mixed cables in conduit

JohnW2 said:
Agreed - but, as I said, the specifications / data sheets seem uniformly consistent in not 'specifying' any figure for 'voltage rating'. In the absence of that, I think all one can do is draw one's own conclusions from the test which at least one 'specification' says that the cable has to pass.

Kind Regards, John
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I do understand the reasoning and conclusion, I have it in my mind, from my time in BT, that cat II cable is rated at 80V and on training courses it would crop up that ringing current generally accepted as being 80V +/- something possibly exceeds that.

I've tried a quick search for CAT II & CAT III spec but that only seems to come up with CAT 5&6 results inclding this site:
https://www.fscables.com/products/c...zvSnWILTQwxYlrstjprsqsW59k4AZf5EaAhanEALw_wcB
The download therein indicates CAT6A is rated at 125V with a test voltage of 1KV.
 
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Harry Bloomfield said:
The OP posted the very same question, in another thread and it was answered there.
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Perhaps I've somehow missed it, but I'm not aware of any other recent thread started by the OP (john4703). I'm also not sure what question you are referring to, nor what any of this has got top do with your reply to what I had posted ... so, as i said, I'm rather 'lost' !!

Kind Regards, John
 
In the first thread the OP mentioned his wife falling down, needing an extra phone socket and having mains cables in a conduit, to which he wanted to add a phone cable. There were not many replies, but all said it was not allowed, including me. One suggestion was to hot melt glue the phone cable alongside the conduit to help hide it.

Having said that - I am unable to find the thread now, but it was simply not possible that it could be another poster with a wife who tended to fall down, needing to add a phone socket and cable in a mains conduit.
 
Harry Bloomfield said:
In the first thread the OP mentioned his wife falling down, needing an extra phone socket and having mains cables in a conduit, to which he wanted to add a phone cable. There were not many replies, but all said it was not allowed, including me. One suggestion was to hot melt glue the phone cable alongside the conduit to help hide it.

Having said that - I am unable to find the thread now, but it was simply not possible that it could be another poster with a wife who tended to fall down, needing to add a phone socket and cable in a mains conduit.
Click to expand...
It was a repeat thread that was posted after this one had received its first replies:
https://www.diynot.com/diy/threads/mixed-cables.583336/#post-5122634
 
Harry Bloomfield said:
In the first thread the OP mentioned his wife falling down, needing an extra phone socket and having mains cables in a conduit, to which he wanted to add a phone cable. ....
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That is THIS thread - the OP mentioned his wife falling down etc. in post #5 on page 1.

Harry Bloomfield said:
Having said that - I am unable to find the thread now, but it was simply not possible that it could be another poster with a wife who tended to fall down, needing to add a phone socket and cable in a mains conduit.
Click to expand...
As above, that would probably be because you were looking for 'another thread' which doesn't exist, rather than looking more carefully at the first page of this thread :)

Kind Regards, John
 
JohnW2 said:
That is THIS thread - the OP mentioned his wife falling down etc. in post #5 on page 1.

As above, that would probably be because you were looking for 'another thread' which doesn't exist, rather than looking more carefully at the first page of this thread :)

Kind Regards, John
Click to expand...

I was correct - thanks RandomGrinch..
 
Harry Bloomfield said:
I was correct - thanks RandomGrinch..
Click to expand...
Yes, thanks to him/her.

The reason I had never seen that previous thread, and why my searching didn't find it, is that I only ever look at the 'Electrics UK forum, and only searched that forum for previous messages from john, whereas that other message was in the 'Alarms, CCTV and Telephones' forum. As for what you wrote in that other forum, namely ...
Harry Bloomfield said:
No, it is not a safe option. Imagine if there is a fault where the mains voltage gets to the phone cable and some poor telephone engineer is working up a pole on the line and suddenly gets a belt from you mixing mains and telephone wires.
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... as I've said, it would require four simultaneous faults for that to happen, twice as many as it would require for him to get a shock when touching any bit of T+E in a house in which he was working.

As I've said, since the outside of ('mains carrying') T+E is considered safe for a human being to touch, it ought also to be considered safe (for the telephone engineer) even if there were bare telephone conductors in contact with the outer sheath of the T+E - so once one adds on the insulation and sheath of the telephone cable, I think we really are down to the level of 'infinitesimal' levels of risk!

Kind Regards, John
 
JohnW2 said:
As I've said, since the outside of ('mains carrying') T+E is considered safe for a human being to touch, it ought also to be considered safe (for the telephone engineer) even if there were bare telephone conductors in contact with the outer sheath of the T+E - so once one adds on the insulation and sheath of the telephone cable, I think we really are down to the level of 'infinitesimal' levels of risk!
Click to expand...

So in John's opinion it is absolutely fine to ignore Regulations when it suits John? John - the idea is that you segregate such cables, simply for the safety of anyone who might be working on the ELV or data cables. Someone working on ELV cables should never need to be worried that some fool might have risked running them in close contact with mains cabling and put them at risk. That's why the Regulations insist on proper segregation between mains and ELV.

Most accidents are the result of a series of infinitesimal small risks, all coming together to bite you. Most of the people who do the lottery, don't really expect a big win, but obviously some do get to win.
 
JohnW2 said:
...
As I've said, since the outside of ('mains carrying') T+E is considered safe for a human being to touch, it ought also to be considered safe (for the telephone engineer) even if there were bare telephone conductors in contact with the outer sheath of the T+E - so once one adds on the insulation and sheath of the telephone cable, I think we really are down to the level of 'infinitesimal' levels of risk!

Kind Regards, John
Click to expand...
Yes but the voltage rating of the cable would still not comply with the regs.
Would any harm come to an installation like this?... I very much doubt it.
Would I install like this?... NO. Not without a specified voltage rating.
Would I set up a sound system with a telephone line involved and have the cables all laying on the floor mixed together?... you bet.
 
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