Re: Earthing vintage brass bankers desk light
If all metal parts of the lamp are in good electrical contact one earthing point suffices. (This can occasionally be a problem where different metals are involved and corrosion sets in)
Finding the smaller diameters of 3 core cable IS a problem these days- as is avoiding getting the ends twisted on final assembly.
Needless to say there are extra considerations if you are selling the lamp rather than keeping it.
Dave
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