In cases where the loads (houses) are clustered, a major electrical fault at one load centre (house) or
cluster would lead to the whole system getting switched off. In such cases, the RCCB or the MCB of both
the power house and the relevant cluster would switch off. If the distribution or the service lines are bare
conductors, then they should be attended to for the following.
• Cut trees and vine that touch the bare conductors.
• Put support struts or stay wires for tilted poles.
• Re-tension the sagging conductors.
• Replace damaged surge arrestors (specially during lightening season).
• Replace deteriorated wooden poles and cracked concrete poles.
• If there are loose connections or salt formation on copper and aluminium joints (due to
bi-metallic effect), the light emitted can be shattering. These joints should be cleaned and
tightly connected.
When repairing distribution or service lines, practice the following
• Turn off the turbine and electrical switch from power house. Do not allow them to be turned on
until the work is completed.
• Do not do any repair work during thunder/ lightening periods.
• Be careful when climbing old wooden poles (they may have deteriorated).
• Always follow safety measures and wear safety clothes.
Table 2: Checklist
Item Period Note
Weir, channel & penstock for dam-
ages
Once a month in dry season. During
the rainy seasons it is better if it is
done a few times per month
Forebay tank
Once a week. Once a day during
the rainy season.
Greasing the bearings
As recommended by supplier or
every 4000 hours.
Compare panel board values
Daily
Compare meter reading with
original values. If there is variation
it should correct it
Electromechanical items inspection Monthly
Check the temperatures and
physical conditions as explained
in this manual
Distribution line
Once a month in dry season. During
the rainy seasons it is better if it is
done a few times per month.
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