Abstract :
The `IEE Wiring Regulations´, which were adopted as BS 7671 in 1992, have no statutory force, though compliance with them is likely to satisfy the relevant requirements of the Electricity at Work Regulations. Compliance with the Wiring Regulations is intended, amongst other things, to protect persons against hazards arising from electrical installations that are used with reasonable care, and having regard to the purpose for which they were designed. Useful guidance on the principles of earthing can be found in BS 7430: 1991 Code of practice for earthing. It applies to land-based installations and covers both system earthing, which is for providing a reference for the system voltage, and to protective earthing, which is for limiting potentials on conductive parts under earth fault conditions
