It was often used to provide additional outlets so may still be present in conjunction with conduit cabling.
The first villas were lit with candles and paraffin lamps.
In the 1870s, production of coal gas occurred in most large and many small towns.
Following this, contractors have a six month transition period to get up to speed with the changes and can design, install and certify to either the new or previous standard.
1st July 2015 – From this date it is a requirement that all electrical installations designed and periodically inspected comply with the updated regulations.
(MORE: Building Regulations Guide) You should be able to tell if a house has been rewired recently by inspecting exposed parts of the wiring and by the electricity meter and fuse box (now known as the consumer unit).
You can ask to do this when being shown around a property you are thinking of buying, or by inspecting your home.Obviously millions of existing cables had the existing red, black and yellow/green colours installed and to limit the number of installations where new circuit additions would mean mixing the colours, it was agreed that (even though the new regulations did not become compulsory until 31st March 2006) from 31st May 2004 the new cable colours could be used.On this date the Institute of Electrical Engineers published Amendment 2 to British Standard 7601 (The wiring regulations).Houses had a very small number of electrical outlets.By the 1930s, cloth wrapped wiring (with an earth wire) was used without conduit.28 years ago the United Kingdom agreed to adopt the colour blue for neutral conductors in flexible cables and flexible cords usually used for non fixed installations.