nuckolls.bob(at)aeroelect
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 Posted: Fri Dec 26, 2008 4:12 pm Post subject: Is this scheme valid to save weight, add flexibility and |
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Same question with Chlorinated Polyethylene jacketed welding cable:
Are you be happy with using Chlorinated Polyethylene jacketed welding
cable for the full run to and from engine to aft battery knowing if it
smokes, a dozen feet is in the cockpit (aeroplane is fiberglass)? How
about only 1 foot?
| Quote: | Speaking of smokng wires, one time when I was working on a certificated
airplane, I inadvertantly shorted a #22 compass light wire. Almost
immediately the cabin was filled with black acrid smoke. I was almost
overcome. I ran out to the hangar door to get some fresh air. I still
marvel at how much nasty material just 6 inches of tiny wire can create.
I think the safest course is to avoid any smoking wires, either one foot
or twelve feet, I think either one would probably kill you.
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Without a doubt, the smoking of wires with insulation
of any pedigree produces a most disagreeable atmosphere.
But at the same time, let's made a distinction between small
wires that are ROUTINELY protected and fat wires that are
not. Small wires are very likely to smoke when driven by
high current sources. FAT wires are generally few in number,
installed with special care and more likely to burn away the
faulting intrusion than to burn and become an emitter of smoke.
Small wire protection is generally takes the form of breakers or
fuses (I prefer fuses cause they're light, cheap, fast
and take up minimum panel space on airplane). Had the #22 wire
cite above been thoughtfully protected, the outcome of the
experience would have been much less exciting.
Bob . . .
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( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
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