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echristley(at)nc.rr.com
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 Posted: Mon Oct 02, 2006 8:33 am Post subject: fat wire - skinny wires |
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I seem to remember there being some rationale for not running fat wires
in the same bundle with skinny wires, but I can find a specific
reference to it in the "Aero-electric Connenction". Does such a
rationale exist, or am I suffering from delusions of toxic aircraft
chemical fumes?
My #2 battery cable currently follows a rather tortuous path from the
tailpost to the front of the plane, and I could be a lot simple (and a
few pounds lighter), if it just ran down the side with a bunch of wires
that include microphone/headphone leads, taillight, tail strobe, fuel
pump powere, and a linear actuator control leads.
--
,|"|"|, Ernest Christley |
----===<{{(oQo)}}>===---- Dyke Delta Builder |
o| d |o http://ernest.isa-geek.org |
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nuckollsr(at)cox.net
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| Posted: Mon Oct 02, 2006 7:03 pm Post subject: fat wire - skinny wires |
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At 12:32 PM 10/2/2006 -0400, you wrote:
| Quote: |
<echristley(at)nc.rr.com>
I seem to remember there being some rationale for not running fat wires in
the same bundle with skinny wires, but I can find a specific reference to
it in the "Aero-electric Connenction". Does such a rationale exist, or am
I suffering from delusions of toxic aircraft chemical fumes?
|
That was a tongue-in-cheek reference to the fact that the
FAT wires are those that carry largest system currents,
generate the largest local magnetic fields and TEND
to be ranked on the antagonistic side for noise.
Audio, signal and small control wires are SKINNY
types that TEND to be potential victims.
Having said all that, it's easy to design systems
having a mix of antagonistic and victim wires in
very close proximity to each other in same bundles.
But it does take some time, attention and experience
to do this with consistent success.
| Quote: | My #2 battery cable currently follows a rather tortuous path from the
tailpost to the front of the plane, and I could be a lot simple (and a few
pounds lighter), if it just ran down the side with a bunch of wires that
include microphone/headphone leads, taillight, tail strobe, fuel pump
powere, and a linear actuator control leads.
|
As long as you've followed the guidelines for avoiding
multiple grounds (ground loops) within single systems,
the noise risk for bundling the wires you've listed
is very low.
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
---------------------------------------------------------
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