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
  1. General Requirements Article 220 establishes the general requirements for calculating electrical loads for a building. The calculations are based on the expected usage of the building, and the load calculations must be performed in accordance with the specific requirements of Article 220.

  2. Branch Circuit Load Calculations Article 220 provides specific guidelines for calculating the load of each individual branch circuit. The load calculation takes into account the expected use of the circuit, the type of loads that will be connected to the circuit, and the capacity of the circuit breaker or fuse that protects the circuit.

  3. Feeder and Service Load Calculations Article 220 also provides guidelines for calculating the load of the feeders and service entrance conductors that supply power to the building. The calculation takes into account the expected usage of the building, the number of branch circuits, and the connected loads.

  4. Demand Factors Article 220 provides a number of demand factors that can be used to reduce the calculated load for certain types of loads, such as lighting, heating, and cooling. The demand factors are based on statistical data and are intended to provide a more accurate representation of the actual load on the electrical system.

  5. Optional Calculation Methods Article 220 provides several optional methods for calculating electrical loads, such as the optional general lighting and receptacle load calculation method and the optional demand factors for specific loads. These optional methods are intended to provide flexibility and to account for variations in building usage.

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