For MIG welding, which shade level is the minimum recommended?

For MIG welding, which shade level is the minimum recommended?

• A. 9 or higher
• B. 3 or higher
• C. 12 or higher
• D. 5 or higher

Answer: (A)

The shade level on a welding helmet controls how much light and UV/IR radiation reach your eyes. MIG welding puts out a very bright arc, so you need a dark enough filter to protect your eyes while still letting you see the weld. A shade of nine is the practical minimum that provides adequate protection without making visibility too poor. Lower shades (like three or five) would let too much light through and can risk eye injury or arc eye, while much darker shades (like twelve or fourteen) offer more protection but make it harder to see the weld clearly. So, for MIG welding, the minimum recommended shade is nine or higher.

The shade level on a welding helmet controls how much light and UV/IR radiation reach your eyes. MIG welding puts out a very bright arc, so you need a dark enough filter to protect your eyes while still letting you see the weld. A shade of nine is the practical minimum that provides adequate protection without making visibility too poor. Lower shades (like three or five) would let too much light through and can risk eye injury or arc eye, while much darker shades (like twelve or fourteen) offer more protection but make it harder to see the weld clearly. So, for MIG welding, the minimum recommended shade is nine or higher.