maintenance and repair of electrical appliances; repair and maintenance of electrical appliances; services of electricians; installation of electrical wiring for buildings; electrical wiring services; installation, maintenance and repair of electrical devices; repair of electrical equipment and electrotechnical installations; repair of electrical appliances; installation, maintenance and repair of electrical and electronic apparatus and equipment; installation and repair of electrical appliances; repair of electrical equipment; installation of electrical wiring; providing information relating to the installation of electrical apparatus; installation, maintenance and repair of electrical equipment; renovation, repair and maintenance of electrical wiring; electrical installation services; advisory services relating to the maintenance and repair of mechanical and electrical equipment; installation of electrical appliances; providing information relating to the repair or maintenance of consumer electrical appliances; installation, maintenance and repair of apparatus for supplying electricity; electrical equipment repair