Instruction manual

MERLIN LEGEND Communications System Release 5.0
Installation
555-650-140
Issue 1
June 1997
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:
Less than
1.0 Volt AC
Neutral
Phase
(HOT)
Ground
110 - 125
Volts AC
110 - 125
Volts AC