What distinguishes flux-cored arc welding (FCAW-S) 'self-shielded' from FCAW-G 'gas-shielded'?
-
A
FCAW-S uses a solid wire; FCAW-G uses a tubular wire
-
B
FCAW-S generates its own shielding from the flux core without external gas; FCAW-G requires an external shielding gas
-
C
FCAW-S is always performed with AC; FCAW-G uses DC only
-
D
FCAW-S cannot be used outdoors; FCAW-G is preferred outdoors