[SML] ClearComm questions

[Steven Santos]

Would it cause any problems if 12g wire was used for this? That would
be the same gauge used for 20amp wiring...

On Fri, Feb 17, 2017 at 12:54 PM, Nigel Worsley <niglew at googlemail.com> wrote:
>>   18g?  20g?
>
> The thicker the better, especially if you are using speakers and not
> just headsets. The ground wire is shared by the power and audio, so
> the extra power drawn by the speaker amplifier gets superimposed on
> the audio. If the wire is too thin then a feedback situation can
> develop when the volume is turned up, I had this happen on an
> installation that used 0.5 sq mm cable (about 20g), but there were
> some unused wires installed that allowed the ground wire to be doubled
> up which fixed the problem. I would say that 18g is the minimum to
> use, and go bigger if practical.
>
> Nigel Worsley