In article , Owain
writes
Stewart Pinkerton wrote:
No, his suggestion is entirely sensible, whereas every RATA product is
liberally smeared with snake oil, which can get smelly after a couple
of years........................

I'm sure you can send the cable back every couple of years for a service
to have the crystals holistically realigned to restore the original
performance.

Worth paying that little bit extra for the in-home service, I always
say, as this guarantees correct synchronicity with the localised chakras
in the listening environment.

Owain




Quite!. CAT 5 cable has better properties in this respect!....
--
Tony Sayer

In article ,
Jim Gregory wrote:
Maximum current handling is dictated by size of remaining "solo" core.
And 2.5mm wires can handle 16Amps continuous AC easily!

230v AC rating is 24 amps. However, this doesn't mean the cable will melt
at 25 amps. It's simply a guide that mains voltage drop will be acceptable
at that current over the lengths likely in a domestic environment.

F

--
*Why do overlook and oversee mean opposite things?

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in
message
In article ,
Jim Gregory wrote:
Maximum current handling is dictated by size of
remaining "solo" core. And 2.5mm wires can handle 16Amps
continuous AC easily!

230v AC rating is 24 amps. However, this doesn't mean the
cable will melt at 25 amps. It's simply a guide that
mains voltage drop will be acceptable at that current
over the lengths likely in a domestic environment.

I'm under the impression that heating inside conduits with
multiple conductors and long-term degradation of insulation
is considered when rating electrical wiring.

So in that case, with a duty cycle of maybe 1:10,000 illustrating the
mega-rare need to cope with 3kW instantaneous audio power, it must be seen
to run safe and cool well below max-rated steady state AC current, but who
said anything about enclosing the twin and earth ribbon in conduit (mild
steel or PVC)? Poster will have moved home by the time PVC degradation ever
happens!

"Arny Krueger" wrote in message
...
"Dave Plowman (News)" wrote in
message
In article ,
Jim Gregory wrote:
Maximum current handling is dictated by size of
remaining "solo" core. And 2.5mm wires can handle 16Amps
continuous AC easily!

230v AC rating is 24 amps. However, this doesn't mean the
cable will melt at 25 amps. It's simply a guide that
mains voltage drop will be acceptable at that current
over the lengths likely in a domestic environment.

I'm under the impression that heating inside conduits with multiple
conductors and long-term degradation of insulation is considered when
rating electrical wiring.

On Tue, 20 Sep 2005 17:49:31 GMT, "Jim Gregory"
wrote:

I wouldn't worry one iota for the R, L, C values for a length of about 3-4
metres handling 100W into 4-8 Ohms. Solid copper wires are a Luxury.
If sticking to running Twin and Earth cable, there would be a wasted
"centre" conductor which IMO is best paralleled with the "neutral" core at
both ends, and done for each channel! So each used pair's very low loop
resistance would then drop by a further 25%. Maximum current handling is
dictated by size of remaining "solo" core. And 2.5mm wires can handle 16Amps
continuous AC easily!

Um, make sure you connect the earth wire to the same conductor at each
end.......................

And *never* top-post!

--

Stewart Pinkerton | Music is Art - Audio is Engineering

On Wed, 21 Sep 2005 11:28:30 -0400, "Arny Krueger"
wrote:

"Dave Plowman (News)" wrote in
message
In article ,
Jim Gregory wrote:
Maximum current handling is dictated by size of
remaining "solo" core. And 2.5mm wires can handle 16Amps
continuous AC easily!

230v AC rating is 24 amps. However, this doesn't mean the
cable will melt at 25 amps. It's simply a guide that
mains voltage drop will be acceptable at that current
over the lengths likely in a domestic environment.

I'm under the impression that heating inside conduits with
multiple conductors and long-term degradation of insulation
is considered when rating electrical wiring.

Correct. The current rating is tied to a specified temperature rise of
a specified length in a specified conduit (can't remeber the details,
but it's all in an ISO spec somewhere).
--

Stewart Pinkerton | Music is Art - Audio is Engineering

"Jim Gregory" wrote in message

So in that case, with a duty cycle of maybe 1:10,000
illustrating the mega-rare need to cope with 3kW
instantaneous audio power, it must be seen to run safe
and cool well below max-rated steady state AC current,
but who said anything about enclosing the twin and earth
ribbon in conduit (mild steel or PVC)? Poster will have
moved home by the time PVC degradation ever happens!


Agreed - the application is overkill.

In article ,
Arny Krueger wrote:
230v AC rating is 24 amps. However, this doesn't mean the
cable will melt at 25 amps. It's simply a guide that
mains voltage drop will be acceptable at that current
over the lengths likely in a domestic environment.

I'm under the impression that heating inside conduits with
multiple conductors and long-term degradation of insulation
is considered when rating electrical wiring.

Yes - that 24 amps is for 'normal' installation. If the cables are bunched
or insulated heat wise in other ways you'd have to de-rate them.

But in the UK it's not usual to use conduit for house wiring. TW&E - twin
and earth in an outer PVC casing - is the standard.

--
*Great groups from little icons grow *

Dave Plowman London SW
To e-mail, change noise into sound.