There are plenty of non Teflon insulations that go from 105C to higher.
Modern vehicles have gone to 175-200C wiring in some areas as a means of
reducing copper weight..
Carl
KM1H
----- Original Message -----
From: <Gudguyham@aol.com>
To: <n4kwpete@centurylink.net>; <amps@contesting.com>
Sent: Sunday, July 08, 2012 1:17 PM
Subject: Re: [Amps] Filament Xfmr
> If the wire is Teflon it will probably be fine. Can you tell if it is?
>
>
> In a message dated 7/8/2012 1:01:03 P.M. Eastern Daylight Time,
> n4kwpete@centurylink.net writes:
>
> I ordered a filament transformer for a 4CX1500B linear that I am
> building.
>
> When I received the transformer all looked great to me except for the
> secondary pigtail wires. The tube requires 6vac at 10amps, the pigtails
> provided are about five inches long and are a #18 well insulated wire.
> Being concerned with the wire size it put the transformer under load and
> drawing 10amps left it that way for about an hour. The wire did not
> over
> heat in that time but hey how about hours of operating. Should I be
> concerned with the wire size. I have looked for information on how to
> figure how much current various wire sizes can carry and at various
> voltages
> and have not found anything.
>
> 73 Pete N4KW
>
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