In article , Jasper Janssen wrote:
On Wed, 11 Oct 2006 10:47:36 -0700, David Nebenzahl
wrote:
spake thus:

stupid question # 428

if silicones insulate electrical wires then what are silicone spark
plugs leads (wires)?

The silicone is the insulator in them; the conductor is, usually,
carbon-impregnated fiber of some kind (basically a big long resistor).

Why don't spark plug leads get made out of metal, copper or whatever?

They used to be. Might even be able to get racing wires. They generate a
lot of RF interference. Using resistor plugs helped a bit in this case.

greg

greg