Nortel Meridian 1 Manual page 78

Page 40 of 500 Installing AC power
553-3001-210 Standard 14.00 June 1999
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 next as
illustrated in Figure 22, connecting all of the columns together. You can
also run a #6 AWG wire from the ground source to each column
individually. If the columns are not bolted together, physically separated
groups of columns should be grounded individually as shown in
Figure 20.
Figure 22
AC column ground lug daisy chain connection
+
+
MAIN
CIRCUIT
BREAKER
ON
+ +
+
From
ground source
5 Place a warning tag (WARNING—TELEPHONE SYSTEM GROUND
CONNECTION—DO NOT DISCONNECT) on the connection at the
ground source.
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.
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.
7 Remove the PDU field wiring access plate.
+
+
+
+
+
ON ON
+
+ +
PDU
8D53CB
To ground/protective
earth lug of next column
+
+ +
+
+
+
MAIN
CIRCUIT
+
BREAKER
ON ON ON
+
+ + + +
+
PDU
8D53CB
Terminate on
last column
553-8992