145
Zone A Zone B
Earth ODU Mandatory Mandatory
Screen Cable Mandatory Mandatory
Surge Arrestor Unit at ODU – ALPU-
ORT Mandatory Mandatory
Earth Cable at Building Entry Mandatory Mandatory
Surge Arrestor Unit at Building Entry
– ALPU-ORT Mandatory Mandatory
Table 15 - Protection Requirements
Fiber Connection to
Network
Where fitted
Copper Connection to
Network
PIDU Plus
Surge Arrestor
Surge Arrestor
mounted the same
height as the ODU
Andrew
Grounding
Assembly to
Tower
Screened CAT 5e cable
Andrew
Grounding
Assembly to
Tower
Surge Arrestor
Grounding Stake
Grounding Cable
Power/Ethernet
Connection
Optional Ethernet Fibre
connection to ODU
ODU
Surge Arrestor
Surge Arrestor
to ODU Ground
Connection
Surge Arrestor to
ODU Ground
Connection
Typical Mast Installation Typical Wall Installation
Grounding Stakes
Fiber Connection to Network
Where fitted
Copper Connection
to Network
ODU
Optional Ethernet
Fibre connection to
ODU
Ground Connections should
be less than 0.6 metres
(2 feet) long. All upper
tower grounds should be
within 0.3 metres (1 foot) of
the ODU bracket and on the
same metal
Screened CAT 5e cable
PIDU Plus
Fitted inside building
Figure 78 - Diagrammatically showing typical wall and mast installations