R-1 — لوائح التركيبات الكهربائية
11 التركيبات الكهربائية في المواقع الخاصة
الصفحة 43 في الوثيقة الأصلية
عرض PDFSECTION 11
ELECTRICAL INSTALLATIONS IN SPECIAL LOCATIONS
1100 MARINAS AND SIMILAR LOCATIONS
1100--1 The scope here provides specific requirements only to circuits intended to supply electrical installation
in marinas or similar locations like, pleasure craft or houseboats and do not apply to the internal electrical
installations of any pleasure craft or houseboats.
1100--2 The nominal supply volt age of the installation for the supply to marinas or similar locations like,
pleasure craft or houseboats shall be 240 V a.c. single-phase, or 415 V a.c. three-phase.
1100--3 For protection against electric shock, the protective measures of obstacles and placing out of reach are
not permitted. Also, the protective measures of non -conducting location and earth -free local equipotential
bonding are not permitted
1100--4 Equipment installed on or above a jetty, wharf, pier or pontoon shall be selected with a degree of
protection adequate for the operational conditions and external influences, shall be suitable for use in the
presence of atmospheric corrosive or polluting substances and shall be protected against all kind of mechanical
damage by taking into considerations the m ovement of structures, presence of flammable fuel and the increased
risk of electric shock due to:
i) presence of water
ii) reduction in body resistance
iii) contact of the body with Earth potential.
1100--5 The following wiring systems shall be considered suitable for distribution circuits of marinas:
i) Underground cables
ii) Overhead cables or overhead insulated conductors
iii) Cables with copper conductors and thermoplastic or elastomeric insulation and sheath installed within
an appropriate cable management system taking into account external influences such as movement,
impact, corrosion and ambient temperature
iv) Mineral-insulated cables with a PVC protective covering
v) Cables with armouring and serving of thermoplastic or elastomeric material
vi) Other cables and materials that are no less suitable than those listed above.
1100--6 The following wiring systems shall not be used on or above a jetty, wharf, pier or pontoon:
i) Cables in free air suspended from or incorporating a support wire,
ii) Non-sheathed cables in cable management systems
iii) Cables with aluminium conductors
iv) Mineral insulated cables.
1100--7 Cables shall be selected and installed so that mechanical damage due to tidal and other movement of
floating structures is prevented. Cable management systems shall be installed to allow the drainage of water by
drainage holes and/or installation of the equipment on an incline.
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1100--8 Underground distribution cables shall, unless provided with additional mechanical protection, be
buried at a sufficient depth to avoid being damaged, e.g. by heavy vehicle movement.
NOTE - A depth of 0.5 m is generally considered as a minimum depth to fulfill this requirement.
1100--9 All overhead conductors shall be insulated. Poles and other supports for overhead wiring shall be
located or protected so that they are unlikely to be damaged by any foreseeable vehicle movement. Overhead
conductors shall be at a height above ground of not less than 6 m in all areas subjected to vehicle movement and
3.5 m in all other areas.
1100--10 Socket–outlets shall be protected individually by an RCD with a rated residual operating current not
exceeding 30 mA and an operating time not exceeding 40 ms at a residual current of 5 times the rated current.
Devices selected shall disconnect all poles, including the neutral.
1100--11 Each socket–outlet shall be protected by an individual excess current protection device. Also, a
fixed connection for supply to each houseboat shall be protected individually by an excess current protection
device.
1100--12 At least one means of isolation shall be installed in each distribution cabinet. This switching device
shall disconnect all live conductors including the neutral conductor. One isolating switching device for a
maximum of four socket-outlets shall be installed.
1100--13 Every socket -outlet shall be located as close as practicable to the berth to be supplied. Socket -
outlets shall be installed in the distribution board or in separate enclosures. In order to avoid any hazard due to
long connection cords, a maximum of four socket–outlets shall be grouped together in one enclosure.
NOTE - One step-by-step Instruction notice shall be placed in marinas adjacent to each group
of socket outlets giving the exact type of power supply available and describing how
to connect power supply to the on arrival and how to disconnect it before leaving.
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1105 MEDICAL LOCATIONS
1105--1 The electrical installations in medical locations must ensure safety of patients and medical staff. The
requirements stipulated herein are for hospitals, clinics, dental clinics, healthcare centres and dedicated medica l
rooms in the workplace. The requirements of this section do not apply to medical electrical equipment.
1105--2 In medical locations, the distribution system shall be designed and installed to facilitate the automatic
changeover from the main distribution network to the electrical safety source feeding essential loads.
1105--3 For protection against electric shock, the protective measures of obstacles and placing out of reach are
not permitted.
