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3. Turn on the power to the circuits being tested where necessary.
4. Refer to table 1 to determine the phase presence and the phase
sequence of the wiring being tested.
If all phases are present then all phase LED's and the relevant phase
sequence LED will illuminate. (see Note 3).
If a phase is missing then only the LED of the missing phase will
illuminate. The phase sequence LED's should be ignored when a
phase is missing.
Warning
Where a 3-phase distribution system is found to have a wiring error,
maintenance should only be carried out by a competent electrician
who is familiar with the relevant regulations, the safety risks involved
and the consequent normal safe working practices.
6
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