[TCML] Wire Gauge
jimlux at earthlink.net
Sat May 31 09:05:05 MDT 2008
>From: Jim Mora <wavetuner at gmail.com>
>Sent: May 30, 2008 7:22 PM
>To: 'Tesla Coil Mailing List' <tesla at pupman.com>
>Subject: RE: [TCML] Wire Gauge
>Go 6awg or you will wish you did later when you want more power...100' is a
>ways too. Is this direct burial, conduit, or overhead? In a conduit I think
>you have to de-rate for heat build up.
>Our resident Electricians should know and there is a lot of stuff on the
>Internet regarding voltage drop and code.
An easy way to remember the wire gauge stuff is as follows:
AWG 10 is about 0.1 inch in diameter, and 1 milliohm per foot.
Every 3 gauges is twice/half the cross section, so the resistance halves/doubles.
Every 10 gauges is ten times/a tenth of the cross section, etc.
AWG 20 is 0.01 ohm/foot
Every 6 gauges is twice/half the diameter
Every 20 gauges is 10 times/a tenth the diameter (so AWG30 is about 0.01" in diameter, and 0.1 ohm/foot)
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