My main question is, where is (or should) the CU earthed? The supply comes over head line (L & N wires I believe) to the CU and the only earth wire goes to the water main (which I assume is for the earth bonding of the copper pipes?) but there doesn't appear to be an earth rod going into the ground. Any views on this?
My other source of puzzelment comes from a friends (rented) house where the upstairs mains power circuit controls the downstairs lounge and dining room sockets as well - and also appears to control the bathroom light (the power circuit that is) with no visible source of a fused connection. The outside security light has no isolation switch (ie its premanently live) however this, I believe, is on the correct lighting circuit.
Lastly - should a power shower have its own RCD, or, is a 45amp wired fuse acceptable? The house has the old style fuse box (fuse wire + push fit fuses) and I thought an RCD would be the safer option.
This is more for the sake of my own curiosity rather than an upcoming DIY project
My other source of puzzelment comes from a friends (rented) house where the upstairs mains power circuit controls the downstairs lounge and dining room sockets as well - and also appears to control the bathroom light (the power circuit that is) with no visible source of a fused connection. The outside security light has no isolation switch (ie its premanently live) however this, I believe, is on the correct lighting circuit.
Lastly - should a power shower have its own RCD, or, is a 45amp wired fuse acceptable? The house has the old style fuse box (fuse wire + push fit fuses) and I thought an RCD would be the safer option.
This is more for the sake of my own curiosity rather than an upcoming DIY project