RE: Newbie about to run Cat5

["James, Daniel" <daniel.james@xxxxxxx>]

>25mmx16mm with a snap on lid (but buried in the wall) since it's got
more
>useable cross-section. Has anyone installed this type, any comments on
the
>benefits (or otherwise) ?

I used this in node zero to contain runs of Cat5 and CT100.

The straight runs are fine, but as with any conduit its the cornering that
can be fun :-)

It installs fine, I tend to drill holes in the trunking and screw it to the
wall. - the biggest problem you may have is making sure it doesn't move, as
your plasterer will curse you, and you have the danger of undoing all his
good work, through cracking.

>I was planning on a 5-6mm plaster coat on top of the conduit - will
this be
>thick enough to prevent cracking etc ?

Finishing plaster will be fine, to ensure it doesn't crack see above, and
also ask your plasterer to run some tape over the conduit, (not sure what
this stuff is, but my plasterer used it over conduit and the joint between
the bay window ceiling and the house, and its been fine.

>Also, in some locations, I may want to run Cat5 & speaker cable in
same
>conduit. I know mains & LV (Cat5) in the same conduit is a no-no,
but what
>about Cat5 & speaker cable ?

I've done this, and haven't had a problem with either signals.

>I can chase the wall, fit the conduit and plaster over, but what about
the
>backbox ? Ideally I'd like to fit this too, and completely hide it
under
the
>plaster

Are you planning to just fit the conduit or run the cables in there too?

There should be no issue either way, and I am not aware of regs on Cat 5
cable... but do follow the standard practice of running the cables straight
down the wall over the backbox.

Also you can buy covers for backboxes that can be used whilst plastering,
it
may be worth your while either making some or finding them, TLC used to
sell
them. - so when you plaster you do not fill the backbox with plaster, as
scooping this out in the future would be a nightmare.

If you are not installing the cable, at least put a length of string in the
conduit, to ease pulling cables through at a later date.


HTH

Daniel



-----Original Message-----
From: Hawes,Timothy Edward (GEG) [mailto:haweste@xxxxxxx]
Sent: 14 March 2002 09:21
To: 'ukha_d@xxxxxxx'
Subject: [ukha_d] Newbie about to run Cat5


[Also posted to UK_Selfbuild - apologies if any of you also subscribe to
that list]

I'm picking up a wall chaser tomorrow for my first foray into this Cat5
business. I'm going to be chasing walls and installing conduit now, but not
actually pulling cables for a month or so (various reasons why, but that's
the way it has to be).

I'm going to run Cat5, CT100 and speaker cable to many of the rooms in the
house, and build in provision for running cables to the remaining rooms. A
while ago James Hoye (I think) commented on the merits of different sized
conduit. I was originally planning on installing 25mm round, on the basis
that 20mm round was a bit tight for 4 cables, but am now considering
25mmx16mm with a snap on lid (but buried in the wall) since it's got more
useable cross-section. Has anyone installed this type, any comments on the
benefits (or otherwise) ?

I was planning on a 5-6mm plaster coat on top of the conduit - will this be
thick enough to prevent cracking etc ?

Also, in some locations, I may want to run Cat5 & speaker cable in same
conduit. I know mains & LV (Cat5) in the same conduit is a no-no, but
what
about Cat5 & speaker cable ?

One final question. While I'm hiring the tool and making the mess, I'd like
to put in provision for future (Cat5 based) keypads at light-switch height.
I can chase the wall, fit the conduit and plaster over, but what about the
backbox ? Ideally I'd like to fit this too, and completely hide it under
the
plaster (I'll know where it'll be when I come to use it). Is there a
problem
>from
that's completely hidden ?


Here's hoping you can help (and I'm doing the right thing :-) ),

Thanks,

Tim.

P.S. Any top tips for explaining to SWMBO why I need to run cable to _so_
many locations would be appreciated !

+


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