Aico alarm wiring instructions

[AndyPRK]

I wouldn’t expect grey. That cable (well mine anyway) was around long before 2004

Annoyingly mine has twin blacks

I suspect yours is from the 80’s.
And mine from the 90s.

They used white black for zone valves in the 80s. ACL. Whwre now they use orange grey

 

[JohnW2]

I wouldn’t expect grey. That cable (well mine anyway) was around long before 2004

You may be right about its age. Mind you, the colours for at least some flexible cables (certainly 2-core and 3-core ones used for 'appliances') changed decades before 2004.
Today, grey would make a lot of sense - (Brown, Black, Grey) + Blue + G/Y

I suspect yours is from the 80’s. And mine from the 90s.

You may be right.

 

[AndyPRK]

It would make sense if you wanted 2 neutrals in the cable.

 

[JohnW2]

It would make sense if you wanted 2 neutrals in the cable.

A fairly rare requirement. Which would you use as the second neutral - the black or the white?

 

[JohnW2]

My aged memory is clearly failing me. A further look on my shelves discovered a reel of the below (labelled "0.75mm² heat resistant" in my handwriting). I presume I had it for heating controls and things like timer fans etc. It is obviously just what Mr Aico is asking for (in UK) but, ironically, it's ancient - so although it was clearly fairly available back then, that no longer seems to be the case!

 

[CountryFan]

My aged memory is clearly failing me. A further look on my shelves discovered a reel of the below (labelled "0.75mm² heat resistant" in my handwriting). I presume I had it for heating controls and things like timer fans etc. It is obviously just what Mr Aico is asking for (in UK) but, ironically, it's ancient - so although it was clearly fairly available back then, that no longer seems to be the case!
View attachment 401355

You can still get 0.75mm2 heat resistant flex, I collected a 50m drum from toolstation earlier this week. I use it all the time for heating controls.

 

[JohnW2]

You can still get 0.75mm2 heat resistant flex,

Yes, one obviously can - but can you now find any with those colours?