Diagnosis of electrical faults; Electric appliance installation; Electric appliance installation and repair; Electric appliance repair; Electrical apparatus installation; Electrical apparatus repair; Electrical installation services; Electrical wiring services; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling; Repair of electrical appliances; Maintenance, installation and repair of electrical items and equipment; Maintenance and repair of electrical apparatus; Interference suppression in electrical apparatus; Installation of electrical apparatus