How olds this then?

[sprocketflup]

Found after moving a panel that'd been sat in place for 40 odd years or so (well, I didn't move it, Canoeboy bullied three other blokes into moving it)

Maybe uninteresting to some

 

[Andy™]

41 years at most

 

[OnOff]

Deffo one for the **** bank!  :lol:

 

[Tony S]

Found after moving a panel that'd been sat in place for 40 odd years or so (well, I didn't move it, Canoeboy bullied three other blokes into moving it)

Maybe uninteresting to some

View attachment 7215

450/700V I’ve never seen.

600/1000V was standard when I started in the 70’s.

The first time I saw the modern 300/500V carp I took it back to the wholesalers saying it was a cheap import, I wasn’t the only one there with rolls of cable complaining.

Standards just ain’t what they used to be.

As a foot note, I tested 1.5mm² T+E 600/1000V to 17.5kV before it failed.

 

[Sidewinder]

The oldest version of BS6004 I have is 1984, the 450/750V rating is in there, and is carried forward.

There is some info here on what the harmonised cable code means, the 07 is the code for 750V.

BATT Cables explanation of the harmonised cable codes.

I think that with this being 6491x i.e. single stranded, then it may well be 450/750, in fact I think that a lot of the drums of 6491 I have are at this rating as are the tri that I buy, not deliberately, but, it's what the wholesaler stocks.

I don't have anything before the 1984 version & can't get view online only for the 1975 version.

 

[kerching]

I am most likely wrong here, see present wife for further details along with a scathing criticism of anything i do/have done/will do, BUT........I Seem to recall 6491 was solid and 6491x was stranded for 2.5 and below. I remember pulling 2.5 solid drawn into conduit and it never ended well

just probably wrong

 

[Sidewinder]

I remember having 2.5 solid too!

Absolute mare.

 

[Blue Duck]

lots of council properties down ere have solid singles in steel conduit, didn't look much fun...