Lucent Technologies 555-661-140 manual Grounding Requirements, Measuring the AC Outlet Voltages

MERLIN LEGEND Communications System Release 6.1	Issue 1
Installation 555-661-140	August 1998
Installing the Control Unit	Page 2-10
AC Power and Grounding

110 - 125 Volts AC

Phase

Neutral (HOT)

Ground

Less than 1.0 Volt AC

110 - 125 Volts AC

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.