http://www.legislation.gov.uk/uksi/1994/3021/contents/made

The Electricity Supply (Amendment) (No. 2) Regulations 1994

Electricity supply

Electrical installation and servicing

King's Printer of Acts of Parliament

2017-05-03

ELECTRICITY

These Regulations amend regulation 30 of the Electricity Supply Regulations 1988 (“the 1988 Regulations”) to require every supplier of low voltage electricity to consumers to supply, unless otherwise agreed between the supplier and the consumer, at 230 volts (reduced from 240 volts) between the phase and neutral conductors at the supply terminals, or at a voltage not exceeding ten per cent above (increased from six per cent) or six percent below that voltage. These amendments implement the first transitional stage for European harmonisation of nominal voltages and voltage tolerance ranges proposed in CENELEC (European Committee for Electrotechnical Standardisation) harmonisation document HD 472 S1: 1988 entitled Nominal voltages for low voltage public electricity supply systems and published in the United Kingdom by the British Standards Institution as BS 7697: 1993. The standard may be obtained from the British Standards Institution at the address below at a cost of £12.25 for members and £24.50 for non-members.