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7781 Cable support and protection (0)
Cable support and duct systems, including metallic and non-metallic, conduits, trays, ladders, ducts, skirting ducts, trunking, catenaries, pits, boxes, covers, etc. Including systems for use both within buildings, externally and underground.
7785 Lightning protection (1)
Lightning Protection systems including air terminals, independent down-conductors, equipotential bonding conductors, earthing electrodes and associated components.
7788 Miscellaneous electrical systems (0)
Supply and installation of, sundry or special, electrical systems, components and items of electrical systems, such as special cabling, equipment, accessories, etc., which are supplied or not supplied with the items to which they relate
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