SCHEDULE 3DESCRIPTIONS OF BUILDING AND WORK, INCLUDING THE PROVISION OF SERVICES, FITTINGS AND EQUIPMENT, NOT REQUIRING A WARRANT
A. On condition that types 1-23 in all respects and/or in the manner of their fitting meet any relevant requirement of the regulations.22
An electrical installation, including a circuit for telecommunication, alarm purposes or for the transmission of sound, vision or data, which operates at extra-low voltage (not exceeding 50 volts alternating current or 120 volts direct current, measured between conductors or to earth) and which is not connected directly or indirectly to an electricity supply which operates at a voltage higher than either of those specified above.