Nortel Networks 1000M warranty Installing the Four-Feed PDU

Installing DC power Page 123 of 456

Installing the Four-Feed PDU

Installing the NT4N49AA PDU is a two-step process. It involves:

1Installing safety ground/protective earth wiring on page 123

2Connecting power from the power plant to the PDU on page 125

Note: For installation in the UK, refer to the procedure “Connecting UK power to the Four-Feed PDU” on page 129.

Installing safety ground/protective earth wiring

CAUTION

System Failure

Failure to follow grounding procedures can result in unsafe or faulty equipment. See Communication Server 1000M and Meridian 1: Large System Planning and Engineering (NN43021-220) for a complete description of approved ground sources and methods.

Procedure 8

Installing safety ground/protective earth wiring

1Remove the associated 30 A fuse or set circuit breakers to the OFF position in the power plant to disconnect each pedestal from the power source.

2Remove the air intake grill from the rear of the pedestal.

3At the rear of the pedestal, use a Phillips screwdriver to remove the metal cover over the terminal block to access the safety ground/protective earth lugs. Leave the cover off until all pedestal connections are made.

4Connect the safety ground/protective earth wire.

•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.

•For a multiple-column system, connect a #6 AWG wire from the ground source in the service panel to a ground lug on the closest column. Daisy-chain #6 AWG ground wires from one pedestal to the

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning