Stand Alone Pir Sensor

[voyager9]

I have an external PIR light which will be enclosed with a porch. I intend to install an additional external stand- alone PIR sensor to activate the light. The recommended wiring is to extend the Live (red), L1 (brown) and neutral (blue) to the new PIR. I cannot locate any 3 core external cable with these colours. How would an electrician wire up this additional PIR?

 

[NozSpark]

You're right, they don't make cables in those colours so...

we'd use a cable with 4 cores (you'll need an earth even if it's not connected at the PIR) and sleeve the ends accordingly

 

[Andy™]

however, they will need marked with brown for lives and blue for neutral, they must not be marked with red

 

[voyager9]

Thanks for your replies:

Do the major DIY stores sell 4 core cable by the meter ( I only need about 3M) and is there a particular name for this this type of cable that is both flexible and is suitable for external use?

Can you explain why the wires should not be marked in Red?

 

[Andy™]

because new wiring colours are brown for live & blue for neutral... red is old live colour, and you cant mix them in the same cable...

 

[Doc Hudson]

Can you explain why the wires should not be marked in Red?

The cable identification colours used in UK wiring changed in 2004. Red is no longer used in 230v ac supplies.

https://www.tlc-direct.co.uk/Technical/DataSheets/Cable/CableColoursLeaflet.pdf

Doc H.