HOLT Electricians Practice Exam

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What minimum clearance should be maintained for installed surface lighting fixtures from flammable materials?

  1. 1 inch

  2. 2 inches

  3. 3 inches

  4. 1 ½ inches

The correct answer is: 1 ½ inches

The minimum clearance that should be maintained for installed surface lighting fixtures from flammable materials is 1 ½ inches. This clearance is crucial for preventing potential fire hazards associated with heat generated by lighting fixtures. The primary concern is that if the fixtures are too close to flammable materials, such as fabrics or wood, the risk of combustion increases. Furthermore, maintaining this clearance allows for proper ventilation and helps dissipate heat, thereby extending the lifespan of the lighting fixtures and ensuring they operate safely. Regulations and safety standards, such as those provided by the National Electrical Code (NEC) or local building codes, typically reflect this requirement to promote safety in electrical installations.

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