What is typically not required for dedicated circuits in residential buildings?

The selection of general lighting circuits as typically not required for dedicated circuits in residential buildings is rooted in the National Electrical Code's principles concerning circuit requirements for different appliances. Dedicated circuits are specifically mandated for certain high-load appliances, like refrigerators, washing machines, and electric dryers, because these appliances often require more current than what general-purpose circuits can safely supply. The NEC emphasizes the need to protect the circuit and the appliance from overload, which is particularly critical for devices that operate continuously or have high start-up current draws.

General lighting, on the other hand, is designed to accommodate a broader range of smaller loads and is intended for everyday use rather than specific, high-demand appliances. This allows for shared circuits within a dwelling, which can enhance the flexibility and usability of the electrical system without the need for strict separation as seen with dedicated appliances. Therefore, it’s common practice to allow general lighting to operate on the same circuits that may also be used for other general-purpose outlets, rather than requiring a dedicated circuit. This helps to optimize circuit usage and meet the typical demands of residential environments.