[Boatanchors] 2nd Newbie Q
rbethman
rbethman at comcast.net
Thu Sep 11 11:49:45 EDT 2014
Looking at the audio use, what Robert says is true!
Microphones use black as ground. The Audio is either white or red,
depending on the specific microphone.
Since this is an audio circuit situation, the "NEC Color designations"
really doesn't apply.
YMMV. My $0.02 worth.
*--
Bob - N0DGN Sarge/Chief and Old goat! Non PC and General Nuisance! *
On 9/11/2014 11:34 AM, WA5CAB--- via Boatanchors wrote:
> A-C Mains (electrical) practice has always (at least since the 30's) been
> generally opposite to standard electronics practice, except for red, which is
> hot in both cultures. Look for example in any Command Set (the generic
> term, not the AAF's function term) chassis and you will see black (or bare) for
> virtually all ground leads of any sort and black not usually used for
> anything else. Generally the same in most US built sets. It's just something
> that "you know" and don't conciously even think about. So using white for
> Common would be contrary to common practice.
>
> In a message dated 09/11/2014 10:00:33 AM Central Daylight Time,
> k2gkk at hotmail.com writes:
>> I believe that your recommendation (in two-pair cables) of using Black
>> for the Common and White for the "Hot" runs counter to normal AC mains
>> practice for "polarity" and is likely to cause confusion and MAY result in
>> negative safety aspects. Otherwise, I understand your points.
>>
*-- Bob - N0DGN Sarge/Chief and Old goat! Non PC and General Nuisance! *
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