What is the recommended filter lens shade range for FCAW?

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Multiple Choice

What is the recommended filter lens shade range for FCAW?

Explanation:
FCAW emits a bright arc with strong UV/IR radiation, so the welding helmet needs a lens that's dark enough to protect your eyes while still letting you see the weld pool clearly. A shade range of 12 to 13 strikes that balance for typical FCAW currents, giving solid protection without making the puddle invisible or the arc dark to inspect. Lighter options (like 8–9 or 10–11) wouldn’t provide enough protection at the brighter FCAW conditions, and a very dark shade (like 14–15) can hinder visibility at lower currents or when you need to check your weld between passes. So 12–13 is the practical, widely used choice for FCAW.

FCAW emits a bright arc with strong UV/IR radiation, so the welding helmet needs a lens that's dark enough to protect your eyes while still letting you see the weld pool clearly. A shade range of 12 to 13 strikes that balance for typical FCAW currents, giving solid protection without making the puddle invisible or the arc dark to inspect.

Lighter options (like 8–9 or 10–11) wouldn’t provide enough protection at the brighter FCAW conditions, and a very dark shade (like 14–15) can hinder visibility at lower currents or when you need to check your weld between passes. So 12–13 is the practical, widely used choice for FCAW.

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