Communication Server Large System Installation and Commissioning

Page 124 of 456 Installing DC power
NN43021-310 Standard 02.01 December 2007
next as illustrated in Figure 45, connecting all of the columns
together (or run a #6 AWG wire from the ground source to each
column individually).
Note 1: Use only insulated ground wire for system grounding.
Note 2: The safety ground/protective earth wire must be routed within
the cable-tie saddles and under the cable restraint bar at the base of the
pedestal.
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.”
Figure 45
DC column ground lug daisy-chain connection.
End of Procedure
Terminate on
last column
553-8995
To ground/protective
earth lug (or service panel)
From
ground source
553-8997
FLTR / PWR DIST
LRTN
BLO CB0 CB1
CB2 CB3
++
UNIT ASSY
EACH INPUT CIRCUIT MUST BE PROVIDED WITH A
LISTED FUSE OR CIRCUIT BREAKER SUITABLE FOR
BRANCH CIRCUIT PROTECTION, RATED 30A.
J6J5J3 J4
553-8997
FLTR / PWR DIST
LRTN
BLO CB0 CB1
CB2 CB3
++
UNIT ASSY
EACH INPUT CIRCUIT MUST BE PROVIDED WITH A
LISTED FUSE OR CIRCUIT BREAKER SUITABLE FOR
BRANCH CIRCUIT PROTECTION, RATED 30A.
J6J5J3 J4