When sizing a branch circuit for a wall-mounted oven, the circuit size is based on what percentage of the appliance's nameplate rating?

When sizing a branch circuit for a wall-mounted oven, the circuit size should be based on 100 percent of the appliance's nameplate rating. This approach ensures that the circuit can handle the maximum current draw of the oven when it is operating under full load conditions.

Using the nameplate rating as a basis for sizing allows for adequate power delivery while also accommodating any potential startup surges that may occur when the oven is first turned on. This is particularly important for appliances like ovens, which can draw significant power to maintain high temperatures.

Other options reflect common practices for different types of loads but are not appropriate for a wall-mounted oven. For example, using a percentage of the nameplate rating might be suitable for continuous loads or for load calculations that do not involve high-demand appliances. Therefore, sizing the circuit to match the full nameplate rating ensures both safety and functionality in the kitchen environment.