1. The user shall cause -
a. roofs, gutters, downpipes and waste-pipes on premises to which electrical energy is supplied to be earthed, except -
i. where the operating voltage does not exceed 50;
ii. roofs made of non-conductive material or metal roofs covered by non-conductive material;
iii. gutters, downpipes and waste-pipes made of non-conductive material or gutters and downpipes attached to a metal roof which is covered by non-conductive material;
iv. roofs, gutters, downpipes and waste-pipes on premises which receive electricity by means of underground service connections; and
b. all accessible metallic parts of electrical machinery which, though normally not forming part of an electrical circuit, may become alive accidentally, to be protected by an insulating covering or otherwise enclosed or to be earthed, except -
i. metal in earth-free situations, other than runs of metal wireway and the close-fitting metal sheathing and armouring of cables;
ii. short separate lengths of heavy-gauge metal wireway used for the mechanical protection of cables where such cables are not used in the secondary circuits of discharge luminaire installations;
iii. short, unexposed, separate lengths of metal wireway used for the mechanical protection of insulated wiring passing through walls, floors, partitions or ceilings;
iv. metalwork of fixed electrical machinery where such metal work is more than 2,4 m above the floor: Provided that this exception shall not apply where such metalwork is situated in any position likely to become damp, or in an elevator shaft, or near rotating machinery, or in contact with a wall, ceiling or other support constructed of or covered with conducting material;
v. metal parts of electrical machinery where such parts are enclosed or shrouded by insulating material so that such metal parts cannot be touched;
vi. cleats, clips, saddles, clamps or other devices for fixing wireways and cables;
vii. shades, reflectors and guards supported on lamp holders or discharge luminaires;
viii. lamp caps;
ix. metal parts of or screws in or through non-conducting material which are separated by such material from current-carrying parts and from earthed non-current-carrying parts in such a way that in normal use they cannot become live or come into contact with earthed parts.
2. If at any time through a test of any electrical installation on a premises by the supplier it is found that the roofs, gutters, downpipes and waste-pipes of the premises or exposed metallic parts of the electrical installations as contemplated in subregulation (1) are not earthed, the supplier shall require the occupier or owner of such premises to effect the necessary earthing within a fixed period of not more than 30 days, and should the occupier or owner fail to comply with such requirements the supplier may disconnect the electrical energy to such premises and shall not reconnect such energy until the earthing has been carried out to his satisfaction: Provided that the provision for the disconnection of the electrical energy shall not apply to premises owned by the State (including a provincial council, the South African Transport Services or the Department of Post and Telecommunications).