British StandardBS 7671"Requirements for Electrical Installations. IET Wiring Regulations", informally called in the electrical communityThe "Regs", is the national standard in theUnited Kingdomfor electrical installation and the safety ofelectrical wiringin domestic, commercial, industrial, and other buildings, also in special installations and locations, such as marinas or caravan parks and medical locations
In general, BS 7671 applies to circuits supplied at nominal voltages (Uo) up to and including 1000 volts AC or 1500 volts DC. The standard therefore covers the Extra Low Voltage (ELV) range (0-50V AC, 0-125V DC), and the Low Voltage (LV) range (50-1000V AC, 125-1500V DC). The frequencies covered for AC are 50 Hz, 60 Hz, and 400 Hz, used in the UK for houses, offices, and commerce. It did not become a recognizedBritish Standarduntil the publication of the 16th edition in 1992. The standard takes account of the technical substance of agreements reached inCENELEC.
The current version is BS 7671:2018 (the 18th Edition) issued in 2018 and came into effect from 1 January 2019.Amendment 1 to the 18th Edition was published in February 2020 but the only changes were to section 722 (Electric Vehicle Charging Installations). These changes came into immediate effect upon publication release, unlike previous amendments where 6 months elapsed before changes became compliant.BS 7671 is also used as a national standard byMauritius,St Lucia,Saint Vincent and the Grenadines,Sierra Leone,Singapore,Sri Lanka,Trinidad and Tobago,Uganda,Cyprus, and several other countries, which base their wiring regulations on
Leicester (About this soundlisten) LEH-ster) is a city and unitary authority area in the East Midlands of England, and the county town of Leicestershire. The city lies on the River Soar and close to the eastern end of the National Forest. It is to the north-east of Birmingham and Coventry, south of Nottingham, and west of Peterborough.
The 2016 mid year estimate of the population of the City of Leicester unitary authority was 348,300, an increase of approximately 18,500 (Increase 5.6%) from the 2011 census figure of 329,839, making it the most populous municipality in the East Midlands region. The associated urban area is also the 11th most populous in England and the 13th most populous in the United Kingdom.
Leicester is at the intersection of two major railway lines—the north–south Midland Main Line and the east/west Birmingham to London Stansted CrossCountry line; as well as the confluence of the M1/M69 motorways and the A6/A46 trunk routes. Leicester is the home to football club Leicester City and rugby club Leicester Tigers.