Meter box issue ?

[Gavin Bear]

Hi folks. Comment invited on this meter box.
White mini trunking contains door entry system wiring.

 

[Dave OCD]

Is that Skittles bag non-combustible ?

 

[Pete999]

AFAIK it shouldn't be in there.

 

[Martin Kerr]

The Skittles bag?

 

[davesparks]

Poor workmanship but technically acceptable

 

[Pete999]

The Skittles bag?

That as well

 

[sparksburnout]

Same as Dave said, the holes look like they have been made with a pick-axe but what's the big problem with the cables passing through? I bet the DNO wouldn't give a ---- anyway.
Never liked skittles much though.

 

[7029 dave]

The sunny boys put their equipment in so who cares, nobody.?

 

[PEG]

Don't know what we are judging? The holes could have been there already...chicken and egg job...Only thing we could bank on,is the existence of a tubby kid with bad teeth lurking somewhere...

 

[Deleted member 9648]

Those door entry cables should not pass through the same hole as the tails without any segregation, voltage rating of the insulation will not be the same as the tails. Easy fix though.

 

[telectrix]

Those door entry cables should not pass through the same hole as the tails without any segregation, voltage rating of the insulation will not be the same as the tails. Easy fix though.

how do you know that? those cables could be FP200. :ciappa:

 

[davesparks]

Those door entry cables should not pass through the same hole as the tails without any segregation, voltage rating of the insulation will not be the same as the tails. Easy fix though.

But the tails are insulated and sheathed therefore the requirements of that particular regulation have arguably been satisfied

 

[Gavin Bear]

how do you know that? those cables could be FP200. :ciappa:

The cables are alarm/telephone type, and go up the cavity with the meter tails.

I thought there should be segregation, and all holes made good to preserve fire blocking integrity.

 

[davesparks]

The cables are alarm/telephone type, and go up the cavity with the meter tails.

I thought there should be segregation, and all holes made good to preserve fire blocking integrity.

Fire blocking integrity??? What's that then and what's it got to do with a meter box?

 

[Deleted member 9648]

The cables are alarm/telephone type, and go up the cavity with the meter tails.

I thought there should be segregation, and all holes made good to preserve fire blocking integrity.

As I thought.....there should be segregation
don't have the BYB to hand but 528.1 in the BRB

 

[PEG]

Those door entry cables should not pass through the same hole as the tails without any segregation, voltage rating of the insulation will not be the same as the tails. Easy fix though.

...Nah...it'll be fine...you must be getting paranoid...:biggrinjester:

 

[davesparks]

As I thought.....there should be segregation
don't have the BYB to hand but 528.1 in the BRB

No further segregation than insulation and sheathing is required, the ELV cables are not within the same wiring system (insulated and sheathed cable) so require no further protection from a voltage point of view.
As far as interference goes then as long as the ELV circuits are not susceptible then again there is no issue

 

[Deleted member 9648]

No further segregation than insulation and sheathing is required, the ELV cables are not within the same wiring system (insulated and sheathed cable) so require no further protection from a voltage point of view.
As far as interference goes then as long as the ELV circuits are not susceptible then again there is no issue

I don't agree. Passing through the same hole they are band 11 cables in direct contact with band 1 cables. None of the requirements of 528.1 are met.

 

[telectrix]

i agree with dave. separation is provided by the outer sheath of the tails.

 

[Deleted member 9648]

i agree with dave. separation is provided by the outer sheath of the tails.

Reading 528.1.....(from the BRB which is all I have to hand) ....Band 1 and band 11 shall not be contained within the same wiring system unless(i) every cable or conductor is insulated to the highest voltage present...not the case with telephone/alarm cables(ii)....not applicable here(iii)....Band 1 and Band11 cables are installed in separate compartments of a ducting or trunking system....Not here they are not(iv) not applicable here(v) a separate conduit or trunking system is used..(v) not applicable here

There is no provision for separation of band 1 and band 11 cables by means of ONE set of cables being insulated/sheathed for the highest voltage present.I think you are wrong, but will happily put my hands up if you can show me a regulation supporting the view that only the tails need to be insulated to the highest voltage present or that a non metallic cable sheath meets the requirements of 528.1.

 

[telectrix]

what i'm saying is that they are not contained within the same wiring system/containment. they just pass closely through a hole for perhaps a few inches.

 

[Dave OCD]

And they're also segregated by enclosure in trunking....

 

[Deleted member 9648]

what i'm saying is that they are not contained within the same wiring system/containment. they just pass closely through a hole for perhaps a few inches.

as far as I'm aware there is nothing in the regs stating a few inches is ok but a greater distance isn't

And they're also segregated by enclosure in trunking....[/QUOTE

whats the point of segregating them in trunking when they go through the same hole?

We will have to agree to disagree on this one......I think you are wrong on your interpretation of this one,but it's hardly likely to cause an issue in practice.

 

[Deleted member 9648]

Don't know whats going on with above post...it didn't look like that when I posted it!

 

[telectrix]

blame it on beer, or lack of it.

 

[Deleted member 26818]

Surprised the door access guys used trunking.

 

[telectrix]

must have had a part length knocking around on the van.

 

[GETWIRED]

The fat kid with bad teeth ha probably fell down that hole...

 

[PEG]

The fat kid with bad teeth ha probably fell down that hole...

...he would have needed buttering,first :smile5: