AT&T System 25 - Manual (Page 57)

INSTALLATION
Ground Wire Connections
The cabinets are connected to the single-point ground with #6 AWG copper
wires.
(Building ground requirements are described in Preinstallation
Requirements in this section.)
Warning: The cabinet power switches must be set to off.
1. In 2- or 3-cabinet systems, connect a #6 AWG wire between the
ground blocks of Cabinets 1 and 2 and Cabinets 1 and 3.
2. Connect a #6 AWG wire between the ground block of Cabinet 1 and
the single-point ground. (See Figures 2-9 and 2-1 3.)
POWER UP AND INITIALIZE SYSTEM
Separate power cords for each cabinet must be plugged into the designated
quad outlets.
Peripheral equipment (SAT, SMDR [Station Message Detail
Recording], or CAS [Call Accounting System], DTU and CSU [Customer
Service Unit]) collocated with the switch cabinet(s) must also be plugged into
these ac outlets.
Connect Power
1.
2.
3.
4.
Make sure the rear panel is in place on each cabinet.
Connect the receptacle end of a 3-wire power cord to the plug at the
rear of each cabinet.
Connect the power cord’s plug end to the quad ac outlet for each
c a b i n e t .
Recheck the electrical and ground connections.
Danger: Once power is applied, do not put your hands or
any tools into the cabinet.
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