Bath light switch, wiring question

[jon ccc]

The current bathroom light wall switch is outside the bathroom. I wanted to install a Crabtree pull cord light switch inside the bathroom. [to replace the wall switch. edit at 09:33]
However when i was noting down the wiring of the lighting circuitry. I noticed that the current light switch appears to be wired wrongly [I did not do the wiring]. pls see enclosed diagram

The brown wire goes to the Commons connector on the Wickes Bath Light wall switch.
The blue wire goes to the 'one way' connector on the Wickes Bath light wall switch.
is this correct?
and so would the brown wire go to commons connector on the Crabtree pull switch, and the blue wire to the L2?

 

[PrenticeBoyofDerry]

That is one way of doing this and not uncommon on a one way way function. The blue core is the switch line and should be identified as this by it being marked correctly, ideally by a brown coloured sleeve over the blue insulation at all terminals/joints.
Can I assume you are removing this wall switch, then installing a pull cord switch as a swap over, rather than a two way function?

As it seems, you have two versions of BS7671 wiring colours present, it is likely that the originally/previously a pull cord switch existed.
If it is to remain a one way switch, then just copy the cables to terminals Com/L and L1. Although any combination of COM to L1 or L2 will work.

 

[jon ccc]

Can I assume you are removing this wall switch, then installing a pull cord switch as a swap over, rather than a two way function?

hi, thanks for replying.
yes i am planning on removing the wall switch. ive editted the original post to clarify this.

If it is to remain a one way switch, then just copy the cables to terminals Com/L and L1. Although any combination of COM to L1 or L2 will work.

thats excellent, thanks.
i had been worrying that the wall switch had been secretly wired wrongly for years, and i have avoided a mishap by luck.

 

[flameport]

i had been worrying that the wall switch had been secretly wired wrongly for years, and i have avoided a mishap by luck.

A switch connects two wires together in one position, and separates them in the other position.
The colour of the wires and which terminal is connected where makes no difference to anything.