Is ELCB substitute of body earthing of portable electrical Equipment


 
 
Very often at construction site or another, issue of protection from electrical shock  in event of leakage/fault currents from portable electrical tools/machines e.g. welding machine surfaces. Safety practitioners  struggle a lot to ensure that electrical shock related injuries do not happen while using such portable electrical machinery. But it always remains a question of debate  as which provides the best protection, ELCB or Body earthing or combination of both.
I would like here to explain the importance of Body earthing.. Good integrated earthing system is indispensable for touch shock or protection of machine from damage and fire. The selection of earth wire of suitable capacity and material is key to the protection and integrity of it is even more important. Robust earthing  gives active protection against the touch shock and saves life. Contrary to this ELCB is a passive protection against the danger and if it malfunctions or improperly fitted, it fails to save the life. Hence provision of ELCB in upstream of power supply cable may not replace the need of providing Body earthing.
 
However combination of both is a two layers protection against the electrical hazards. and is the best solution.
 
 

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