Re: standard wiring infrastructure

["Tracey Gardner" <tracey.gardner@xxxxxxxxxxxx>]

I fully agree with Tim on his lighting points
I've run my feeds to the switch plate back to the relay/dimmer location,
rather than to the rose as it gives you the mximum flexibility.
And the same with the 5 amp round pin sockets for controlling table/floor
lamps etc

I'd also recommend the use of latching relays, mine were from Finder, for
switching lights from multiple locations, in my case up to six in my
entrance hall.

Regards

Tracey

----- Original Message -----
From: Tim Hawes
To: ukha_d@xxxxxxx
Sent: Tuesday, October 22, 2013 8:38 AM
Subject: Re: [ukha_d] standard wiring infrastructure


The great thing about standards is that there's so many of them ;-)
Each manufacturer will claim theirs is the standard that all others should
follow...

Just a quick couple of thoughts, I haven't fully digested your mail :-)

For lighting circuits I'd run from switch plate back to the relay/dimmer
location, rather than to the rose.
And you might like to think about 5A round pin sockets for controlling
table/floor lamps etc. again with switch cables from the switch plate back
to the central point.


lso, if running Cat5 to locations where mains volts will be present (e.g.
wall switch points, central relay/dimmer lcoations, etc) ensure that the
cable is suitably rated for the enclosure i.e. the cable sheath/insulation
is rated for mains voltages not just LV/data voltages. CBus pink cable is
suitable, there may be others but I haven't looked.


HTH,
Tim.



On 21 October 2013 21:24, <jonashawrus@xxxxxxx> wrote:




A friend is developing some houses and wants to include "cables for a
smart
home".
My view (that I am looking to be shot down / improved!) is that for
automation he needs to consider Power, Control and Intelligence together
and
consider security, CCTV, TV, data as separate overlays.
Power - the mains wiring should be radial from a (number of) centralised
relay/dimmer locations to the ceiling roses / light fittings / sockets with
normal switch wiring from rose to switch plate.
Control - cable in cat5 radially from one or two centralised locations to
each switch position (for buttons) and to the locations where relays and
dimmers are to be housed.
This will allow his buyers to either opt for not having automation or
choose
between Cbus, Command Fusion, Dupline, Control4, DMX, Idratek or Velbus for
the actuators and switch plates. Bye Bye stand by, Rako and Insteon plus
others can also be considered for wireless solutions.


Intelligence - no further special cabling requirements but the above can be
controlled by one or some of Comfort, Harmony, Idratek plus raft of other
controllers. i.e. The controllers do not require special cabling beyond the
normal practice of running alarm CCTV, TV, data etc cables back to a common
point, as would be done normally for them and structured cabling.


I also looked at what I could find about AMX, Creston, KNX, Lutron. All
seem
to offer their own "special" 4-core cables with 2 for power 2 for
data with
the power cores normally thicker than the data pair and also thicker than
cat5. My guess is these would run fine over cat5 but they may be commercial
issues with not using the vendor cable. I am not so sure about the topology
requirements.


If there was a move towards standard wiring for building control /
automation this would be so much easier.   Does anyone know of vendors
moving towards a standard?



thanks
JonS




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