Grounding The Switch By Using The Ac Power Cord; Connecting The Power Cord; Connecting An Ac Power Cord To The Switch - HP JG221A Installation Manual

Grounding the switch by using the AC power cord

If the installation site has no grounding strips, you can ground an AC-powered switch through the protective
earth (PE) wire of the power cord, but must make sure:
The power cord has a PE terminal.

 The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
 The power cord is securely connected to the power outlet.
NOTE:
If the ground contact in the power outlet is not connected to the ground, report the problem and reconstruct
the grounding system.
Figure 31 Ground through the PE wire of the AC power cord
1
(1) Three-wire AC power cord

Connecting the power cord

CAUTION:
Before powering on the switch, you must connect the power cord and make sure the switch is well
grounded.

Connecting an AC power cord to the switch

To connect the AC power cord:
Wear an ESD-preventive wrist strap, and make sure the wrist strap makes good skin contact and is
1.
well grounded.
Connect one end of the AC power cord to the AC-input power receptacle on the switch (see
2.
32).
Connect the other end of the power cord to the AC power outlet.
3.
2
(2) Chassis rear panel
24
Figure