Regulations for the Installation of Electrical Wiring ... - Kahramaa

2. Are of adequate making and breaking capacity and,
3. Are suitably located and of such construction as to prevent danger from
overheating, arcing, or the scattering of hot metal when they come into
operation and as to permit ready renewal of fuse cartridges without danger.
B) Where the earth fault leakage current from a circuit, due to fault of negligible
impedance from a live conductor to earthed metal, is insufficient to operate the
fuses or circuit breakers of other similar devices provided, so as to comply with
regulation 302 ( A ), the circuit shall be protected against the persistence of
earth leakage currents liable to cause danger by an earth leakage circuit
breaker or equivalent device.
Note 03: Rewireable fuses are not permitted under any circumstances.
Every single pole shall be inserted in the live conductor only. Any switch connected in
the conductor connected with earth or neutral shall be a linked switch and shall be
arranged to break also all the live conductors.
303 All one way switches both single and double pole, shall be mounted so that the dolly is
up when the switch is in the “Off” position. This shall not be considered to be
applicable to fireman‟s switches.
304 Where metal work, other than current carrying conductors, is liable to become charged
with electricity is in such manner as to create a danger if the insulation of a conductor
should become defective or if a defect should occur in any apparatus:
1. The metal work shall be earthed in such a manner as will ensure immediate
electrical discharge without danger of shock or fire.
2. Other adequate precautions shall be taken to prevent danger.
305 Effective means, suitably placed for ready operations, shall be provided so that all
voltage may be cut off from every circuit and sub circuit and from all apparatus, as may
be necessary to prevent danger.
306 Every electric motor shall be controlled by an efficient device for starting and stopping,
such switch is to be readily operated and so placed as to prevent danger.
307 A) All apparatus and conductors exposed to weather, corrosive atmosphere, or
other adverse condition, shall be so constructed or protected as may be
necessary to prevent danger arising from such exposure.
B) Where a conductor or apparatus is, or is likely to be, exposed to flammable
surroundings or an explosive atmosphere, it shall be protected by a flameproof
enclosure or be otherwise so designed and constructed as to prevent danger.
308 Conductors and apparatus operating at voltage between conductors or to earth and
exceeding 250 Volts shall either:
1. Be completely enclosed in earthed metal, which is electrically continuous and
adequately protected against mechanical damage
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