Main Equipotential Bonding
Main Equipotential Bonding involves joining together metalwork that is or may be earthed so that it is at the same potential.
Main Equipotential bonding is done from the main earthing terminal to incoming water and gas services. Earthing wire is easily identifiable as it is green and yellow as can be seen to the right.
Main Bonding is a fundamental requirement to allow electrical work to be carried out.
The Electrical Safety Council produce a number of helpful leaflets regarding electrical safety which can be found here.