a separate cubicle is to be provided for each generator with flame retardant partitions between the different generator cubicles and between cubicles for outgoing circuits flame retardant partitions are also to be provided between generator control cubicles and associated switchgear switchboards controlling generators with an aggregate capacity less than 100.for voltages between poles or to ground of 50 volts and over, switchboards shall be of a dead front or metal enclosed type and.

9.1.1 Every ship's service and emergency generator shall be connected to a main or an emergency switchboard.ĩ.2.1 An unobstructed passageway not less than 1 metre wide shall be provided in front of the switchboard in the case of small ships, if this distance is impracticable, the passageway may be reduced to 0.6 metre.ĩ.2.2 If access is required at the rear of switchboards, the space shall be sufficient to permit maintenance, and be not less than 0.5 metre clear.ĩ.2.3 Passageways behind main switchboards shall be of ample height and shall, where practicable, be provided at each end with an access door, fitted with an external lock and such access doors shall bear a prominent and permanent indication of the maximum voltage in the case of metal clad switchboards that are completely enclosed, access doors need not be fitted ĩ.2.4 They shall give easy access from the back, unless designed for installation against bulkheads, and front without danger to personnel ĩ.2.5 The sides and backs and, where necessary, the fronts shall be suitably guarded ĩ.2.6 A non conducting mat or grating shall be provided as a floor covering at the front and rear, as necessary ĩ.2.7 The switchboard shall be installed in a dry location away from sources of steam, water and oil pipesĩ.3.1 Main and emergency switchboards shall be arranged as follows:

Switchgear vs switchboard construction