Conductors

There are three types of conductor: flat tape, solid circular and stranded cable.

A range of conductor materials are available. Above ground, copper, aluminium and steel may be used. Below ground, copper is the most common choice due to its high resistance to corrosion.

It is important that earthing conductors should be correctly sized for their application, as they may be required to carry a considerable current for several seconds. For specific information on conductor ratings see Conductor Ratings.