TESTBOY 113 Bedienungsanleitung Seite 20

Operation
When using the Tester, if tip does not glow, voltage could still
be present. The Tester indicates active voltage in the presence
of electrostatic fields of sufficient strength generated from the
source (MAINS) voltage. If the field strength is low, the Tester
may not provide indication of live voltages. Lack of an indication
occurs if the Tester is unable to sense the presence of voltage
which may be influenced by several factors including, but not
limited to:
● Shielded wire/cables
● Thickness and type of insulation
● Distance from the voltage source
● Fully-isolated users that prevent an effective ground
● Receptacles in recessed sockets/ differences in socket
sign
● Condition of the Tester and Batteries
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, espe-
cially 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.
The single-pole phase testing is not appropriate to determine
whether a line is live or not. For this purpose, the double-pole
voltage test is always required.
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Testboy 113