Course Content
Article 200 – Use and Identifications of Grounded Conductors
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Article 210 Branch Circuits
Article 210 of the National Electrical Code (NEC) covers the requirements for branch circuits, which are the circuits that supply power to the outlets, lighting fixtures, and other loads in a building. In this lesson, we will discuss the key requirements of Article 210.
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Article 215 Feeders
Article 215 of the National Electrical Code (NEC) covers the requirements for feeders, which are the circuits that supply power from the service equipment to the branch circuits in a building. In this lesson, we will discuss the key requirements of Article 215.
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Article 230 Services
In summary, Article 230 provides specific requirements for the installation of service conductors and equipment to ensure safe and reliable delivery of electrical power to buildings and structures.
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Article 242: Overvoltage Protection
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NEC Chapter 2 Wiring and Protection
About Lesson

NEC Article 240.3 covers the requirements for overcurrent protection in electrical systems. Overcurrent is defined as any current in excess of the rated current of equipment or the ampacity of a conductor. Overcurrent protection is a safety measure that is designed to protect electrical equipment and wiring from damage caused by excess current.

The key points covered in Article 240.3 are:

  • Overcurrent protection devices (OCPDs) must be rated at or below the available fault current.

  • The OCPD must be coordinated with the equipment it is protecting.

  • Overcurrent protection must be provided for each ungrounded conductor of a circuit.

  • The ampere rating of the OCPD must not exceed the ampacity of the conductors it is protecting.

  • The OCPD must be located at the point where the conductor receives its power.

  • The OCPD must be accessible to authorized personnel.

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