A NEMA Type ___ enclosure provides a degree of protection against windblown dust.

A NEMA Type ___ enclosure provides a degree of protection against windblown dust.

• A. 1
• B. 3R
• C. 3
• D. 4

Answer: (C)

NEMA enclosure ratings indicate how well an enclosure protects its contents from dust and weather in specific environments. For windblown dust, the rating that fits outdoor exposure and provides a basic level of dust protection is NEMA Type 3. This type is designed for outdoor use and guards against windblown dust and weather, making it suitable for installations exposed to the elements. Indoor-only ratings (types 1 and 2) aren’t intended for exterior conditions, while more rugged options (like type 4) offer higher weatherproofing than necessary for just windblown dust.

NEMA enclosure ratings indicate how well an enclosure protects its contents from dust and weather in specific environments. For windblown dust, the rating that fits outdoor exposure and provides a basic level of dust protection is NEMA Type 3. This type is designed for outdoor use and guards against windblown dust and weather, making it suitable for installations exposed to the elements. Indoor-only ratings (types 1 and 2) aren’t intended for exterior conditions, while more rugged options (like type 4) offer higher weatherproofing than necessary for just windblown dust.