Gents,
I want an over-run extractor fan to come on when the shower pull cord is pulled on, then run on for a timed period after the shower pull cord is 'pulled off' (snigger snigger).
My solution:
The shower circuit is currently run in 10mm t&e. Take a 10mm t&e feed off the permanent live & permanent neutral (ie the feed to the shower isolator), plus a 10mm feed off the switched live (ie the load live at the shower isolator). Bring these three conductors to a db, and fuse down the lives to 6a via two mcb's (one each for the perm live and the switched live). Then take a 1mm 3 core out of the db (two lives via the breakers, the neutral connected directly to the incoming 10mm neutral) to the over-run extractor fan - first stopping off at a triple pole isolator.
Sound safe / within regs?
Any advice would be greatly appreciated. Many thanks.
I want an over-run extractor fan to come on when the shower pull cord is pulled on, then run on for a timed period after the shower pull cord is 'pulled off' (snigger snigger).
My solution:
The shower circuit is currently run in 10mm t&e. Take a 10mm t&e feed off the permanent live & permanent neutral (ie the feed to the shower isolator), plus a 10mm feed off the switched live (ie the load live at the shower isolator). Bring these three conductors to a db, and fuse down the lives to 6a via two mcb's (one each for the perm live and the switched live). Then take a 1mm 3 core out of the db (two lives via the breakers, the neutral connected directly to the incoming 10mm neutral) to the over-run extractor fan - first stopping off at a triple pole isolator.
Sound safe / within regs?
Any advice would be greatly appreciated. Many thanks.