TESTBOY Testavit Schuki 1A Bedienungsanleitung Seite 23

Operation
If the tester indicates a fault condition in the wiring under test,
always investigate the wiring or have the wiring investigated by
a competent person.
Do not contact accross two phases of a three phase supply.
The tester will not correctly test circuits using isolation
transformer.
Before testing, disconnect any loads from the circuits of all
socket outlet in same distribution board as possible with the
socket under test. Some loads connected may lead to
measuring error.
Check the RCD trigger function in an known correctly circuit
with RCD before used.
Use caution with voltages above 30 V ac as a shock hazard
may exist.
FOR USE BY COMPETENT PERSONS
Anyone using this instrument should be knowledgeable and
trained about the risks involved with measuring voltage,
especially in an industrial setting, and the importance of taking
safety precautions and of testing the instrument before and
after using it to ensure that it is in good working condition.
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Testavit Schuki 1A 23