Revised Standard from Last Update.

1. SCOPE

1.1 This Code of practice provides recommendations and guidance on meeting the requirements for the earthing of electrical installation for the purpose of:

a) protective earthing that is equipment earthing of low voltage installation to IS 732 to limit the potential (with respect to the general mass of earth) of non-current carrying metal work associated with equipment, apparatus and appliance connected to the system.

b) system earthing of low voltage installation to IS 732 to limit the potential (with respect to general mass of earth) of current carrying conductor forming part of the electrical system.

c) protective earthing and changeover switching arrangement for generator supplying low voltage installation.

The earthing of an electrical system or installation is generally provided for reasons of safety.

1.2 This Code applies only to land-based installations in and around the building.

It does not apply to:

a) ships, aircrafts, off shore installations;

b) equipments sensitive to static electricity; and

c) the internal earthing of the equipment.