Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition

26I Lightning Protection Installation
Lightning protection installations should be installed to IEC 62305, BS EN
62305, AS/NZS 1768, NFPA 780 or equivalent.
26J Rising Mains Installation
(a) Any building of more than four floors including the ground floor should
be provided with 3-phase electrical rising mains with a 3-phase 4-wire
tee-off at each floor unless otherwise agreed by the electricity supplier.
(b) The design of the rising mains installation should be agreed by the
electricity supplier.
(c) Separate riser earthing conductors should be provided to earth all units
therein. The minimum cross-sectional area of riser earthing conductor
should be 70 mm2 for copper and 150 mm2 for aluminium.
(d ) The consumer’s main connection between the electricity supplier’s meter
and the consumer’s main switch should be installed and maintained by
the consumer and should be not less than 4 mm2 stranded copper
conductors.
(e) In multi-consumer premises a device capable of both isolating and
switching the full load current of the whole installation should be
provided for each consumer at a position immediately before the
electricity supplier’s meter. For a single phase installation this device
should be of double-pole type interrupting all live conductors.
(f ) In multi-consumer premises no part of the communal installation should
pass through any individual consumer’s unit within the building.
26K Temporary Supply Installation for Construction and
Demolition Sites or Repair and Testing Purposes
(1) Scope
The particular requirements of this Code should apply to temporary
installation providing supplies during the execution of construction or
demolition works, or for repair and testing purposes. This type of
installation should not be used as permanent supply. Approval should be
obtained from the electricity supplier
(2) General
(a) This type of installation should comply with the requirement of the
Wiring Regulations.
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