tongaloa wrote:

You could always run your wire through woven glass sleeve
if visions of vapor are standing in the way of progress.
Ceramic beads would work too but are heavier. Or if the airframe
is all non-conducting composite, or wood, just route bare wires
and don't worry about insulation. Of course you'll still have
the fumes/smoke problem if they get hot. Best is no wire. Just
send a kid out on the wing with a kerosene lamp or a burning handful
of straw(like the kid shimmying up the mast on the fishing junks in the
South China sea when the see your cable dragger bearing down on them.
Cable over nets like stone over scizzors or sail over power unless power
is dragging cable. Dragging cable has ROW over everything. You thought
flying was complicated.

Or?

Design the electrical system with the corect protection devices
(fuses and/or breakers) so that it CAN'T catch fire...

Just a thought.

Richard