1105--4 As a method of protection against electric shock, exposed-conductive-parts of equipment, e.g.
operating theatre luminaires, shall be connected to the circuit protective conductor.
1105--5 In operating rooms, the measured resistance of the protective conductor between the earth terminal of
any socket -outlet (or fixed equipment) and any extraneous-conductive-part shall not exceed 0.2 Ohm and in
other rooms this shall not exceed 0.7 Ohm.
1105--6 In all medical locations, s pecial considerations have to be made concerning electromagnetic interference
(EMI) and electromagnetic compatibility (EMC).
1105--7 Electrical devices, e .g. socket -outlets and switches, insta lled below any medical-gas outlets for
oxidizing or flammable gases shall be located at a distance of at least 0.2 m from the outlet (centre to centre), so
as to minimize the risk of ignition of flammable gases.
1105--8 Plans of the electrical installation together with records, drawings, wiring diagrams and modifications
relating to the medical location, shall be provided. Information provided shall include but not be limited to:
(i) single-line overview diagrams show ing the distribution system of the normal power supply and
power supply for safety services in a single-line representation
(ii) distribution board block diagrams showing switchgear and controlgear and distribution boards in a
single-line representation
(iii) schematic diagrams of controls
(iv) the verification of compliance with the requirements of standards
(v) functional description for the operation of the safety power supply services and of the safety
power supply system.
1105-9 In medical locations at least two different sources of supply shall be provided. One of the sources
shall be connected to the electrical supply system for safety services. Automatic changeover devices shall be
arranged so that safe separation between supply lines is maintained.
1105--10 A power supply for safety services is required which will maintain the supply for continuous
operation for a defined period with in a pre -set c hangeover time. The safety power supply system shall
automatically take over if the voltage of one or more incoming live conductors, at the main distribution
board of the building, has dropped for more than 0.5 s and by more than 10% in regard to the nominal voltage.
1105--11 In case of a failure of the general power supply source, the power supply for safety services
shall be energized to feed the equipment with electrical energy for a defined period of time and within a
predetermined changeover period. Where socket-outlets are supplied from the safety power supply source they
shall be readily identifiable according to their safety services classification.
1105-12 In the event of a voltage failure on one or more line conductors at the distribution board, a safety
power supply source shall be used and be capable of providing power for a period of at least 3 h for the
following:
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(i) Luminaires of operating theatre tables
(ii) ME equipment containing light sources being essential for the application of the equipment,
e.g. endoscopes, including associated essential equipment, e.g. monitors
(iii) Life-supporting ME equipment.
The duration of 3 h may be reduced to 1h for items (ii) and (iii) if a power source meeting the requirements of
Regulation. The normal power supply shall be restored within a changeover period not exceeding 0.5 s.
1105--13 The following equipment shall be connected within 15 s to a safety power supply source capable of
maintaining it for a minimum period of 24 h, when the voltage of one or more live conductors at the main
distribution board for the safety services has decreased by more than 10% of the nominal value of supply
voltage and for a duration greater than 3 s:
(i) Emergency lighting and exit signs
(ii) Locations for switchgear and controlgear for emergency generating sets, for main
distribution boards of the normal power supply and for power supply for safety services
(iii) Rooms in which essential services are intended. In each such room at least one luminaire
shall be supplied from the power source for safety services
(iv) Locations of central fire alarm and monitoring systems
(v) Operating Rooms – a minimum of 90% of the lighting shall be supplied from the power source for
safety services and at least one luminaire shall be supplied from the power supply source for
safety services
The luminaires of the escape routes shall be arranged on alternate circuits.
1105--14 The following e quipment which is required for the maintenance of hospita l services s hall be
connected either automatically or manually to a safety power supply source capable of maintaining it for a
minimum period of 24 h:
(i) Sterilization equipment
(ii) Technical building installations, in particular air conditioning, heating and ventilation systems,
building services and waste disposal systems
(iii) Cooling equipment
(iv) Catering equipment
(v) Storage battery chargers.
1105--15 The following equipment shall also be connected to a safety service supply with a changeover period
not exceeding 15 s include:
(i) Selected lifts for firefighters
(ii) Ventilation systems for smoke extraction
(ii) Paging/communication systems
(iv) ME equipment used in Group 2 medical locations which serves for surgical or other
procedures of vital importance
(v) Electrical equipment of medical gas supply including compressed air, vacuum supply and narcosis
(anaesthetics) exhaustion as well as their monitoring devices
(vi) Fire detection and fire alarms
(vii) Fire extinguishing systems.
