Deals principally with the provision of temporary electricity supply from the shore fixed installations or from mobile generating sets to vessel(s) under construction and during repair and conversion work. Covers all temporary electrical installations in the building and repairing of vessels in the yards. Applies to electrical installations set up for the provision of electricity supply during the execution of the works in:(a) shipbuilding and repairing yards;(b) vessels moored alongside the yards; and(c) confined spaces or locations or other similar situations on board vessels.Does not cover:(a) electricity supply for the vessel's electrical installation and any such part of such installation set up for the use by the crew on board vessels;(b) installations operating at voltages exceeding low voltage.