circuit protective conductor [Earth Work]
Earth Work [Earth Work]
Earthing Conductor
The electrical installation shall where required be connected to the general mass of the earth by an earthing conductor. The material used for the earthing conductor shall be as follows:
- conductors above ground shall be galvanised steel tape or conductor;
- conductor buried in the ground or embedded in concrete shall be mild steel, allowance shall be made for reduction in the cross section of the steel over the design life of the earthing system;
The earth electrode system shall comprise one or more earth electrodes, earthing tape network, mesh or a combination of these in order to obtain the required earth electrode resistance.
Earth electrodes where used shall be of heavy duty galvanised mild steel of not less than 40 mm NB and 3000 mm long. Where multiple rods are used they shall be separated by a distance of not less than the driven length.
