The principal incoming power line that connects a utility distribution grid to a consumer's premises. It terminates at the main switchboard or metering point, establishing the boundary between utility-owned infrastructure and customer-owned wiring. Sizing this conductor dictates the maximum total load the facility can draw.
Heard on the job
The excavation crew needs to hand-dig near the boundary so they don't strike the electric main.
Also heard as
- mains cable
- incoming main
- service drop