Good Old Delroy, he gets all the best Jobs :)

[mainline]

Again, that's a different scenario. Obviously you may have to get a cable through the wall, as you would a gas pipe etc . It is not the same as chucking several feet of loose T&E in a cavity to save chasing it!

A bit of a joke really isn't it.

It seems that it's Ok for instance a 110mm fan pipe to bridge the gap as well as the dozens of ties, water, gas, etc etc but not a bit of cable.

 

[Mike Johnson]

A controlled penetration like a fan pipe compared to metres of cable flapping around loose in a cavity is not a comparison, but you carry on wriggling and finding excuses, eventually you will find someone that will agree with you and then you may, just may believe it your self.

 

[DPG]

A bit of a joke really isn't it.

It seems that it's Ok for instance a 110mm fan pipe to bridge the gap as well as the dozens of ties, water, gas, etc etc but not a bit of cable.

You already admitted earlier (post 528) that cables shouldn't bridge cavities. I'm not sure why you keep returning to the same point.

 

[westward10]

And Delroy carries on blissfully unaware of the carry on he is causing on here

 

[7029 dave]

Again, that's a different scenario. Obviously you may have to get a cable through the wall, as you would a gas pipe etc . It is not the same as chucking several feet of loose T&E in a cavity to save chasing it!

Dont want to start any arguments , but the way I read #523 IMO its not different the cable is present.

 

[Dustydazzler]

I think we are all getting a bit carried away , running a cable through a straight hole from inside to out is fine.
I tend to agree that weaving metres of cable up and down a cavity wall isn't the best install method but again it has been done like that for donkeys years on old rewires. Infact an empty cavity wall made a perfect wire way and meant a 2 man team could rewire an old council house in about 3 days.
IF you had to chop out chases it would have added another 2 days and a ---- tonne of mess

 

[7029 dave]

I think we are all getting a bit carried away , running a cable through a straight hole from inside to out is fine.
I tend to agree that weaving metres of cable up and down a cavity wall isn't the best install method but again it has been done like that for donkeys years on old rewires. Infact an empty cavity wall made a perfect wire way and meant a 2 man team could rewire an old council house in about 3 days.
IF you had to chop out chases it would have added another 2 days and a ---- tonne of mess

When we were pulling an old rubber twin switch cable through the cavity, made on new to to old the tenant was watching and was quite blown away that their wall with pictures and nice flowery wall paper (lol) was still intact and watching this new pvc cable slip up the wall, followed by a nice white switch and patress.

 

[mainline]

A controlled penetration like a fan pipe compared to metres of cable flapping around loose in a cavity is not a comparison, but you carry on wriggling and finding excuses, eventually you will find someone that will agree with you and then you may, just may believe it your self.

You are totally going off track to try to hide the fact that you are wrong.

I didn't say it was OK to throw metres of cable or bridge gaps, in fact, I said it was unacceptable, so i don't know why you are coming up with scenarios that obviously wouldn't comply.

How about this : I run a conduit along the inner leaf with no bridge to the outer (although you said it's fine as it's a controlled penetration) feeding a socket, tell me how that wouldn't comply ?.




What I did say was that if the criteria can be met, there is nothing wrong with doing so.

You said it can't be done under any circumstances, but then failed to reply to my question of tails in a cavity.

My point is that you CAN run cable in a cavity as long as you meet the criteria, that is a fact.
If you took the time to read what I said, it may start to sink in that you are wrong.

 

[Pretty Mouth]

I think we are all getting a bit carried away , running a cable through a straight hole from inside to out is fine.
I tend to agree that weaving metres of cable up and down a cavity wall isn't the best install method but again it has been done like that for donkeys years on old rewires. Infact an empty cavity wall made a perfect wire way and meant a 2 man team could rewire an old council house in about 3 days.
IF you had to chop out chases it would have added another 2 days and a ---- tonne of mess

Dusty, you have hands-on experience of running cables in cavities. Did you ever come across any problems as a result of wiring this way?

Edit: same question to @7029 dave

 

[Mike Johnson]

The likelihood of a customer attributing their damp problems to the electrical works carried out possibly a year or so earlier is stretching it a bit don't you think?

 

[Pretty Mouth]

The likelihood of a customer attributing their damp problems to the electrical works carried out possibly a year or so earlier is stretching it a bit don't you think?

