Hi,

We're just in the process of having a gas fire replaced with one of the
cheapy inset things from B&Q, complete with mantle piece, etc. Whilst its
all apart I would like to put in a cable run from one side of the chimney
breast to the other to give us flexibility to move the tv around.

How hot would it get behind the gas fire if I say drilled a hole in both
sides of the chimney a laid a piece of plastic waste pipe in there to push
cables through. Or would I be better putting the cable run under
floorboards?

Si

Simon Foster wrote


How hot would it get behind the gas fire if I say drilled a hole in
both sides of the chimney a laid a piece of plastic waste pipe in
there to push cables through. Or would I be better putting the cable
run under floorboards?

I don't know what regulations are, but under my gas fire it's perfectly
cool, and I can and do run cables under there.

Safety, physical protection etc may be another matter, IMO it's ok as if I
remove the fascia they're on view.

--

mike

On Wed, 25 Jan 2006 23:00:17 +0000, mike wrote:

Simon Foster wrote


How hot would it get behind the gas fire if I say drilled a hole in
both sides of the chimney a laid a piece of plastic waste pipe in
there to push cables through. Or would I be better putting the cable
run under floorboards?

I don't know what regulations are, but under my gas fire it's perfectly
cool, and I can and do run cables under there.

Safety, physical protection etc may be another matter, IMO it's ok as if I
remove the fascia they're on view.

You've got to be trolling! There is no way that routing an electric cable
through the builders opening behind the inset gas fire box can be
compliant! I don't know what the expected ambient temperature behind the
inset box is but I'm nigh on certain that it is not low enough.
Indeed some inset burner makers forbid the use of soft soldered joints on
the gas pipe under a grate burner.

Depending on the hearth construction there may be a fairly easy route:
You are only required to provide 12mm of non-combustible hearth surface
but are required to raise the hearth to 50mm over the surrounding flooring.
Therefore you can put the hearth slab on a 38mm timber battens. The cable
can be routed in the void between the battens: down the wall into the
space under the hearth and up the wall the other side.

You will need sockets or blank plates either side on the front of the
chminey breast, or protect the cable behind steel plate, or bury it 50mm
in the wall (these are not so easy aspects).


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html

Ed Sirett wrote

You've got to be trolling! There is no way that routing an electric cable
through the builders opening behind the inset gas fire box can be
compliant!

Well, tell that to the manufacturers; in the void are mains cables to the
boiler, a mains lead to the pretty lights on the front, a dial to turn
(boiler thermostat) and a button to press. (startup).

Also my speaker leads, still speaking after all these years.

--

mike

Ed Sirett wrote


You've got to be trolling! There is no way that routing an electric
cable through the builders opening behind the inset gas fire box can
be compliant!

Well, tell that to the manufacturers; in the void are mains cables

You are talking about a back boiler unit.
The OP is talking about "the cheapy inset things from B&Q, complete
with mantle piece,

I *did* wonder; and I thought my post made it clear that I wasn't quoting
scripture

"Safety, physical protection etc may be another matter,"

So I think the "trolling" crack was uncalled for, especially as I have
provenance here, more as an asker, admitted, but definitely not a troller.

And I treat you with the respect you deserve, which is a lot.


--

mike

On Sun, 29 Jan 2006 11:20:07 +0000, mike wrote:

Ed Sirett wrote


You've got to be trolling! There is no way that routing an electric
cable through the builders opening behind the inset gas fire box can
be compliant!

Well, tell that to the manufacturers; in the void are mains cables

You are talking about a back boiler unit.
The OP is talking about "the cheapy inset things from B&Q, complete
with mantle piece,

I *did* wonder; and I thought my post made it clear that I wasn't quoting
scripture

"Safety, physical protection etc may be another matter,"

So I think the "trolling" crack was uncalled for, especially as I have
provenance here, more as an asker, admitted, but definitely not a troller.

And I treat you with the respect you deserve, which is a lot.

Sorry mike. I was referring to the OP who has not re posted as yet.


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html

Ed Sirett wrote


So I think the "trolling" crack was uncalled for, especially as I
have provenance here, more as an asker, admitted, but definitely not
a troller.

And I treat you with the respect you deserve, which is a lot.

Sorry mike. I was referring to the OP who has not re posted as yet.

