What is the required circuit size for a counter-mounted cooking unit in residential wiring?

The required circuit size for a counter-mounted cooking unit must be based on the nameplate rating of the appliance. This approach ensures that the circuit can handle the maximum load that the cooking unit may draw during operation without risk of overheating or tripping the breaker. The National Electrical Code (NEC) provides guidelines that emphasize the importance of sizing circuits to accommodate the actual current draw indicated on the appliance’s nameplate to maintain safety and functionality.

When sizing the circuit for such appliances, it's critical to consider the nameplate rating, which reflects the specific electrical needs of the unit. This practice not only ensures that the cooking unit operates effectively but also reduces the risk of electrical issues that could arise from under-sizing the circuit. Therefore, requiring the circuit size to be 100 percent of the nameplate rating is the appropriate standard to follow in residential wiring for counter-mounted cooking units.