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Last edited 17 Feb 2021
Earthing refers to ‘…the wires joining the components at the electrical distribution centre. The early forms of earthing wires were unsheathed then later covered with green rubber, then green plastic. In 1977 the colour convention changed and all wires had to be coloured green and yellow.’
Ref English Housing Survey, Profile and condition of the English housing stock, 2018-19, Published by the Ministry of Housing, Communities & Local Government in August 2020 suggests:
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