In residential wiring practices, what is the primary criterion for a branch circuit serving a wall-mounted oven?

A branch circuit serving a wall-mounted oven must be a dedicated circuit because such appliances typically require a significant amount of power to operate safely and efficiently. A dedicated circuit ensures that the oven has its own electrical supply and is not subjected to fluctuations in power caused by other devices on the same circuit. This minimizes the risk of overloading the system, which can lead to tripped breakers or even fire hazards.

Using a dedicated circuit provides the necessary amperage and voltage required for the operation of the oven, ensuring it can function without interference from other appliances. This practice is crucial for meeting electrical codes and safety standards, which stipulate that certain high-draw appliances, such as ovens, should not share a circuit with other devices to prevent potential overloads.