Does this count as an outdoor light needing its own circuit, or can it be on the same circuit as the indoor lights?
It's a loo that's built onto the house but is only accessible by walking outdoors. It has no heating.
Outdoor light or not?
Jun 27, 2021
Last reply: 5 years ago
3 Replies
There is no absolute requirement that an outdoor light would need it's own circuit anyway[1], so yes it can be on the same circuit as the indoor lights (and it would also be logical that it shares a circuit with other lights on the same floor)
[1] Outside circuits might be more prone to failure due to moisture ingress or physical damage - so there can be a good argument to put them on separate circuits to minimise the effects on other parts of the installation should they cause a trip - but its not a requirement, just a design practice.
Double pole switches for outside lights are also useful as you can switch the live and neutral.
I am not talking about clunky 20A ones but ones that look like a lightswitch (or modular light switches). Everyone knows I like Scolmore/CLICK for such things.
Of course "having it's own circuit" really should say "having it's own RCBO" as there is nothing to be gained by sharing a RCD with other circuits.
Indeed, or in my case, all my outside stuff has its own complete CU.
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