Course Content
Article 200 – Use and Identifications of Grounded Conductors
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.
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.
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.
Article 242: Overvoltage Protection
NEC Chapter 2 Wiring and Protection
About Lesson

Bonding is an essential part of electrical installations to ensure safety and reduce the risk of electrical shock or fire. The National Electrical Code (NEC) provides guidelines for bonding, which is defined as the intentional electrical connection between metallic parts to ensure the continuity of the electrical system.

Bonding Requirements: The NEC requires bonding to be installed in specific situations to ensure safety. These situations include:

  1. Bonding of all metallic non-current carrying parts of electrical equipment together to the electrical system’s grounded conductor or grounding electrode system.
  2. Bonding of metal piping systems, including gas piping, that are likely to become energized with electricity.
  3. Bonding of all exposed non-current carrying metal parts of fixed equipment to the grounding system to minimize potential differences that may result in electric shock.
  4. Bonding of all metallic raceways, including cable trays, to the grounding system.

Types of Bonding: There are various types of bonding techniques, including:

  1. Equipotential Bonding: This involves bonding metallic parts of equipment together and connecting them to a common ground. This ensures that all metallic parts of the equipment have the same potential, eliminating the risk of electrical shock due to potential differences.
  2. Structural Bonding: This involves bonding the metallic parts of a structure together to prevent electric shock hazards. This includes bonding metal building frames, reinforcing bars, and other metallic elements of a structure to the grounding system.
  3. System Bonding: This involves bonding all metallic components of an electrical system together, including grounding electrodes, grounding conductors, and equipment bonding conductors. This ensures that all components have a common ground, eliminating potential differences and reducing the risk of electrical shock.
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