You need to run a 1.5mm² twin and earth from the C.U. to the first smoke alarm and then 1.5mm² three core and earth from the first alarm in a daisy chain to each subsequent alarm.
Make sure all cables are run with in safe zones if they are to be concealed within the fabric of the building...
You don't use dual RCD boards on commercial jobs.
What makes you think all circuits will require RCD protection anyway?
Schneider is the only make of board to use on commercial installations.
Are you sure you're really competent to be undertaking this job?
Have you really got nothing better to do with your life than to whinge about people using smiley faces in their posts? :? :? :?
Just who do you think you are?
There's a guy that comes in our pub who struts about like he owns the place giving it the big I am. Nobody likes him either.
Ah ha yet another armchair electrician on here who doesn't have the first clue what actually happens in the real world, but it doesn't stop him commenting on a subject he knows absoloutly nothing about.
Hello Moderator. Please can you tell me why my post was deleted? All I did was paraphrase ban all sheds, and my post was deleted, yet where he actually said it, it is allowed to stay?
just been in the bath and been getting shocks from the case of my toaster onto my wrist, didnt happen to my fingers though, just got out now, unplugged it tried touching it and no shock...
Am I really stupid?
For a split phase supply. As Dingbat has said, you're wrong.
Anyway why would you care? As you keep pointing out that BS 7671 is not law and you don't work to it.