NEC Article Guide

Master Article 240 - Overcurrent Protection

Article 240 covers overcurrent protection for conductors and equipment including fuses, circuit breakers, and their ratings.

Key Rules and Sections

Code Rule

240.4: Protection of conductors.

Code Rule

240.6: Standard ampere ratings.

Code Rule

240.21: Location in circuit.

Code Rule

240.24: Location in premises.

Code Rule

240.87: Arc energy reduction.

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