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We recommend not to choose GI electrodes because it can easily corrode and need more maintenance. As the time passes, machine to earth resistance or earth effective resistance increase.
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REALITY OF GI PIPE EARTHING (KNOWN AS GI ELECTRODE)
1. Galvanized Iron – A Corrosive Material GI electrodes are highly prone to underground Corrosion and leads to oxidation in most industrial Environments. *They claimed superior quality GI earthing pipe/electrode.
2. Corruption in manufacturing process Today, many self-appreciated earthing manufacturers are using GI water pipe which has only thickness of 1.4 mm. *They claimed the pipe thickness of 2 mm to 4 mm.
3. Loopholes in manufacturing techniques Practically, they are using pre-galvanized pipe which has a coating micron of 15 -20 microns. *They claimed hot-dip galvanized iron pipe having 80-100 micron.
4. Taking under-size internal strip They are putting short length Internal strip is with under-sized strip dimension of 25X3 mm. *They claimed full length strip of 50x6 mm in 3 meter electrode length.
5. Poor quality infill material In place of conductive crystalline mixture, they are filling an electrode with poor quality cheap material like factory waste/ mud/ sludge / slag etc. *They claimed superior quality infill material made up of graphite.
6. Low performing degraded compound They are manufacturing earth enhancing compound using sand/slag/ charcoal which is not a quality product hence damaging an earthing system & reduces life of the conductor. *They claimed best quality product showing NABL accredited & tested as per IEC 62561-7.
7. Internal Rusting After certain amount of time, zinc coating in galvanized pipes eventually wears out. When this happens, your pipes begin to corrode from the inside out, which lead to a de-graded earthing system. *They claimed life 25 years of serving life.