14
Grounding the switch through the PE wire of an AC power
supply
If the switch is AC powered and no grounding strip is available at the installation site, you can ground
the switch through the PE wire of the AC power supply, as shown in
Figure 15
.
Make sure that the AC power supply uses a three-wire cable with a protection wire, and the PE wire of
the AC power supply is well grounded at the power distribution room or AC power supply transformer
side. In addition, make sure that the PE connector on the switch is well connected to the PE wire of the
AC power supply.
Figure 13
Grounding the switch through the PE wire of the AC power supply
