HOLT Electricians Practice Exam

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What is the minimum clearance required between an electric space heating cable and an outlet box for surface lighting fixtures?

6 inches
8 inches
10 inches
12 inches

The correct answer is: 8 inches

The minimum clearance required between an electric space heating cable and an outlet box for surface lighting fixtures is determined by safety standards that prevent overheating and possible fire hazards. In this case, a clearance of 8 inches is specified to ensure that the heating cable does not adversely affect the operation of the lighting fixture or become a safety risk. Specifically, this clearance helps to maintain a safe distance, allowing heat generated by the heating cable to dissipate effectively without being trapped by the more enclosed space of the outlet box. This standard is in place to avoid situations where excessive heat could lead to damage to the wiring or the fixtures, ensuring both the longevity of the equipment and the safety of the premises. Adhering to these clearance standards is essential for compliance with electrical codes and preventing electrical fires.