Maintenance and repair of electrical apparatus; Disconnecting unused service lines (eg gas, mains water, electricity); Electric appliance installation; Electric appliance installation and repair; Electric appliance repair; Electrical apparatus installation; Electrical apparatus repair; Installation of audio electrical apparatus; Installation of electrical apparatus; Electrical engineering services (construction); Electrical installation services; Electrical wiring services; Hydroelectric power station construction services; Installation and repair of telecommunication apparatus; Installation of cable television systems; Interference suppression in electrical apparatus; Installing of electronic communications networks; Maintenance and repair of electronic apparatus; Maintenance and repair of electronic installations; Maintenance of electronic measuring devices; Maintenance of electronic monitoring devices; Maintenance of electronic testing devices; Maintenance, installation and repair of electrical items and equipment; Repair of electrical appliances; Repair of electronic apparatus; Repair of electronic business equipment; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling; Services of electricians; Television equipment installation and repair; Telephone installation; Telephone installation and repair