The power supply line consists of a 2- or 3-core cable:
L
=
phase conductor (usually black, brown or grey)
=
neutral conductor (usually blue)
N
PE
=
protective-earth conductor (green / yellow)
The device can also be connected to the power supply
downstream of a mains switch if it is ensured that the
mains switch is left ON all the time.
– 41 –
GB
Contents