A NEMA type ______ enclosure offers only protection against incidental contact.

• A. Type 1
• B. Type 2
• C. Type 3
• D. Type 4

Answer: (A)

NEMA enclosure ratings describe how much protection an enclosure provides against contact with live parts and against environmental intrusion. When an enclosure is described as offering only protection against incidental contact, it means it blocks finger contact or accidental contact with energized parts but does not guard against dust, moisture, or outdoor weather.

This is the basic indoor protection level, intended to keep someone from touching live components without providing any seals against dust or water. Other enclosure types add protections beyond incidental contact—for example, some protect against dust ingress or dripping water, and others are designed for outdoor exposure and weather resistance. Because the question specifies protection limited to incidental contact, the best match is the simplest indoor rating.