NEC Commercial Electrical Practice Test

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Prepare for the NEC Commercial Electrical Test with multiple choice questions each with detailed explanations. Study efficiently to excel in your exam!

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What is the required protection for non-metallic sheeted cable installed within 6 feet of the attic shuttle hole?

Ground fault circuit interrupter protection
Electrical insulation
Physical barriers
Conduit wiring

The correct answer is: Ground fault circuit interrupter protection

The required protection for non-metallic sheathed cable installed within 6 feet of the attic shuttle hole is ground fault circuit interrupter (GFCI) protection. This requirement is in place to enhance safety in areas where there is a higher risk of electrical shock due to the presence of moisture, which is common in attics and similar spaces. GFCI devices are designed to disconnect the electrical circuit when they detect an imbalance between the outgoing and incoming current, which can happen if someone comes into contact with a live wire, reducing the risk of electrical shock. This type of protection is particularly important in residential settings where non-metallic sheathed cables are used, as they are more susceptible to damage from physical disturbances or environmental factors. Installing GFCI protection in these areas ensures compliance with safety codes and standards, minimizing the risk of accidents or injuries associated with electrical systems.