Odd wiring for outside light.

Joined
23 Feb 2010
Messages
15
Reaction score
0
Location
Bedfordshire
Country
United Kingdom
I bought a replacement light for the outside light that has been here since I moved in (has been working intermittently for a while, think it's the sensor and stopped working completely a few months ago). The switch for this light it connected to a 3 gang light switch inside near the front door, the others 2 switches power the porch light and the hallway light inside the house.

Upon remove the old outside light I was greeted with this ...
IMG_20220604_180805.jpg

IMG_20220604_180903.jpg


There's 2 sets of wires here....

2 red which I guess are live, which are connected together via a chocolate block.
2 black which should be neutral, with one going to the live terminal on the small white chocolate block inside the light. And the other black wire going to the neutral terminal on the white chocolate block.
There is only 1 earth wire I can see, not sure where the other is but this it not connected to anything.

I have taken the 3 gang switch off the wall Inside the house and the 3 sets of wires Inside are black and red atrached to the switch with the 3 earth's going to the light shell housing.

The way the light is wired must have been correct as the light did work before BUT doesn't this wiring seem odd with the 2 red wires connected to each other?.
 
Sponsored Links
Joined
10 Mar 2007
Messages
10,559
Reaction score
2,219
Location
Poole, Dorset
Country
United Kingdom
Reds are permanent live, one from the supply and the other to the switch.
The blacks are the switched live from the switch and neutral.

One cable is L&N from the supply, the other L and SL to the switch.
 
Sponsored Links
Joined
23 Feb 2010
Messages
15
Reaction score
0
Location
Bedfordshire
Country
United Kingdom
So it's correct then, got me a bit confused ??

Does it matter that there is just the 1 earth wire connected?

How would you be able to identify which black wire was which if I wasn't able to copy it from the previous light ?
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Top