Oh, sorry, I'm being oversensitive.

I did notice he seemed to have gorn - I wonder if he's one of those guys
who go round staring arguments and b***ing off :~)


--

mike

"mike" wrote in message
. 1.4...
Ed Sirett wrote


So I think the "trolling" crack was uncalled for, especially as I
have provenance here, more as an asker, admitted, but definitely not
a troller.

And I treat you with the respect you deserve, which is a lot.

Sorry mike. I was referring to the OP who has not re posted as yet.

Oh, sorry, I'm being oversensitive.

I did notice he seemed to have gorn - I wonder if he's one of those guys
who go round staring arguments and b***ing off :~)

Heh, but you two seem to be having great fun - although do I now read that
as I'm being called a troll for asking for a little advice??

Anyway, the fire is one of these -
http://www.diy.com/diy/jsp/bq/nav/na...nthem&zone=all - which
is being fitted into an original fireplace which has been bricked up provide
the right size opening for it. We've also got a hearth and mantle from the
same B&Q mix and match range to go with it.

I was thinking that maybe I could drill a hole either side of the chimney
breast at the back and put a 40mm waste pipe through to thread my cables?
The fireplace is a lot deeper than the fire, so could I then lean hearth
stones against the back of the chimney breast over the pipe to protect it
from any heat?

Si

On Mon, 30 Jan 2006 12:59:21 +0000, Simon Foster wrote:

"mike" wrote in message
. 1.4...
Ed Sirett wrote


So I think the "trolling" crack was uncalled for, especially as I
have provenance here, more as an asker, admitted, but definitely not
a troller.

And I treat you with the respect you deserve, which is a lot.

Sorry mike. I was referring to the OP who has not re posted as yet.

Oh, sorry, I'm being oversensitive.

I did notice he seemed to have gorn - I wonder if he's one of those guys
who go round staring arguments and b***ing off :~)

Heh, but you two seem to be having great fun - although do I now read that
as I'm being called a troll for asking for a little advice??

Anyway, the fire is one of these -
http://www.diy.com/diy/jsp/bq/nav/na...nthem&zone=all - which
is being fitted into an original fireplace which has been bricked up provide
the right size opening for it. We've also got a hearth and mantle from the
same B&Q mix and match range to go with it.

I was thinking that maybe I could drill a hole either side of the chimney
breast at the back and put a 40mm waste pipe through to thread my cables?
The fireplace is a lot deeper than the fire, so could I then lean hearth
stones against the back of the chimney breast over the pipe to protect it
from any heat?

Apologies to you Simon.
It's not unknown for people to suggest/ ask for advice over something that
is (in different circumstances) so wrong just to see if they can get a
good few poster worked up...

I guess if the pipe (now called a conduit) is covered with
mortar/stones/bricks then this would be OK.

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html

"Ed Sirett" wrote in message
news
On Mon, 30 Jan 2006 12:59:21 +0000, Simon Foster wrote:

Apologies to you Simon.
It's not unknown for people to suggest/ ask for advice over something that
is (in different circumstances) so wrong just to see if they can get a
good few poster worked up...

No problems - now what about that electric heater in the shower cubicle ;-)

I guess if the pipe (now called a conduit) is covered with
mortar/stones/bricks then this would be OK.

Thanks, just didn't want to do it and find a gooey mess of cables after we'd
used the gas fire. Noticed the hearth is hollow underneath, I presume I
could lay cables under there as per a suggestion in your earlier post?

Si

On Tue, 31 Jan 2006 11:16:45 +0000, Simon Foster wrote:

"Ed Sirett" wrote in message
news
On Mon, 30 Jan 2006 12:59:21 +0000, Simon Foster wrote:

Apologies to you Simon.
It's not unknown for people to suggest/ ask for advice over something that
is (in different circumstances) so wrong just to see if they can get a
good few poster worked up...

No problems - now what about that electric heater in the shower cubicle ;-)

I guess if the pipe (now called a conduit) is covered with
mortar/stones/bricks then this would be OK.

Thanks, just didn't want to do it and find a gooey mess of cables after we'd
used the gas fire. Noticed the hearth is hollow underneath, I presume I
could lay cables under there as per a suggestion in your earlier post?

Why bother!


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html