1105--16 Light fittings in operating rooms, anaesthetic area, recovery rooms and laboratories or where
chemical reactions occur shall be explosion proof type.
46
ELECTRICAL INSTALLATIONS IN SPECIAL LOCATIONS
1100 MARINAS AND SIMILAR LOCATIONS
1100--1 The scope here provides specific requirements only to circuits intended to supply electrical installation
in marinas or similar locations like, pleasure craft or houseboats and do not apply to the internal electrical
installations of any pleasure craft or houseboats.
1100--2 The nominal supply volt age of the installation for the supply to marinas or similar locations like,
pleasure craft or houseboats shall be 240 V a.c. single-phase, or 415 V a.c. three-phase.
1100--3 For protection against electric shock, the protective measures of obstacles and placing out of reach are
not permitted. Also, the protective measures of non -conducting location and earth -free local equipotential
bonding are not permitted
1100--4 Equipment installed on or above a jetty, wharf, pier or pontoon shall be selected with a degree of
protection adequate for the operational conditions and external influences, shall be suitable for use in the
presence of atmospheric corrosive or polluting substances and shall be protected against all kind of mechanical
damage by taking into considerations the m ovement of structures, presence of flammable fuel and the increased
risk of electric shock due to:
i) presence of water
ii) reduction in body resistance
iii) contact of the body with Earth potential.
1100--5 The following wiring systems shall be considered suitable for distribution circuits of marinas:
i) Underground cables
ii) Overhead cables or overhead insulated conductors
iii) Cables with copper conductors and thermoplastic or elastomeric insulation and sheath installed within
an appropriate cable management system taking into account external influences such as movement,
impact, corrosion and ambient temperature
iv) Mineral-insulated cables with a PVC protective covering
v) Cables with armouring and serving of thermoplastic or elastomeric material
vi) Other cables and materials that are no less suitable than those listed above.
1100--6 The following wiring systems shall not be used on or above a jetty, wharf, pier or pontoon:
i) Cables in free air suspended from or incorporating a support wire,
ii) Non-sheathed cables in cable management systems
iii) Cables with aluminium conductors
iv) Mineral insulated cables.
1100--7 Cables shall be selected and installed so that mechanical damage due to tidal and other movement of
floating structures is prevented. Cable management systems shall be installed to allow the drainage of water by
drainage holes and/or installation of the equipment on an incline.
43
1100--8 Underground distribution cables shall, unless provided with additional mechanical protection, be
buried at a sufficient depth to avoid being damaged, e.g. by heavy vehicle movement.
NOTE - A depth of 0.5 m is generally considered as a minimum depth to fulfill this requirement.
1100--9 All overhead conductors shall be insulated. Poles and other supports for overhead wiring shall be
located or protected so that they are unlikely to be damaged by any foreseeable vehicle movement. Overhead
conductors shall be at a height above ground of not less than 6 m in all areas subjected to vehicle movement and
3.5 m in all other areas.
1100--10 Socket–outlets shall be protected individually by an RCD with a rated residual operating current not
exceeding 30 mA and an operating time not exceeding 40 ms at a residual current of 5 times the rated current.
Devices selected shall disconnect all poles, including the neutral.
1100--11 Each socket–outlet shall be protected by an individual excess current protection device. Also, a
fixed connection for supply to each houseboat shall be protected individually by an excess current protection
device.
1100--12 At least one means of isolation shall be installed in each distribution cabinet. This switching device
shall disconnect all live conductors including the neutral conductor. One isolating switching device for a
maximum of four socket-outlets shall be installed.
1100--13 Every socket -outlet shall be located as close as practicable to the berth to be supplied. Socket -
outlets shall be installed in the distribution board or in separate enclosures. In order to avoid any hazard due to
long connection cords, a maximum of four socket–outlets shall be grouped together in one enclosure.
NOTE - One step-by-step Instruction notice shall be placed in marinas adjacent to each group
of socket outlets giving the exact type of power supply available and describing how
to connect power supply to the on arrival and how to disconnect it before leaving.
44
1105 MEDICAL LOCATIONS
1105--1 The electrical installations in medical locations must ensure safety of patients and medical staff. The
requirements stipulated herein are for hospitals, clinics, dental clinics, healthcare centres and dedicated medica l
rooms in the workplace. The requirements of this section do not apply to medical electrical equipment.
1105--2 In medical locations, the distribution system shall be designed and installed to facilitate the automatic
changeover from the main distribution network to the electrical safety source feeding essential loads.
1105--3 For protection against electric shock, the protective measures of obstacles and placing out of reach are
not permitted.
