to supply which three things to the welding gun?

The welding cable assembly for GMAW is designed to supply which three things to the welding gun?

• A. Current only
• B. Current, gas and wire
• C. Current and shielding gas only
• D. Electrical circuit to the work

Answer: (B)

GMAW gun assemblies must deliver three things to the welding gun: electrical current to heat the wire and form the arc, shielding gas to protect the molten weld from the atmosphere, and the filler wire itself as the electrode and metal source. The current energizes the arc so the wire melts; the shielding gas creates a protective envelope around the weld pool to prevent oxidation and porosity; and the wire continuously feeds to become the filler metal and maintain the weld. Without any one of these, a proper weld can’t be produced. That’s why the option describing current, shielding gas, and wire is the correct choice.

GMAW gun assemblies must deliver three things to the welding gun: electrical current to heat the wire and form the arc, shielding gas to protect the molten weld from the atmosphere, and the filler wire itself as the electrode and metal source. The current energizes the arc so the wire melts; the shielding gas creates a protective envelope around the weld pool to prevent oxidation and porosity; and the wire continuously feeds to become the filler metal and maintain the weld. Without any one of these, a proper weld can’t be produced. That’s why the option describing current, shielding gas, and wire is the correct choice.