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System Grounding Requirements
Proper grounding of the installation site is fundamental to
protect the MERLIN
II
communications system against
these types of electrical discharges:
●
Lightning strikes near the
●
Power surges
●
Power crosses on Central
●
Static discharge
The following procedures serve as electrical safety
requirements and guidelines in grounding. Apply them as
you install the MERLIN II system.
WARNING:
Make sure these requirements are satisfied
before applying power to the system.
SYSTEM GROUND
CONNECTION
The control unit the CO line protector, and the ac power
service panel should be as close to each other as possible.
The adequacy of lightning protection is a direct function
of the distance between these pieces of equipment.
Recognizing that equipment may be spread throughout a
building, the National Electric Code (NEC) requires that
the ground point for the CO line protector be bonded to the
ac power ground. Proper grounding helps prevent
equipment damage due to lightning energy and/or power
transients conducted into the equipment via CO and ac
power lines.
It is the responsibility of the local telephone company to
provide protection of Central Office lines at the entrance
to the site. The protection should consist of the following:
●
Carbon blocks or gas discharge tubes connected to an
approved ground
System Grounding Requirements 2-5