Electrical Question :Kill Switch ? .. is the amps to high ?

I have a Breaker on my main board that was for a shower in the bathroom (40amp) its wirerd to the pullcord switch in the bathroom but is not in use , Could i use it to power my lamp and blower fan in my room ...and my extraction fan in the loft ? or is the amps to high ?
I would like to run from the pull cord , Across my loft to a double socket , One used to feed my extraction fan and one spare for a grow box , then run from that socket down into my room to another double socket to power my lamp and blower fan
Here is a rough diagram : http://i45.tinypic.com/30m9ug6.jpg
I would like the pullcord swith to be a kill switch but im worried that it may be to high an ampage for some of the things it will be feeding and thus heat up the cable and or blast the things connected to it
Any help would be appriciated , thanks for taking the time to help me out

i dont think the actual switch will carry that power.







there is one way to find out.

most switches, etc. have a min rating of 15A. Im not saying this one does, it could be from the age of the dinos, so its your call. Fire is hot and it burns things.

Got a picture of the breaker? I'd guess with a 40A breaker you're bathroom is probably running a 110 leg off something else, possibly your water heater.

It's pretty unusual to have a forty amp breaker serving a bathroom, (at least in the US); 15 and 20 amp circuits are the norm for outlet and lighting circuits. The fact that it's a forty amp breaker means that it probably serves something other than just the bathroom, like a water heater or some other appliance. Nevertheless, it's most likely that the fans you want to connect to that circuit will not overload it; the way to find out for sure would be to turn everything on and measure the current at the breaker using a clamp-on ammeter. If you dont' have an ammeter, then just hook up the fans temporarily to the circuit with everything on and see if the breaker trips. I think it's a bad idea to use the light fixture for a cut off, though, since most light fixtures aren't designed to carry much load. You'd be better off replacing the fixture with a junction box and continuing your wiring to its destination using regular 12-2 or 14-2 electrical cable. Don't skimp on the wiring because crappy wiring causes fires and you may want to add more stuff onto that circuit later.

Even a water heater usually draw 20A, i can't see how a 40A circuit would feed a single bathroom.
A picture of the panel would help, and if you turn that *40A* breaker off, doe's anything else than the bathroom turns off ??

add up al your amps on what you are going to run. most switched and sockets are rate 15AMPS. just use the breaker as a shut off.

that breaker could be to a wall heater. most are 240 for the bathroom. some 110, but most are the 240. you get a higher heater wattage with the 240. i think he is trying to wire in circuit some 110 stuff, into a 240 line. how many hots you got? that will tell you.

Hey Guys Thanks for the input ...it's really appriciated

Ok just to clear something up ... Im a UK resident hence the higher voltages

Ok so i see that the actual pullswitch may be a weak link ( Noted ) The feed from the switch was down into where the old boiler used to be ( that has its own feed now ) so the old wireing was pulled out long ago ... so i just have power to the actual switch and thats where it ends .

It was just an idea for a quick shut off if i needed it to kill any noise should i get a knock at the door ... But as i see now it might not have been the best idea

I will look at another alternative , maybe wire off from the breaker ( miss out the switch ) and run to a higher rated switch box ( im sure i can get one cheap enough )

Thank you all for your help