Megger LCB2000/2 Guide De L'utilisateur page 12

Operation - General
When connected the instrument will display the Line to
Earth voltage except on the loop L-N switch position
when the line to neutral voltage is displayed.
Polarity Indication
If connected to a single phase power supply by a plug
or by the 3-wire lead set, three LCD 'neons' marked L-
PE, N-PE and L-N respectively will indicate supply
polarity. If a voltage is detected between their
respective two wires, the 'neon(s)' will activate. A 'neon'
will usually flash if one connection is open circuit.
Note: The presence of a voltage between phase and
earth does not prove earth continuity, as the earth
could have a high resistance and a voltage would
still be measured. To test earth continuity refer to
the sections on loop resistance or RCD testing.
If Setting A (see page 5) is set, the instrument will
automatically switch Line and Neutral as appropriate.
This enables a test to be performed without inverting
the plug connections. The live terminal of the wall
socket is identified by the addition of a separate symbol
adjacent to the 'neons'.
Setting A (Europe)
L-PE N-PE
Setting b (U.K.)
L-PE N-PE L-N
L-N
Normal Supply (1)
Normal Supply (2)
Neutral Live
Neutral Open Circuit
Earth Open Circuit
Normal Supply
L-N Reversed
Neutral Live
Neutral Open Circuit
Earth Open Circuit
11