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Page 92 of 436
Installing AC power
NN43021-310
Standard 06.01
5
Place a warning tag on the connection at the ground source. The warning
tag should read WARNING—TELEPHONE SYSTEM GROUND
CONNECTION—DO NOT DISCONNECT.
6
Using a volt/ohm meter, measure the resistance between the ground pin
on the power plug and the ground terminal on the power outlet.
7
The 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.
8
Remove the PDU field wiring access plate.
9
Connect 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 33).
Figure 33
Logic return connection for each column
+
+
MAIN
CIRCUIT
BREAKER
+
10 Replace the PDU field wiring access plate.
March 2013
+
+
ON
ON
ON
+
+
+
+
+
PDU
8D53CB
End of Procedure
+
+
TB1
A
L1
L2
Gnd
+
LR
553-8996
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