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Preparing for Installation Grounding - Page 35
IP Office Installation Manual Preparing for Installation - Page 35
40DHB0002USCL – Issue 9 (28th October 2003) 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 page 36).
Protective Ground
A protective ground must be permanently fitted to IP400 Analog Trunk 16 modules (see
page 27). 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.
Protective Ground Point
(M4 pan head screw with shakeproof washer)
EXPANSION
PF2
PF1
A
nalog Trunk 16 Module
(
Rear view
)
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 above for protective
grounding.
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 centre fixing screw as shown below:
Use this M3 grounding screw, with int.
teeth washer, when M4 is not fitted
Functional Ground Point
M4 pan head screw with shakeproof washer
Slot B
ANALOG TRUNK
1 2 3 4
IP403
o
r
IP406
o
r
IP412
Expansion
Modules
Use centre cover fixing screw,
when M4 is not fitted
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.