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GENERAL ELECTRICAL SPECIFICATION
Version 2014-2
Cable insulation shall be identified in colours to meet with the new harmonised colours of
BS 7671.
2.9.5.2 Installation
Wiring of conduits installed within the carcass of the building shall not be installed until
the plaster and/or screed has dried and set and the interior of the conduit is dry.
The number of cables which are to be drawn into any conduit must be such that it allows
easy drawing-in and in no circumstances shall it be in excess of the maximum of 45%. To
assist drawing-in the cables shall be liberally smeared with French chalk. All cable reels
shall be arranged on a stand or support so as to allow them to revolve freely as cables are
drawn-in to the conduit. On no account shall cables be allowed to spiral off the reel.
Segregation of extra low voltage cables from low voltage cables is required as is that of
circuits in categories 1,2 & 3.
Connections on all conductors shall only be made at an accessories/switch gear positions.
No other joints shall be allowed.
Cables shall not pass through equipment.
A single conductor in a conduit will not be permitted. The phase and neutral conductors
of a single phase system shall be enclosed in the same conduit, or trunking.
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