Where should the lighting load calculations for a nondwelling building comply with an energy code be referenced from?

The lighting load calculations for a nondwelling building must comply with an energy code because energy codes are specifically established to promote energy efficiency and ensure that buildings use energy in a sustainable manner. These codes address various aspects such as lighting power densities, control requirements, and the overall design related to energy consumption.

Referencing the energy code ensures that the calculations are aligned with current energy efficiency goals and mandates, which can vary from one jurisdiction to another based on state or local energy regulations. Compliance with the energy code supports the larger objective of reducing energy consumption and may also influence building performance ratings.

In contrast, while the National Electrical Code provides vital safety regulations concerning electrical installations, it does not focus primarily on energy efficiency. Local regulations can vary significantly and might not always be aligned with the latest energy efficiency standards. Safety standards, while critical for ensuring safe building practices, do not specifically address energy consumption aspects needed for proper lighting load calculations.