Electricity works to benefit our lives as it powers all daily-use electric/ electronic equipment which is giving its best deal. Along with the need for proper functioning of equipment, we also need to think about the concern regarding human life safety from electric shocks or electrocution which is an outcome of electric fault events. Installation of a proper earthing system in an electric network is a worthwhile safety precaution.
We must understand the cause of electric fault occurrences and must take safety measures while dealing with these unwarned occurrences. The fault current naturally takes the shortest path to the conductive mass of the earth through any material that conducts electricity. It is essential that we intentionally provide it a path to the ground otherwise it may take the path through a human body. Human body conducts current which delivers an electric shock as our body largely contains sodium and water.
Perfectly safe facility with proper earthing setup as per relevant standards
The earthing system considering proper grounding conductors, soil conditions, bonding techniques, the connections and terminations are critical parameters determining the system design and it is necessary for the fact mentioning protection of equipment, from blowing off within seconds. The designing and installation of earthing should be always in accordance with relevant standards and codes i.e., IS 3043: 2018, IEEE 80:2013 & NBC 2016.
Maintenance free earthing technique is the one widely accepted and applied for reliability and long-term service which is expected to have 4 times longer life as compared to conventional grounding technique. The bare copper bonded conductor which is a solid rod technology is driven deep inside the ground to about 2-3-meter depth and connections are made from the equipment establishing grounding. Copper bonded rod, GI Electrode and Pure Copper electrode are conductors offered to pave path for the electrical faults among which copper bonded rods exhibit maximum conductivity as it is precisely manufactured from low carbon, high tensile steel with flawless electrolytic copper coating of 250 microns.
As they offer superior conductivity and strength owing to the copper-steel concoction they are the best pick that can serve as an earthing conductor. Layers of salt and charcoal mix were traditionally used for the backfilling process, but this conventional practice has been banned by all the relevant standards as they have many disadvantages because it requires frequent maintenance which gave way for earth enhancement compounds into the market. Earth enhancement compound is carbon based conducting soil, used as a backfill compound in maintenance free earthing systems and hence is highly recommended in National Building Code 2016.
The electrical network is critical and the connection making to this complex installation is not a difficult task as of now employing an exothermic welding system which makes low resistant permanent joints. Exothermically welded joints make strong and rigid connections that can be expected to have a longer life than that compared to joints made using conventional techniques such as crimping, brazing, compression type techniques, etc.
This is a fit and forget maintenance free earthing system involving below components does not seek regular repair or maintenance work yet guaranteed to stay installed and properly functioning for 25+ years.
copper bonded steel rod and
earth enhancement compound
with exothermically welded joints
entire installation secured in an earth pit cover