Re: Wire gauge

• To: tesla-at-pupman-dot-com
• Subject: Re: Wire gauge
• From: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Sun, 28 Feb 1999 12:31:54 -0700
• Approved: twf-at-verinet-dot-com

Hi Sam,

>Original Poster: "Samuel Rosset" <samr-at-chez-dot-com>
>
>I have a problem with converting the gauge in inches, for I have
several
>sources and they are different. For example, with one source, a #26 AWG
>would have 58 turns per '' and another one says there are 63 turn per
''
>Does anyone know the diameter for the wires AWG #26, #24 and #22


The problem is that the insulation does not have a normed size (like the
bare wire does). This is why an AWG 26 wire can wind 58 tpi (thick
insulation) or 63 tpi (thin insulation). Best bet is to whip out your
micrometer and measure it. Using the formula (1/wire o.d.) you can
calculate the true tpi. You might want to add 0.0001-0.0005"
to your measured thickness, because you will never be able to wind
the wire without a verrrrry small space in between. If you wind 1000
turns, that small space does make a difference. It really depends on
how exact you want/need to know it.

Coiler greets from germany,
Reinhard

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