What shade number will you use for welding in the SMAW process when welding at 120 amperes.?

For SMAW (Shielded Metal Arc Welding) at 120 amperes, a suitable shade number for the welding helmet would typically be between 10 and 12. The exact shade can depend on factors like the specific electrode used and personal comfort, but shade 11 is a common choice for this amperage to provide adequate protection while allowing visibility. Always refer to the ANSI Z87.1 standards or manufacturer's recommendations for specific applications.