Placing the power system underground is the most effective
solution to reduce faults. AADC is relying on the progressive
undergrounding of the network but OHL will still be the most
part of the rural areas network. It is evident from the ongoing
incidence of broken conductors and pole top fires that
AADC’s asset replacement program and its level of
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preventative maintenance need to be intensified and
increased. This requires a significant continuous maintenance
effort, which became costly and more difficult to manage as
the age of AADC’s wood pole network increases. Particular
intervals and maintenance activities of earthing system is
required