What is a lighting diagram used for?

A lighting diagram serves a fundamental role in the planning and implementation of lighting systems. It is primarily used to trace the wiring in ceilings and walls. This documentation helps electricians and contractors visualize and understand how different components of the lighting system are interconnected. By illustrating the placement of fixtures, switches, and connections to the electrical supply, it becomes easier to avoid potential issues during installation and maintenance.

The other options, while related to electrical work, do not align with the primary purpose of a lighting diagram. For instance, mapping electrical hazards focuses on identifying potential dangers in the electrical system, which is a separate process that doesn’t typically rely on the schematic provided by a lighting diagram. Similarly, designing new lighting layouts entails considering aesthetic and functional elements, which may use a lighting diagram as a reference but is not its primary function. Calculating energy costs involves analyzing consumption data and rates, which is a different area of electrical management and not directly relevant to the task of creating a detailed wiring layout.