Moved house and we're still discovering little mysteries ...
The house has two pairs of outside lights (two on the side, two at the back) with a PIR per pair (I think). Currently none of the lights seem to work. There is also a double switch inside the house, near the back door, which I assume is related to the outside lights (it certainly doesn't seem to affect any inside lights).
Looking behind the switch reveals quite a lot of cables - some 2 core and some 3 core - and worryingly at least one 'red' dangling about not connected to anything. So I switched off the power and at least insulated it pending investigation.
So my question is how are PIR controlled lights normally wired?
a) PIR in parallel with the indoor switch, so you can turn the lights on regardless if you want to?
b) PIR in series with the switch, so you can power the lot off if needed (I guess if next door's cat keeps triggering them all night)?
I figure it would be useful to know what the most common arrangement is when trying to figure out what's wrong (might could well just be blown bulbs).
The house has two pairs of outside lights (two on the side, two at the back) with a PIR per pair (I think). Currently none of the lights seem to work. There is also a double switch inside the house, near the back door, which I assume is related to the outside lights (it certainly doesn't seem to affect any inside lights).
Looking behind the switch reveals quite a lot of cables - some 2 core and some 3 core - and worryingly at least one 'red' dangling about not connected to anything. So I switched off the power and at least insulated it pending investigation.
So my question is how are PIR controlled lights normally wired?
a) PIR in parallel with the indoor switch, so you can turn the lights on regardless if you want to?
b) PIR in series with the switch, so you can power the lot off if needed (I guess if next door's cat keeps triggering them all night)?
I figure it would be useful to know what the most common arrangement is when trying to figure out what's wrong (might could well just be blown bulbs).