 Working out how old an installation is
Does anyone out there know, when the major material changes in Uk electrical installations took place, i.e:
when lead cable stopped being used
when rubber cable stopped being used
when the earth colour changed from solid green to green and yellow
insulation on live and neutral pins of plug tops
flex colours changed from red and black to brown and blue
stranded earth in T&E cables
Cheers
Alan.
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