19
Figure 15
Connecting the grounding cable to a grounding strip
(1) Use grounding screws to attach the two-hole grounding lug to the chassis
(2) Grounding sign
(3) Grounding strip
(4) Grounding post
(5) Ring terminal
(6) Hex nut
Grounding the switch through the PE wire of an AC power
supply
CAUTION:
Make sure 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 the PE connector on the switch is well connected to the PE wire of the 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 16
Grounding the switch through the PE wire of the AC power supply
