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Which sections of the NEC are dedicated to appliance calculations?

  1. NEC 100-110

  2. NEC 200.10 - 220.15

  3. NEC 220.16 - 220.20

  4. NEC 300.12 - 300.14

The correct answer is: NEC 220.16 - 220.20

The sections of the National Electrical Code (NEC) specifically dedicated to appliance calculations are indeed found in NEC 220.16 to 220.20. This range focuses on the demand factors and calculations necessary for determining the load characteristics of various types of appliances. Section 220.16 covers the maximum demand calculations for household cooking appliances, while 220.17 addresses demand for laundry, and sections 220.18 through 220.20 provide additional considerations for other types of appliances and their load calculations. This range is crucial for electricians, as understanding these calculations ensures safe and effective electrical service installation, compliance with code requirements, and efficient load management in residential and commercial settings. By focusing on these specific sections, electricians can accurately assess how much power each appliance will require, which is essential for ensuring that circuits are adequately designed to handle those loads without risking overcurrent or inadequate power supply.