Electrical apparatus installation; Electrical engineering services (construction); Electrical installation services; Electrical wiring services; Maintenance, installation and repair of electrical items and equipment; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling; Installation and repair of telecommunication apparatus; Installation of apparatus for air-conditioning; Installation of cable television systems; Installation of central vacuum cleaning systems; Installation of electricity generators; Installation of instrumentation systems; Installation of lighting systems; Installation of security systems; Installation of solar energy systems; Installing of telecommunications networks; Maintenance and servicing of security alarms; Services of electricians; Electric appliance installation