According to NEC, how many receptacles are permitted per 20-amp circuit?

The National Electrical Code (NEC) indicates that for general-purpose circuits, the maximum number of receptacles that can be connected to a 20-amp circuit is determined by a rule allowing a maximum of 10 outlets. Specifically, the NEC defines a receptacle as any outlet where one or more plug-in devices can be connected, and it considers multiple types of outlets collectively under this guideline.

In adhering to this standard, it ensures that the circuit is not overloaded, maintaining safety and preventing tripped breakers or fire hazards due to excessive current draw. This design consideration is particularly relevant in residential settings where various devices may be plugged into receptacles.

While options that suggest fewer receptacles than 10 might seem reasonable in terms of capacity, they do not utilize the full allowance provided by the NEC for a 20-amp circuit. Conversely, any choice exceeding the limit of 10 receptacles would pose a risk of exceeding the safe operating current of the circuit, leading to potential safety issues. Therefore, the selection of 10-12 receptacles aligns with the NEC's guidance for proper electrical installations.