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

Table 220.86 of the NEC provides demand factors for various types of medical facilities. The demand factors listed in the table are used to determine the electrical load required for the facility, which is an important aspect of electrical design and installation. Here are the steps to using Table 220.86:

  1. Determine the type of medical facility: The first step in using Table 220.86 is to identify the type of medical facility being designed or installed. The table provides demand factors for several different types of facilities, including hospitals, nursing homes, and outpatient facilities.

  2. Calculate the total connected load: The next step is to calculate the total connected load for the facility. This includes all electrical equipment, appliances, and devices that will be connected to the electrical system. The total connected load is usually measured in kilowatts (kW) or amperes (A).

  3. Find the appropriate demand factor: Once the total connected load has been calculated, locate the appropriate demand factor in Table 220.86. The table provides different demand factors for different types of loads, such as lighting, heating, and cooling. The demand factor is used to calculate the demand load, which is the amount of electrical power required to meet the needs of the facility at any given time.

  4. Multiply the total connected load by the demand factor: To calculate the demand load, multiply the total connected load by the appropriate demand factor from Table 220.86. The resulting number is the total demand load for the facility.

  5. Repeat for all loads: It is important to repeat this process for all loads in the facility to ensure that the electrical system is designed and installed correctly.

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