# Re: mot rewind

```Original poster: "Richard Williams by way of Terry Fritz <twftesla-at-qwest-dot-net>" <richardwwilliams-at-earthlink-dot-net>

Hi Frank,

First measure the core cross-section where the wire will be wrapped.

Volts per turn = (0.16 x CS)

Then divide the desired primary voltage by "volts per turn" to get how many
turns you will need.

#22 can carry roughly 0.85 amps.
So total VA would be 0.85 times the primary voltage.

You can calculate the maximum VA the core is capable of if the wire size can
handle it...

VA=(CS/0.16)^2

You can use 750 circular mils per amp. For a cooloer running tranny use 1000
circular mils per amp.

For example:
#22 is 640 circular mils.

640/750 = 0.85 amps
or
640/1000 = 0.64 amps

A good wire chart can be found here:
http://www.reawire-dot-com/ind_dims_choose.asp

Rick W.
SLC

----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 05, 2002 4:40 PM
Subject: mot rewind

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<PsychoticMinds1-at-aol-dot-com>
>
>
>
>        Hi all
>
>                    I have just been given a 240 mot by a teacher at my
school.
> I ran it 110 but it wasnt enough for me :-)  so i cut the core and removed
the
> primary windings i have a bobin ready to make a new primary out of 22 awg
> magnet wire how many turns would i need?  is 22 awg thick enough wire?
How
> many amps can a 22 awg wire withstand?
>
>
>                  Frank
>
>

```