Answer / amit

THREE TERMINALS OF MEGGERS ARE = GROUND, EARTH, LINE

THREE TERMINAL USE = GROUND & LINE USE FOR CHECKING
RESISTANCE BETWEEN GROUND AND LINE

EARTH AND LINE ARE USE FOR CHECKING RESISTANCE BETWEEN TWO
TERMINALS ONE WINDING

Answer / baljeetsingh

meggers have only two terminals and three terminal device
mentioned by u is earth resistance tester.
meggers are used to check insulation value of any equipment
wrt earth which should be highest possible in m ohms and
earth resistance are used to check the effectiveness of
earth pits and their resistancce which should be lowest
possible in ohms

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