Apprentice needs help three plate wiring

[Octopus]

Wiring using 3 plate makes life difficult at the fitting unless it is a ceiling rose, far easier if there is only 1 cable to terminate, I wire every light back indivdually to either a switch or jb, chopping a deep box in only takes a few extra minutes​

So where do you put the JB's you install?

 

[Rampantchilli]

So where do you put the JB's you install?

in the back of the deep switch box, lol

 

[Rampantchilli]

A long time ago we fired in some T&E for a kitchen ring turned it on, without any tests as we thought our work was beyond reproach, and the RCD tripped out.
Eventually got the tester out of the van and checked the IR of each leg and found that the cable neutral had migrated through the insulation and was in contact with the cpc. Bloody annoying !
I know it has only happened to me once in 30 years. How many of you check the cable before chopping it up into pieces ?

A very good friend of mine had a similar problem, took a lot of head scratching to work it out, turned the colour changed conductor mid drum, so blue became brown and vice versa, very dangerous really, luckily he wired it in the ring not a radial so came to light quickly when testing, although still took while to find

 

[7029 dave]

I would say its a switch wire at fault, either at the rose/fitting or switch,but as said if you done your dead testing prior , should have picked it up.