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?

Jasper