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GROUNDING
REQUIREMENTS
WIRE LENGTH
LIMITATIONS
●
Frequency range.
60 Hz +/- 1 percent
●
Max. current.
3 amperes per power supply
●
Max. power use.
225 watts per power supply
The system must be connected to a properly grounded ac
outlet. See page 2-5, “System Grounding Requirements,”
for more information.
NOTE:
If Modular Processor Data Modules, Modular
Trunk Data Modules, or moderns are to be
installed at the control unit location, additional
grounded ac outlets will be needed.
Wires connected to the control unit should consist of a
single continuous run, i.e., without extension cords or
other splices, and should meet these specifications:
Power cord. The power cord must be less than 6 feet,
and must be connected to a properly grounded ac
outlet that is not switch-controlled.
Incoming lines. The distance from the network
interface provided by the local telephone company for
incoming lines must be spanned within one cord length
(generally 25 feet or less).
Jack field. The distance to the jack field mounted to
the left of the earner must be
Station. Each voice terminal
must be within 1000 feet
of the control unit.
WARNING: If a voice terminal is used for In-Range,
Out-of-Building (IROB) applications, IROB
protectors are required. See “IROB Protectors” on
page 2-126 for more information.
Preinstallation Requirements 2-3