1. The installation and utilization of a system of wire for the conduction of electricity.
2. A system of electric conductors and components for conveying electric power from a source to the point of use.

In general, electric wiring for light and power must convey energy safely and reliably with low power losses, and must deliver it to the point of use in an adequate quantity at a rated voltage.

Electric wiring systems are designed to provide a constant voltage to the load within the capacity limits of the system.