Grounding; Protective Ground; Functional Ground - Avaya IP Office 3.0 Installation Manual

Grounding

Grounding
Provision is made for both protective ground (earthing) and functional ground (earthing). In addition,
where the installation of telephone and/or other standard (tip/ring) devices in another building is required,
In-Range-Out-Of-Building (IROB) protectors must be fitted (see Out of Building Telephone Installations).

Protective Ground

A protective ground must be permanently fitted to IP400 Analog Trunk 16 modules (see IP400 Analog
Trunk 16). Connection of this protective ground requires the use of suitable tools and must be
connected at both ends before connection is made to the telecommunications network.
To connect the protective ground:
1. Attached one end of a #14 AWG (minimum) solid insulated cable (sleeve must be green/yellow)
to the Protective Ground Point as shown below. Ensure that the Ground Post securing screw is
fully tightened.
2. Connect, using a fastening that satisfies local regulations, the other end of the wire to the
approved protective ground.

Functional Ground

To ensure proper operation of the IP Office equipment, functional grounding is required:
• Caution
This functional ground is not a protective ground – see Protective Ground.
On some models of the units/expansion modules, there may not be a specific M4 functional ground
point. In which case use either the Trunk module kit fixing screw or the top cover center fixing screw as
shown below:
To connect the functional ground:
1. Attached one end of a #14 AWG (minimum) solid insulated cable (sleeve must not be
green/yellow) to the grounding screw and fully tightened.
2. Connect, using a fastening that satisfies local regulations, the other end of the wire to the
approved ground, such as building steel or an earthed metal cold water pipe.
Installation Manual
IP Office 3.0 40DHB0002UKCL Issue 12c (24th February 2005)
Preparing for Installation
Page 39