Nortel Networks 1000M warranty 553-8996, Logic return connection for each column

Page 84 of 456 Installing AC power

5Place a warning tag on the connection at the ground source. The warning tag should read WARNING—TELEPHONE SYSTEM GROUND CONNECTION—DO NOT DISCONNECT.

6Using a volt/ohm meter, measure the resistance between the ground pin on the power plug and the ground terminal on the power outlet.

7The resistance should be 0 ohms. If the resistance is greater than

0.5 ohms, check the power outlet ground and safety ground/protective earth connections.

8Remove the PDU field wiring access plate.

9Connect the logic return wire.

Starting at the LRE, connect a #8 AWG wire and route it to the column and up or down the I/O channel area, as appropriate. Then route the wire through the conduit hole in the pedestal to LRTN on the field wiring block (see Figure 30).

Figure 30

Logic return connection for each column

								+
+						+
+					+	TB1	L1A	+
	MAIN
	CIRCUIT						L2
	BREAKER	ON	ON	ON			Gnd	+
							LR
	+	+	+	+	+
+
		PDU
		8D53CB

553-8996

10Replace the PDU field wiring access plate.

End of Procedure

NN43021-310 Standard 02.01 December 2007