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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-05
Chapter3 Installing the Cisco ASR 903 Router
Installing the Chassis Ground Connection
To ensure that the chassis ground connection that you provide is adequate, you need the following parts
and tools:
•Ratcheting torque screwdriver with Phillips head that exerts up to 15 in.-lb (1.69 N-m) of pressure
for attaching the ground wire to the router
•Crimping tool as specified by the ground lug manufacturer
•18 AWG copper wire for the power cord
•6 AWG or larger copper wire for the ground wire
•Wire-stripping tools appropriate to the wire you are using
Caution Before making connections to the CiscoASR 903 Router, ensure that you disconnect the
power at the circuit breaker. Otherwise, severe injury to you or damage to the router may
occur.
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
Use copper conductors only.
Statement 1025
Warning
When installing the unit, the ground connection must always be made first and disconnected last.
Statement 42
This unit is to be installed in a restrictive access location and must be permanently grounded to minimum
6 AWG copper ground wire.
Perform the following procedure to ground the CiscoASR 903 Router using a 2-hole lug and the
corresponding mounting point. Most carriers require a minimum 6 AWG ground connection. Verify your
carrier’s requirements for the ground connection.
Step1 If your ground wire is insulated, use a wire-stripping tool to strip the ground wire to 0.5 inch ± 0.02 inch
(12.7 mm ±0.5 mm) (Figure 3-11).
Figure3-11 Stripping a Ground Wire
Step2 Slide the open end of your 2-hole ground lug over the exposed area of the ground wire.
Insulation Wire lead
0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)
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