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

Article 250 of the NEC specifies the grounding and bonding requirements for electrical systems and equipment. For systems and circuits over 1000 volts, additional grounding requirements apply.

Grounding of Systems:

Systems operating at more than 1000 volts should be grounded. The grounding conductor should be connected to each phase conductor at the point of attachment to the equipment. A grounding electrode conductor should then be connected to the grounding conductor and connected to the grounding electrode.

Grounding of Circuits:

Circuits over 1000 volts should also be grounded. The grounding conductor should be connected to each circuit conductor at the point of attachment to the equipment. A grounding electrode conductor should then be connected to the grounding conductor and connected to the grounding electrode.

Grounding Electrode:

The grounding electrode for systems and circuits over 1000 volts should comply with the requirements specified in Article 250.52. The grounding electrode should be located as close as practicable to the point where the service conductors enter the building. The grounding electrode conductor should be run in a straight line from the grounding electrode to the point of attachment to the equipment.

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