You can put a 1000 amp pulse down #12 wire. I've seen 10 amps go through
wire wrap wire.
BUT is an insulation issue too. You don't want the wire to have enough
temperature rise that the insulation breaks down or starts a fire inside a
wall. Remember power factor. An amplifier with no PFC will draw high peak
currents so the voltage drop could be higher than expected but the RMS
temperature rise could be small. I prefer a bit of over kill myself in my
wiring. America is great do what you want.
Rick I'm sure there is a bit of air blowing around your wire wound resistor.
-----Original Message-----
From: R. Measures [mailto:r@somis.org]
Sent: Wednesday, October 19, 2005 10:57 AM
To: Carcia, Francis A HS
Cc: jsb@digistar.com; Bill Coleman; amps@contesting.com; Tony King - W4ZT
Subject: Re: [Amps] AC wiring
On Oct 19, 2005, at 7:08 AM, Carcia, Francis A HS wrote:
> I use to have #10 wiring to our dryer. That wire warmed up when the
> thing
> was running.
> Yea, #10 is ok for a 30 amp circuit. I changed to #8 then changed the
> stove
> to #6.
> I agree I don't like temperature rise with wire going through walls. I
> compare it to breathing through a straw.
Good point, which is why #22 will safely carry 14A in free air, but 22
is only good for c. 1A when confined.
>
> -----Original Message-----
> From: jsb@digistar.com [mailto:jsb@digistar.com]
> Sent: Wednesday, October 19, 2005 9:50 AM
> To: Bill Coleman
> Cc: amps@contesting.com; Tony King - W4ZT
> Subject: Re: [Amps] AC wiring
>
> On Tue, 18 Oct 2005, Bill Coleman wrote:
>
>> Seems to me that 12.3 A and 13.4 A are both less than 15 A. So a #14
>> circuit seems adequate for your example.
>
> I've got a 1500W space heater but I run it on the lower power setting
> (900W) because i'm afraid the 1500W setting would burn the house down
> as
> it is fed with #14 on a 15A circuit.
>
> Seems like even 12 amps on a #14 circuit is too much? I get a little
> puckery thinking about running 12A for hours on #14.
>
>
> 73 Jason N1SU
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>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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