I generally will do simple wiring but today went to change a pendant light to a ceiling mounted one, I have three hefty black cables and a single grey one and three dark green earths.
The wiring colours are pretty random in this house circa 1955!
I guess i need to put these into a junction box and would use a 20 amp due to the size of the wires with a 1.5 mm flex going to the light.
Q1 which is live and neutral in the old wiring
Q2 is it ok to put the junction box in the ceiling void ( fixed to joist )
Q3 is junction box and flex size ok.
Advice gratefully received