New find on an EICR
Red & green twin (strange)
- Thread starter seasickstevie
- Start date
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Never come across this type of cable before. A red & green twin that strips like bellwire.
The red is double insulated, but when it's been separated the cpc still has some (a lot) of red on it.
Very strange.
(none of my work by the way
)
The red is double insulated, but when it's been separated the cpc still has some (a lot) of red on it.
Very strange.
(none of my work by the way
)Very strange, indeed!
The green (plus 'a lot of red') looks to be fairly loose on the conductor, as if it were sleeving rather than insulation ...
Kind Regards, John
It does look a bit like that John, but I think it's just a bit brittle perhaps. I'll take a closer look when I go back.
You can see where they're not actually parted (as a pair) that the colour continues.
You can see where they're not actually parted (as a pair) that the colour continues.
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it is just that the yellow of the green/yellow sleeving has ripened.........
ok fetching coat.
ok fetching coat.
Agreed, but the thing which struck me most (as visible in both the photo-snippets I posted) is that the conductor seems appreciably smaller than the inside of the 'insulation'- which one would expect with sleeving but not with 'moulded on' insulation. Whatever, it's certainly very odd, and, for what it's worth, not something I've ever seen!
Kind Regards, John
That was my very first thought - when I looked at the pic but before reading the text which followed. However, when I did read it ...
Kind Regards, John
I think it was a banana joke John
I realised that - but, as I said, and despite it being a joke, my first reaction on seeing the photo (without having anything to read) actually was to think that the yellow of G/Y had discoloured over time, becoming red.
'Ripen' is clearly not the word for what I was thinking about since, when bananas (and other things) ripen, then change TO yellow (from green), not FROM yellow
Kind Regards, John
Seen this today 1960s house been rewired this is the old cable for the switch drops ....
Can't think of any actual advantage of using this stuff instead of the more usual 1 core+earth sheathed cable.
3 strands in the core doesn't seem as normal as 7.
Presumably, if this stuff was intended for 240v use, it didn't catch on.
3 strands in the core doesn't seem as normal as 7.
Presumably, if this stuff was intended for 240v use, it didn't catch on.
I'm not quite sure what we are being shown. Did the 'switch drops' consist of two separate insulated-and-sheathed singles (the other one presumably being black) plus a separate green CPC - or was there a further sheath around all of them?
The norm for lighting circuits was 3/0.029" (around 1.5mm²), wasn't it - i.e. 3 strands, not 7?
Kind Regards, John
Come to think of it, I think the old imperial lighting wires did have three strands.
Presumably the old switch drops would consist of two or three of these red and green cables. I don't think blacks or neutrals were brought to the switch, particularly around the 1960s as suggested.
I should think the switches were wired to two plate conduit method.
With this method, there would be single sheathed and insulated neutrals running to the lights. most likely without an earth wire.
As I understand it, the red is sheathed and insulated, the green in only insulated, and two are 'stuck together' sort of thing.
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I would expect the other cable to be twin for the strippers on 2 way lighting.
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