TESTBOY 20 Plus Bedienungsanleitung Seite 23

Single-pole phase searching
Plug a test lead in the COM port (as shown in
Figure 3). Before the test, make absolutely sure
to disconnect all other test leads. Then touch
the probe tip to the wire. Be sure not to touch
the clip attached to the back side (move to up
position). If a phase is active, the V~ LED will il-
luminate!
This test is not suitable for determining the presence of hazardous line
voltage. During the test, even if V~ LED does not illuminate, 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 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
● 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.
®
Testboy 20 Plus
Operation
Figure 3
23