What kind of cable is this?

johnnyboy08

Hi all, I'm in the process of replacing the 20 year old garden lights and the buried cable running to them is a black 4 core with core cable wires coloured blue, red, yellow and brown. The red, blue and yellow are clear (live, neutral and earth) but the brown is confusing me.

To give some context the lights are on a switch and on a sensor. I would have expected both switch and sensor cores to feed the light live but that doesn't seem to be the case even though they worked.

In the attached picture the brown and blue on left are for light bulb, green went to earth on light post. Core cables on the right come from mentioned underground cable and there are 2 of each core to join to next light.

I'm replacing existing cable with new 4 core SWA do just want to make sure the new colours match up with the guidelines while doing with old.

kirk.

I would have said it was the old 3-phase colours but that should be red, yellow, blue and black afair

Check that the 4-core you're getting has the single-phase colors , it might be 3- phase swa

Phil.x

They are old 3ph colours, brown, red, yellow, the brown in your cable would be a permanent feed for the pir sensor.

kirk.

https://www.boards.ie/discussion/comment/121431011#Comment_121431011

Old 3P was red yellow blue and black neutral

Phil.x

https://www.boards.ie/discussion/comment/121437247#Comment_121437247

Yes, the really old colours. But brown, red, yellow were prior to the current brown black grey.

kirk.

https://www.boards.ie/discussion/comment/121438934#Comment_121438934

Really ?

blackbox

https://www.boards.ie/discussion/comment/121438934#Comment_121438934

I thought the current colours were brown, blue and green& yellow. I think the previous colours were red, black and green.

kirk.

https://www.boards.ie/discussion/comment/121439140#Comment_121439140

Yes single phase

We were talking bout 3P

Bruthal.

https://www.boards.ie/discussion/comment/121439345#Comment_121439345

Yes was red yellow blue and black N. Then brown red yellow and blue N. Then this brown black grey setup.

kirk.

https://www.boards.ie/discussion/comment/121439675#Comment_121439675

I must have forgot brown red yellow blue