C54 SAFETY OF LIFE AT SEA 



II 



(v) Lighting fittings shall be arranged to prevent temperature rises that 

 would be injurious to the wiring, and to prevent surrounding material from 

 becoming excessively hot. 



(vi) Wiring shall be supported in such a manner as to avoid chafing or 

 other injury. 



(vii) Each separate circuit shall be protected against short circuit. Each 

 separate circuit shall also be protected against overload, except in accordance 

 with Regulation 30 of this Chapter or where the Administration grants an 

 exemption. The current-carrying capacity of each circuit shall be permanently 

 indicated, together with the rating or setting of the appropriate overload 

 protective device. 



(viii) Accumulator batteries shall be suitably housed, and compartments 

 used primarily for their accommodation shall be properly constructed and 

 efficiently ventilated. 



(b) Passenger Ships only 



(i) Distribution systems shall be so arranged that fire in any main fire 

 zone will not interfere with essential services in any other main fire zone. 

 This requirement will be met if main and emergency feeders passing through 

 any zone are separated both vertically and horizontally as widely as is 

 practicable. 



(ii) Electric cables shall be of a flame retarding type to the satisfaction 

 of the Administration. The Administration may require additional safe- 

 guards for electric cables in particular spaces of the ship with a view to the 

 prevention of fire or explosion. 



(iii) In spaces where inflammable mixtures are liable to collect, no 

 electrical equipment shall be installed unless it is of a type which will not 

 ignite the mixture concerned, such as flameproof (explosion proof) equipment. 



(iv) A lighting circuit in a bunker or hold shall be provided with an 

 isolating switch outside the space. 



(v) Joints in all conductors except for low voltage communication circuits 

 shall be made only in junction or outlet boxes. All such boxes or wiring 

 devices shall be so constructed as to prevent the spread of fire from the box 

 or device. Where splicing is employed, it shall only be by an approved method 

 such that it retains the original mechanical and electrical properties of the 

 cable. 



(c) Cargo Ships only 



Devices liable to arc shall not be installed in any compartment assigned 

 principally to accumulator batteries unless the devices are flameproof 

 (explosion proof). 



Ch. 2 



