Grounding And Protection Devices; Out-Of-Building Connections/Lightning Protection - Avaya 4600 Series Installation Manual

IP Office Installation
G rounding and Protection Devices
8 4 B
O ut-of-Building Connections/Lightning Protection
1 1 7 B
The following are the only supported scenarios in which wired extensions and devices outside the main
building can be connected to the IP Office system. In these scenarios, additional protection, in the form
of protective grounding and surge protectors, must be fitted.
•
The fitting of additional protection does not remove the risk of damage. It merely reduces the
chances of damage to other internal equipment.
Cabling Requirements
•
Cables of different types, for example lines, extensions, ground and power connections, should
be kept separate.
•
All cabling between building should be enclosed in grounded ducting. Ideally this ducting should
be buried.
•
A Primary Protection Box must be provided at the point where the cables enter the building. This
should be three point protection (tip, ring and ground). Typically this would be gas tube protection
provided by the local telephone company. The ground wire must be thick enough to handle all the
lines being affected by indirect strike at the same time.
Installation Manual
IP Office 3.2 15-601042 Issue 14b (13th November 2007)
Page 144