Earth ODU
Screen Cable
Surge Arrestor Unit at ODU – ALPU-
ORT
Earth Cable at Building Entry
Surge Arrestor Unit at Building Entry
– ALPU-ORT
Table 14 - Protection Requirements
Figure 95 - Diagrammatically showing typical wall and mast installations
Zone A
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
160
Zone B
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory