When work is being carried out beside any public road or other existing road, appropriate warning signs shall be erected by the Electrical Contractor. The form, placing and light of the warning signs must comply with all local and national regulations and safety codes for road works.
Where it is necessary for any trench, pit or manhole to be left open overnight, ample flashing warning lamps shall be placed at each end and at intervals not greater than 10 metres. In built up areas barricades shall be erected along the length of the trench pit or manhole in addition to warning lamps. Where necessary or as directed by the S.O.’s Representative, flag-men shall be stationed at strategic locations to control prevailing traffic.

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