Effective equipotential bonding for worker protection is achieved by placing a low resistance personal earth in parallel with the workers body. As they are both in parallel, in a line fault situation, fault current will flow in the personal earth and the workers body in direct proportion to the resistance of each
Ground Rise Potential (GRP) occurs in every instance in which an earthed network becomes live.
It may not always be possible to protect the pole top worker and the ground worker simultaneously.
To ensure the equipment is fit for purpose the fault level, peak factor and tripping times of the installation must be known
The inclusion of jointed steelwork in the short circuiting current path will result in slower tripping times and less protection for workers.