Electrician's Licensing Practice Exam

What is the minimum wattage required for kitchen lighting in a residence per NEC standards?

1. 1 watt per square foot

2. 2 watts per square foot

3. 3 watts per square foot

4. 4 watts per square foot

The correct answer is: 3 watts per square foot

The correct answer is based on the National Electrical Code (NEC) requirements, which stipulate the minimum lighting load for kitchen areas in residential applications. The NEC recommends that kitchen lighting should have a minimum of three watts per square foot. This standard ensures that the lighting is sufficient for the various tasks typically performed in a kitchen, such as cooking and food preparation, where visibility is crucial for safety and functionality. This requirement is part of a broader effort to ensure that residential kitchens are adequately illuminated to reduce the likelihood of accidents and to enhance the overall usability of the space. By establishing a specific minimum wattage per square foot, the code provides clear guidelines for electricians and homeowners when designing lighting layouts in kitchens. Other choices imply differing wattage levels that do not meet the NEC's specified requirements for adequate illumination in kitchen environments, thus compromising safety and functionality. The three watts per square foot serves as a standard that balances energy efficiency with practical lighting needs.