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Testboy 10 Mode D'emploi page 18

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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 design
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, especially in an industrial set-
ting, and the importance of taking safety precautions and of testing the in-
strument before and after using it to ensure that it is in good working con-
dition.
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
10

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