30    General

The following rules cover construction requirements for supply systems. These rules are supplemented, in certain cases, by rules in other sections. Supply systems installed under these rules consist of, but shall not be limited to cables, conductors, fused devices, switches, transformers and associated equipment installed underground, on the surface and in buildings and may be buried or placed in ducts, conduits, manholes, handholes or a combination of these elements.

Terminating and access points for a supply system may be above or below ground and may be on or in buildings.