Grounding

Ground currents tend to concentrate near power conductors and the cable enclosures take a large portion of the ground currents. Should a fault condition occur due to lightning or a failure in an electrical system, the cable bus could be considered to be a carrier of ground currents. To ensure the protection of lives and property caused by these electrical faults, systems are grounded to the substation ground grid and the building steel by means of the support materials.

Read more...