I don't want to argue with you Mike. Just interested to hear if they've found problems as a result

 

[Mike Johnson]

I doubt if any electrician would hear of any problems that running cables inside a cavity would cause, in the first instance the cause would have to be found, that would require a camera inside the cavity to find the bridge between the two wall skins, it is not unusual to do this and to find mortar snots (yes that is what lumps of mortar in a cavity are called) on the wall ties, this is generally because cavity battens where not used correctly during construction to clean the cavity. Equally any other bridge found would cause a damp problem to the inside skin.

 

[7029 dave]

Dusty, you have hands-on experience of running cables in cavities. Did you ever come across any problems as a result of wiring this way?

Edit: same question to @7029 dave

No problems what so ever, as DD these were council houses we were an approved company with the nic no DI back then.
I was an apprentice so dont know the full details, but the council must of inspected the work and it may have even been in the spec (who knows).
As mentioned previously it was much quicker and no real disruption or mess, just to add the old rubber cables we provided in the cavity from build it was like for like replacement.

I am not going to go into the rights or wrongs into this practice. As explained the council tenants were more than happy as the houses was not ripped apart no redecoration etc.
So I would expect the council inspectors were satisfied to.

 

[Dustydazzler]

Dusty, you have hands-on experience of running cables in cavities. Did you ever come across any problems as a result of wiring this way?

Edit: same question to @7029 dave

Not from a wiring Pov , sometimes you got snagged on a wall tie or some rough mortar but 99% of the time it was easy to pull cables in the cavity (an empty cavity) in older houses

If the cavity had a little bit fibre glass , polystyrene or those dreaded little poly balls in it then it was harder and sometimes you would give up fishing a cable and chase the wall instead

No idea about modern houses thou , as I uses a twin disc wall chases now to nip out a chase

 

[Mike Johnson]

Can't turn on the TV now days without seeing a report on social housing damp problems.

 

[Dustydazzler]

Can't turn on the TV now days without seeing a report on social housing damp problems.

Usually its heavy black mould growing all around the badly fitted window frames

 

[Pretty Mouth]

No problems what so ever, as DD these were council houses we were an approved company with the nic no DI back then.
I was an apprentice so dont know the full details, but the council must of inspected the work and it may have even been in the spec (who knows).
As mentioned previously it was much quicker and no real disruption or mess, just to add the old rubber cables we provided in the cavity from build it was like for like replacement.

I am not going to go into the rights or wrongs into this practice. As explained the council tenants were more than happy as the houses was not ripped apart no redecoration etc.
So I would expect the council inspectors were satisfied to.

Not from a wiring Pov , sometimes you got snagged on a wall tie or some rough mortar but 99% of the time it was easy to pull cables in the cavity (an empty cavity) in older houses

If the cavity had a little bit fibre glass , polystyrene or those dreaded little poly balls in it then it was harder and sometimes you would give up fishing a cable and chase the wall instead

No idea about modern houses thou , as I uses a twin disc wall chases now to nip out a chase

Thanks for the replies guys. So usually you were just using the old cables to pull the new through?

I have only done it a couple of times, where extra points were needed on tiled walls in kitchens, but the owners didn't want the tiles wrecked. I found it difficult to do, even with an empty cavity, though this may have been down to inexperience. If I was going to do it again, I'd core out a large hole, but small enough to be covered by the backbox.

I did attempt to rod a cat6 cable down a cavity 2 storeys, with full-fill rockwool. I gave up after an hour!

 

[Mike Johnson]

Usually its heavy black mould growing all around the badly fitted window frames

Usually its due to lack of ventilation, but mould on the ceilings and floors adjacent to wall are a different matter.

 

[mainline]

It would be a shame to let the thread go cold when there's more beauty's like this! See if you can spot why he can't test the RCD (before reading the comments!)

I didn't see him fix any faults. Saw him find a fault (high zs) and seemingly be massively confused by it. Also saw him turning circuits back on while leaving unterminated wires hanging out of a socket (again)

He is right about You have a major fault, though.
It started as soon as the customer let him

 

[mainline]

I remember someone saying about Dels videos are not polished etc compared to others.

I would be interested in any thoughts on this one.