these things make diagnosing the problem child's play:
http://www.tlc-direct.co.uk/Main_Index/Test_Meters_Index/Ring_Main_Tester/index.html
you might have to temporarily wire a socket in place of the light fitting to use it
As others have said, if the 40mm pipe can handle the volume then the 100mm pipe isn't going to have a problem!
area of a circle = pi x r x r (sorry dunno how to get a little squared symbol!)
area of cross section of 4cm pipe = 13cm2
area of cross section of 10cm pipe = 79cm2
Surely not? The fuses wouldn't both er, fuse, at the same time, since no two fuses are going to be exactly the same one will blow before the other. However, your point still stands.
15A sockets? is this some kind of sparky "in-joke"??!!
(yes I know there is such a thing as a 15A socket, but why on earth would you want one in the kitchen in this millennium!?)
sounds like you have two seperate problems here.
r.e. the post title sounds like you have a crack in the bowl somewhere, take a really close look, and have a peer under the flooring to see if you can see any dampness down there
Was chatting to my auntie yesterday and she said she had a problem with her expansion tank overflowing recently, plumber charged £110/hr! Is this a typical price? If so I'm glad we're renting and that the landlord has to pay for all the work!
The reason rads go under the windows is so you don't get a circulating draught. Heat rises, cold falls. If you put the rad on the side of the room opposite the window you get a circulation of heat around the room that will give you a cold floor and cold draught around your feet.
Putting...
bleeding is always a good start!
procedure:
1. buy a radiator key
2. have an old dishcloth or wad of tissue to hand to catch any water that dribbles out
3. insert radiator key
4. turn gently to open valve, allow any air/gases to hiss out
5. when water dribbles out turn key to close...