Question

The standard electrode extension for FCAW-S with 0.045" (1.1 mm) wire and an insulating nozzle is

Option 1: 1/4" to 3/8" (6 to 9.5 mm)
Option 2: 1/4" to 3/4" (6 to 19 mm)
Option 3: 1/2" to 1-1/2" (13 to 38 mm)
Option 4: 3/4" to 1-1/4" (19 to 32 mm)

Answer 1

The standard electrode extension for FCAW-S with 0.045" (1.1 mm) wire and an insulating nozzle is Option 2: 1/4" to 3/4" (6 to 19 mm). In FCAW-S, a longer electrode extension is necessary for proper shielding and quality welds.

Step-by-step explanation:

The standard electrode extension for FCAW-S with 0.045" (1.1 mm) wire and an insulating nozzle is Option 2: 1/4" to 3/4" (6 to 19 mm). The electrode extension refers to the distance between the contact tip of the welding gun and the workpiece being welded. In Flux-Cored Arc Welding with shielding gas (FCAW-S), a longer electrode extension is required compared to other welding processes to protect the weld pool and prevent contamination.

The given options represent the acceptable range for the electrode extension in FCAW-S. The correct option, Option 2: 1/4" to 3/4" (6 to 19 mm), provides a range that allows for proper shielding and quality welds.