Which NEC section prohibits splices or taps in flex cords?

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Prepare for the ICC Residential Electrical Inspector Level 1 exam with multiple choice questions, flashcards, and detailed explanations. Master your understanding of the residential electrical code to ensure success.

Multiple Choice

Which NEC section prohibits splices or taps in flex cords?

Explanation:
The main concept here is that flexible cords are not allowed to be spliced or tapped in the field. Flexible cords are designed to be continuous from plug to appliance, with a secure termination at each end. Introducing a splice or tap inside the cord creates a weak point where insulation can crack, connections can loosen, and the cord can overheat, compromising safety and reliability. That specific prohibition is stated in NEC 400.13. The other sections pull in different topics—one deals with ampacity and how conductors carry current under different conditions, another with sizing for equipment grounding conductors, and another with receptacle-related rules—so they don’t govern splices in flex cords.

The main concept here is that flexible cords are not allowed to be spliced or tapped in the field. Flexible cords are designed to be continuous from plug to appliance, with a secure termination at each end. Introducing a splice or tap inside the cord creates a weak point where insulation can crack, connections can loosen, and the cord can overheat, compromising safety and reliability. That specific prohibition is stated in NEC 400.13. The other sections pull in different topics—one deals with ampacity and how conductors carry current under different conditions, another with sizing for equipment grounding conductors, and another with receptacle-related rules—so they don’t govern splices in flex cords.

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