The NEC requires that recessed portions of non-type IC fixture enclosures shall be spaced at least _____" from combustible material.

The requirement for spacing recessed portions of non-type IC (Insulation Contact) fixture enclosures is based on safety regulations outlined in the National Electrical Code (NEC). Specifically, the NEC stipulates that these enclosures must be spaced a minimum of 1/2 inch from combustible materials. This regulation is crucial to prevent potential fire hazards – ensuring that heat generated by the lighting fixtures does not ignite nearby flammable substances.

Choosing 1/2 inch aligns with guidelines meant to protect both the fixtures and the surrounding materials from overheating. When fixtures are recessed, there is less room for heat dissipation, and maintaining this distance helps to mitigate risks associated with heat build-up that could otherwise lead to a fire.

Understanding this requirement underscores the importance of adhering to electrical codes in construction and installation practices to ensure safety in residential and commercial environments.