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
Dronfield is a town in North East Derbyshire, England, which includes Dronfield Woodhouse and Coal Aston. It lies in the valley of the River Drone between Chesterfield and Sheffield. The Peak District National Park is three miles (4.8 km) to the west. The name means open land infested with drones (male bees).
The town existed before the 1086 Domesday Book, and has a 13th-century parish church. In 1662, Charles II granted the town a market, although this later ceased. The industrial history of the town includes coal mining, the wool trade, the production of soap and steel, and engineering. Today a range of manufacturing firms still operate in the town.
Dronfield's population increased dramatically in the post-war years from 6,500 in 1945 to its current size of just over 21,000.
The football ground to the north of the town is currently the home of Sheffield F.C., the world's oldest football club.