1105--4 As a method of protection against electric shock, exposed-conductive-parts of equipment, e.g.
operating theatre luminaires, shall be connected to the circuit protective conductor.
1105--5 In operating rooms, the measured resistance of the protective conductor between the earth terminal of
any socket -outlet (or fixed equipment) and any extraneous-conductive-part shall not exceed 0.2 Ohm and in
other rooms this shall not exceed 0.7 Ohm.
1105--6 In all medical locations, s pecial considerations have to be made concerning electromagnetic interference
(EMI) and electromagnetic compatibility (EMC).
1105--7 Electrical devices, e .g. socket -outlets and switches, insta lled below any medical-gas outlets for
oxidizing or flammable gases shall be located at a distance of at least 0.2 m from the outlet (centre to centre), so
as to minimize the risk of ignition of flammable gases.
1105--8 Plans of the electrical installation together with records, drawings, wiring diagrams and modifications
relating to the medical location, shall be provided. Information provided shall include but not be limited to:
(i) single-line overview diagrams show ing the distribution system of the normal power supply and
power supply for safety services in a single-line representation
(ii) distribution board block diagrams showing switchgear and controlgear and distribution boards in a
single-line representation
(iii) schematic diagrams of controls
(iv) the verification of compliance with the requirements of standards
(v) functional description for the operation of the safety power supply services and of the safety
power supply system.
1105-9 In medical locations at least two different sources of supply shall be provided. One of the sources
shall be connected to the electrical supply system for safety services. Automatic changeover devices shall be
arranged so that safe separation between supply lines is maintained.
1105--10 A power supply for safety services is required which will maintain the supply for continuous
operation for a defined period with in a pre -set c hangeover time. The safety power supply system shall
automatically take over if the voltage of one or more incoming live conductors, at the main distribution
board of the building, has dropped for more than 0.5 s and by more than 10% in regard to the nominal voltage.
1105--11 In case of a failure of the general power supply source, the power supply for safety services
shall be energized to feed the equipment with electrical energy for a defined period of time and within a
predetermined changeover period. Where socket-outlets are supplied from the safety power supply source they
shall be readily identifiable according to their safety services classification.
1105-12 In the event of a voltage failure on one or more line conductors at the distribution board, a safety
power supply source shall be used and be capable of providing power for a period of at least 3 h for the
following:
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(i) Luminaires of operating theatre tables
(ii) ME equipment containing light sources being essential for the application of the equipment,
e.g. endoscopes, including associated essential equipment, e.g. monitors
(iii) Life-supporting ME equipment.
The duration of 3 h may be reduced to 1h for items (ii) and (iii) if a power source meeting the requirements of
Regulation. The normal power supply shall be restored within a changeover period not exceeding 0.5 s.
1105--13 The following equipment shall be connected within 15 s to a safety power supply source capable of
maintaining it for a minimum period of 24 h, when the voltage of one or more live conductors at the main
distribution board for the safety services has decreased by more than 10% of the nominal value of supply
voltage and for a duration greater than 3 s:
(i) Emergency lighting and exit signs
(ii) Locations for switchgear and controlgear for emergency generating sets, for main
distribution boards of the normal power supply and for power supply for safety services
(iii) Rooms in which essential services are intended. In each such room at least one luminaire
shall be supplied from the power source for safety services
(iv) Locations of central fire alarm and monitoring systems
(v) Operating Rooms – a minimum of 90% of the lighting shall be supplied from the power source for
safety services and at least one luminaire shall be supplied from the power supply source for
safety services
The luminaires of the escape routes shall be arranged on alternate circuits.
1105--14 The following e quipment which is required for the maintenance of hospita l services s hall be
connected either automatically or manually to a safety power supply source capable of maintaining it for a
minimum period of 24 h:
(i) Sterilization equipment
(ii) Technical building installations, in particular air conditioning, heating and ventilation systems,
building services and waste disposal systems
(iii) Cooling equipment
(iv) Catering equipment
(v) Storage battery chargers.
1105--15 The following equipment shall also be connected to a safety service supply with a changeover period
not exceeding 15 s include:
(i) Selected lifts for firefighters
(ii) Ventilation systems for smoke extraction
(ii) Paging/communication systems
(iv) ME equipment used in Group 2 medical locations which serves for surgical or other
procedures of vital importance
(v) Electrical equipment of medical gas supply including compressed air, vacuum supply and narcosis
(anaesthetics) exhaustion as well as their monitoring devices
(vi) Fire detection and fire alarms
(vii) Fire extinguishing systems.
1105--16 Light fittings in operating rooms, anaesthetic area, recovery rooms and laboratories or where
chemical reactions occur shall be explosion proof type.
46