Discussion
Which is not a type of earthing?
Answer: D
The one that is not a type of earthing is Balance earthing.
Earthing is classified by purpose. System earthing connects the neutral of the supply system to earth. Equipment earthing connects the exposed metal parts of apparatus to earth. Static and lightning protection earthing provides a path to discharge static charge and lightning current safely.
'Balance earthing' is not one of the recognised categories, so it is the odd one out.
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