Knowing the difference between imperial cable and metric?

[7029 Dave]

About the only thing I've not still found in use

Last time I worked on it was the 80s, we rewired a few old big houses in Highgate London.

 

[Mike P]

The other problem with cable is when it was run in the cavity and the house then had cavity wall insulation. I have removed cable that was just copper no insulation!