How to check phase,neutral and ground of ac wire using multimeter

Thread Starter

sumitk

Joined Aug 1, 2012
7
Can someone explain me the how to check for neutral,phase and ground of ac suppy using a multimeter ,if all the three wires are of same color
 

Dodgydave

Joined Jun 22, 2012
11,318
Put your meter on AC Volts setting,
CONNECT SUPPLY
connect meter to Phase and Neutral = 230 Volts (+/- 6% based on European standards)

connect between Phase and Earth = 230 Volts

connect between Neutral and Earth = 0Volts

THE SAME WIRE THAT GIVES YOU 230 VOLTS ON TWO OF THE READINGS IS THE PHASE (LIVE)
if you live in USA the supply will be 120V AC

DISCONNECT SUPPLY

set meter to Ohms

then connect between Earth at the supply intake, and one of the wires = Zero ohms or as near to , will be the earth wire.
 
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