KYORITSU 3147A - Manual (Page 12)

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6−1 AC voltage measurement (Mains disconnection check)
The AC voltage measurement function is available on any ranges.
(1) Connect the Earth probe to the earth of the circuit under test
and Line probe to the other side. If the circuit is not earthed,
connect Earth probe to any appropriate conductor.
(2) Without pressing the Test button or Remote control switch,
take the reading on the AC voltage scale.
６．Measurement
CAUTION
Never press
test button
CAUTION
Never press
remote switch
AC voltage measurement (Mains disconnection check)
The AC voltage measurement function is available on any ranges.
DANGER
¡ Never make measurement on a circuit in which the electrical
potential exceeds the voltage measuring range in order to
avoid possible shock hazard. (Refer to Section 3.
"Specification, AC voltage measurement.)
¡ When testing installation that has a large current capacity,
such as a power line, be sure to make measurement on the
secondary side of a circuit breaker in order to avoid personal
injury.
¡ Do not press the Test button or Remote control switch during
voltage measurement.
¡ Never short live conductors with the tip of a probe to avoid
personal injury.
¡ Do not make measurement with the Battery cover removed.