When welding in the overhead position, spatter may fall into or on the nozzle and contact tube, which may ____.
A) cause the nozzle to explode
B) cause the contact tube to spark
C) cause the contact tube to short out to the gas nozzle
D) create extra spatter

Question

Quizplus · Accepted Answer

If spatter falls onto the contact tube and touches the gas nozzle, it can create a short circuit that disrupts the flow of shielding gas and can cause porosity in the weld. It is important to regularly clean the nozzle and contact tip during welding in the overhead position to prevent this situation from occurring. Choices A, B, and D are not correct as they do not accurately reflect the consequences of spatter falling onto the nozzle and contact tip.

When Welding in the Overhead Position, Spatter May Fall into or on the Nozzle