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3.3.2 Incoming Supply Cross Polarity Check
Where the polarity of the incoming mains supply has been reversed
(i.e., Supply Line is connected to Neutral & Earth, Supply neutral
& earth are connected to Line) then, as with all standard socket
testers, BZ701 will not detect this fault, unless the additional Supply
Cross Polarity Check is carried out.
To check for supply cross polarity an additional test is required
which is easily activated by touching the blue POLARITY CHECK
touch pad with a finger.
If the incoming supply wiring polarity is correct, the three LED's will
flash GREEN and the buzzer indicating correct socket wiring will
continue.
If the wiring polarity is reversed, the wiring LED's will flash RED
and the buzzer will emit a pulsed tone. The BZ701 will continue to
indicate this fault condition once the finger has been removed from
the touch pad.
In the event of a fault being indicated, investigation should only be
carried out by a suitably qualified electrician.
8
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