The welding cable assembly used for GMAW is constructed to:

The welding cable assembly used for GMAW is constructed to:

• A. Supply current from the machine to the electrode holder
• B. Supply current, gas and wire to the welding gun
• C. Ensure proper transfer of the sine wave to the electrical arc
• D. Complete an electrical circuit between the machine and the work

Answer: (B)

In GMAW, the welding gun needs three things to operate: electrical current to create and sustain the arc, shielding gas to protect the molten metal from contamination, and filler metal in the form of wire fed through the gun. The welding cable assembly is designed to deliver all three directly to the gun, so the arc can form, the weld is protected, and new metal is continuously added. Supplying only current would leave the weld unshielded and without filler; the idea of transferring a sine wave to the arc isn’t what the cable’s function is about, and while the complete welding circuit requires a return path to the machine, the gun assembly specifically provides current, gas, and wire to the gun.

In GMAW, the welding gun needs three things to operate: electrical current to create and sustain the arc, shielding gas to protect the molten metal from contamination, and filler metal in the form of wire fed through the gun. The welding cable assembly is designed to deliver all three directly to the gun, so the arc can form, the weld is protected, and new metal is continuously added. Supplying only current would leave the weld unshielded and without filler; the idea of transferring a sine wave to the arc isn’t what the cable’s function is about, and while the complete welding circuit requires a return path to the machine, the gun assembly specifically provides current, gas, and wire to the gun.