4321 Electrical installation

This subcategory includes:

• special trade installation works involving the installation of basic electrical wiring circuits or fittings in buildings and other construction projects
• electrical works arising from the installation of appliances
• electrical wiring and fitting works for emergency power supply systems
• installation works for fire alarm systems and burglar alarm systems at the construction site
• installation works of all types of residential antenna including satellite antenna
• installation works of cable television lines within a building
• electrical installation works of telecommunications wiring
• electrical installation works of other electrical equipment, including electric solar energy collectors and baseboard heaters, of buildings
• installation works of electricity meters
• installation works of illumination and signalling systems for roads, airports and harbours

This subcategory excludes:

• installation works of electric motors, generators and transformers in power stations, see 33.20.50
• installation works for control and safety systems for railway tracks, see 42.12.20
• sprinkler installation works, see 43.22.11
• installation works for heating equipment, see 43.22.12
• fireproofing works, see 43.29.11