R-1 — لوائح التركيبات الكهربائية
710 الوصلات والتوصيلات والنهايات
الصفحة 24 في الوثيقة الأصلية
عرض PDF710 JOINTS, CONNECTIONS AND TERMINATIONS
710-- 1 Joints shall be avoided in conductors of all sizes wherever possible, and in final circuits feeding two or
more lights, switches, sockets and/or other accessories, the loop-in system of wiring shall be employed.
710-- 2 Where joints are essential, they shall be housed in purpose made boxes and/or otherwise readily accessible
for inspection t hroughout the l ife of the installation. Under no circumstances shall joints be drawn int o conduits or
positioned in the thickness of walls, ceiling or floor, etc., or behind plaster, tile or panel finishes, etc.
710--3 Joints in cable conductors shall be mechanically and electrically sound and shall be made by
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soldering, brazing, welding or mechanical clamps or be of the compression type. All mec hanical clamps and
compression type sockets shall securely retain all the wires of the conductors.
710-4 Every joint in a cable shall be provided with insulation not less effective than that of the cable cores and
shall be protected against moisture and against mechanical damage. Soldering fluxes which remain acidic or
corrosive at the completion of the soldering operation shall not be used.
710-5 Joints in earth continuity conductors, earth leads, etc., shall be made in a simi lar manner to those in current
carrying conductors.
710-6 Joints in flexible cables and cords shall not be permitted.
710-7 All terminations of cable conductors shall be mechanically and electrically sound and every termination
shall be made by means of a terminal, soldering socket or compression t ype of socket. The termination
arrangement shall contain and anchor all the wires of the conductor and shall not impose a ny serious mechanical
strain on the terminal or socket.
710-8 At all terminations of cables, the insulation shall be neatly stripped without nicking the strands of the
conductor. The conductor shall be tightly twisted and doubled backed (where space is available in the terminal)
before being clamped with pinching screws. Where two or more cables are looped into the sa me terminal, their
conductors shall be tightly twisted together before being inserted into t he terminal. In no case shall bare
conductor be allowed to project beyond any insulated shrouding or mounting of a live terminal.
710-9 At all terminations of wires and cables, sweating sockets or cable lugs shall be used unless adequate
pinching screw terminals or clamps are provided and their use approved by the Engineer. In all such cases, the
cable ends shall be tinned solid. Such lugs and sockets shall be connected in a manner that they are and will remain
both mechanically and electrically sound and efficient. Only acid -free soldering fluxes shall be used. Any
insulation and/or prote ctive covering on the cables damaged by heat of the soldering shall be replaced by
suitable and approved insulating sleeves.
710-- 1 Joints shall be avoided in conductors of all sizes wherever possible, and in final circuits feeding two or
more lights, switches, sockets and/or other accessories, the loop-in system of wiring shall be employed.
710-- 2 Where joints are essential, they shall be housed in purpose made boxes and/or otherwise readily accessible
for inspection t hroughout the l ife of the installation. Under no circumstances shall joints be drawn int o conduits or
positioned in the thickness of walls, ceiling or floor, etc., or behind plaster, tile or panel finishes, etc.
710--3 Joints in cable conductors shall be mechanically and electrically sound and shall be made by
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soldering, brazing, welding or mechanical clamps or be of the compression type. All mec hanical clamps and
compression type sockets shall securely retain all the wires of the conductors.
710-4 Every joint in a cable shall be provided with insulation not less effective than that of the cable cores and
shall be protected against moisture and against mechanical damage. Soldering fluxes which remain acidic or
corrosive at the completion of the soldering operation shall not be used.
710-5 Joints in earth continuity conductors, earth leads, etc., shall be made in a simi lar manner to those in current
carrying conductors.
710-6 Joints in flexible cables and cords shall not be permitted.
710-7 All terminations of cable conductors shall be mechanically and electrically sound and every termination
shall be made by means of a terminal, soldering socket or compression t ype of socket. The termination
arrangement shall contain and anchor all the wires of the conductor and shall not impose a ny serious mechanical
strain on the terminal or socket.
710-8 At all terminations of cables, the insulation shall be neatly stripped without nicking the strands of the
conductor. The conductor shall be tightly twisted and doubled backed (where space is available in the terminal)
before being clamped with pinching screws. Where two or more cables are looped into the sa me terminal, their
conductors shall be tightly twisted together before being inserted into t he terminal. In no case shall bare
conductor be allowed to project beyond any insulated shrouding or mounting of a live terminal.
710-9 At all terminations of wires and cables, sweating sockets or cable lugs shall be used unless adequate
pinching screw terminals or clamps are provided and their use approved by the Engineer. In all such cases, the
cable ends shall be tinned solid. Such lugs and sockets shall be connected in a manner that they are and will remain
both mechanically and electrically sound and efficient. Only acid -free soldering fluxes shall be used. Any
insulation and/or prote ctive covering on the cables damaged by heat of the soldering shall be replaced by
suitable and approved insulating sleeves.