Instruction manual

POWER AND GROUNDING
Battery Backup (Single-Carrier System)
A battery supply and an inverter can be used to provide standby power for up to 8 hours after a
commercial power failure.
When standby power is provided, the following items must be taken into consideration:
Size and weight of the batteries
Size and weight of the inverter(s)
Heat dissipation
Air flow and circulation
Items of equipment to receive power
This standby power system contains the following:
Inverter
Batteries
Battery stand
The single-carrier cabinet system requires a 120-volt AC input that is provided by the inverter.
The size of the inverter is determined by the system configuration and the additional equipment
to be provided with power in the event of a commercial power failure. The size of the battery
supply required depends upon the length of time power is to be provided and the particular power
demands of the system. Table T shows the approximate power consumption requirements that
can be used to size the system for emergency generators or battery backup.
House Wiring
House wiring includes all on-premises wiring on the customer side of the cross-connect field.
The cross-connect field can be either 66-type or 110-type hardware.
Wiring is distributed from the cross-connect field by 25-pair cables. The 25-pair cables are con-
nected either directly to terminal wall jacks using adapters or to satellite locations. Satellite loca-
tions are used when already present or when required by the length of the wiring runs from the
switch to the terminals. The 25-pair cables can be divided into either 4-pair or 3-pair wiring
groups (4-pair wiring groups are recommended). From the satellite locations, 4-pair D-inside
cables connect the satellite locations to information outlets (modular wall jacks).
See DEFINITY  Communications System Generic 1 and Generic 3i—Wiring, 555-204-111, for
details on the cross-connect hardware and wiring distribution.
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