Testboy 20 PLUS, Operating Instructions Manual, Page: 30 / 160

Operation
30 Testboy
®
20 Plus
This test is not suitable for determining the presence of hazard-
ous line voltage. During the test, even if V~ LED does not illu-
minate, a dangerous high voltage (> 33 V AC or 70 V DC) may
nevertheless be present.
The tester can only detect voltage generated by sufficiently
strong electric fields from power sources (grids, > 110 V AC).
If the field strength is low, the tester may not provide indication
of live voltages. Lack of an indication occurs if the tester is un-
able 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
● Receptacles in recessed sockets/ differences in socket design
● Condition of the Tester and Batteries
WARNING
Exercise caution at voltages above 30 V, as there is a
risk of electric shock.
WARNING
The phase searching function is not suitable for the
detection of hazardous line voltage.
CAUTION
Before touching conductive parts the absence of haz-
ardous voltage must be checked with the two-pole di-
rect contact measurement of other equipment.