Kyoritsu Electrical Instruments Works KEW 4506, Instruction Manual

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6. Socket test
This tester is designed to perform wiring check for electrical outlet
sockets: 2P and 3P.
#
DANGER
● This tester is rated to CAT II 300 V AC (max. voltage to ground).
Do not test the circuits which exceed this rating: circuits in which
300 V or higher voltage to ground exists.
Note
● When conducting a test, stand on the floor and do not touch
anything other than the tester to measure electrical potentials
precisely when touching the touch pad on the tester.
● The tester may suddenly power off if you continue testing with
battery level warning indicator is displayed on the LCD.
6-1 Outlet with earth pole [3P]
Note
● The tester may show “E Non-connect”, although the outlet is
correctly wired, if the earth resistance of the circuit under test
is high or voltage between L-E is extremely low due to large
leakage currents.
The tester measures the following values and judges whether wall
outlets are properly wired or not.
(1) Voltages across terminals
(2) Potential differences between N terminal and touch pad
(operator)
(3) Resistances of earth wire (E) and neutral wire (N)
(4) Polarity of test voltage signal from signal source (KEW 8343)
As for (3) and (4) mentioned above, detailed explanations are
described in the following pages.