Installation Procedures - Nortel Meridian 1 Manual

Installation procedures

Installing safety ground/protective earth and logic return wiring
Failure to follow grounding procedures can result in unsafe or faulty
equipment. See Meridian 1 installation planning (553-3001-120) for a
complete description of approved ground sources and methods.
1 Make sure the power cord is disconnected from the power source.
Note: As a safety precaution, disable the circuit of each column at the
service panel.
2 Remove the air intake grill.
3 Using a volt/ohm meter, measure the resistance between the ground pin
on the power plug and a ground lug on the rear of the pedestal (see
Figure 21).
The resistance should be 0 ohms; if it is greater than 0.5 ohms, check the
power cord connections.
Figure 21
PDU ground lug locations
4 Connect the safety ground/protective earth wire (insulated ground wire
must be used for system grounding):
For a single-column system, connect a #6 AWG wire from the ground
source in the service panel to a ground lug on the pedestal.
Installing AC power
WARNING
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MAIN
CIRCUIT
BREAKER
ON ON ON
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PDU
8D53CB
Ground lugs
Page 39 of 500
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553-8993
System installation procedures