In my house (wired in 1998 by an electrician), there is a 2g switch at the bottom of the stairs that controls the light at the top of the stairs (two-way switching), and a light in the hallway (ground floor).
I've just checked and if I isolate the downstairs lighting circuit, the hallway light is dead but the upstairs light can still be controlled... The upstairs light is on the upstairs lighting circuit.
I thought it was against regs to have such an arrangement without a big warning sticker on the front, something along the lines of "this enclosure contains multiple circuits" Or is there some reason that this would be allowed, bad design practice reasons aside?
The reason I ask is that in my rewire it would be useful to continue such an arrangement whilst leaving the upstairs light on the upstairs circuit. The alternatives are to place upstairs light on downstairs circuit (seems sloppy) or have two separate 1g switches in the hall (looks untidy).
Looking in my 17th Edition I would say that 514.11 and 537.2.1.3 forbid this without a suitably placed warning. Without these two regs though, 514.10.1 would accomodate it because nominal voltage doesn't exceed 230V.
I've just checked and if I isolate the downstairs lighting circuit, the hallway light is dead but the upstairs light can still be controlled... The upstairs light is on the upstairs lighting circuit.
I thought it was against regs to have such an arrangement without a big warning sticker on the front, something along the lines of "this enclosure contains multiple circuits" Or is there some reason that this would be allowed, bad design practice reasons aside?
The reason I ask is that in my rewire it would be useful to continue such an arrangement whilst leaving the upstairs light on the upstairs circuit. The alternatives are to place upstairs light on downstairs circuit (seems sloppy) or have two separate 1g switches in the hall (looks untidy).
Looking in my 17th Edition I would say that 514.11 and 537.2.1.3 forbid this without a suitably placed warning. Without these two regs though, 514.10.1 would accomodate it because nominal voltage doesn't exceed 230V.