9171 Installation Guide
Proprietary & Confidential
Canoga Perkins Metro Ethernet Routing Switch
Page 12 of 26
2.3 Power Wire and Grounding Connection
2.3.1 AC Power Wire Connection
AC Power Socket (recommended)
It is recommended that users use single-phase three-wire outlets with neutral point connectors or
multifunction microcomputer outlets. The neutral points of power must be grounded reliably in a building.
Generally, in wiring of building construction, the power neutral points of electrical supply system in such
a building have been buried under the earth, so users need to confirm the power has been grounded.
AC Power Wire Connection
Step 1: Connect one end of the ground wire on enclosure included in a switch to the grounding
screw on back panel of the switch, and the other end is properly grounded.
Step 2: Insert one end of the power wire of the switch into the outlet on back panel of the
cabinet, and the other end into an AC power outlet.
Step 3: Turn on the power switch, and check if the power indicator on front panel of the switch is
bright, which indicates that power connection is correct.
Note: The ground wire must be connected before switches are powered on.
2.3.2 Grounding Connection
A noise filter is connected on the power input of switch, whose central grounding is connected directly to
the cabinet, which is called enclosure grounding (that is PE). This cabinet must be well grounded to
enable the safe flow of influence electricity and leakage into the earth and increase the
anti-electromagnetic interference of switch.
Correct Way of Grounding is as follows:
Connect one end of the yellow and green PE cable of switch to the terminal of grounding bar and screw
up the fastening nut when there is a grounding bar in the installation environment of Ethernet switches.
Note: it is an incorrect option to be grounded with fire mains and a lightning rod in a building, so the
ground wires of Ethernet switches should be connected to the works in switch room and grounded.
