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MERLIN LEGEND Communications System Release 6.1
Installation
555-661-140
Issue 1
August 1998
Installing the Control Unit
Page 2-10
AC Power and Grounding
Figure 2-2. Measuring the AC Outlet Voltages
!
WARNING:
!
If the voltage readings do not measure the values required, the AC
outlet is improperly wired—do not install the system. Advise the
customer to have a licensed electrician correct the problem.
Grounding Requirements
Proper grounding of the installation site safeguards the system by
protecting it from the following:
■ Lightning
■ Power surges
■ Power crosses on central office trunks
■ Electrostatic discharge (ESD)
When installing the control unit, make sure you meet the following
grounding requirements:
■ The control unit, the central office trunk protector, and the AC
power service panel should be as close to each other as possible.
Less than
1.0 Volt AC
Neutral
Phase
(HOT)
Ground
110 - 125
Volts AC
110 - 125
Volts AC