Re: mot rewind

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 1/5/02 7:14:17 PM Eastern Standard Time, tesla-at-pupman-dot-com
writes:



>
>        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
>



Hi Frank,
       #22 is good for only ~1.46 Amps max continuous AC. You need #14 for 8-9
Amps, #10 for 20-22 Amps, and #8 for 30-35 Amps. A very efficient cooling
system will extend these somewhat, but (IMO) you won't be able to run #22 wire
above ~2.5Amps. A 1000W supply at 240V draws ~4.17 Ampswhich would mean #16 or
#17 or a well cooled #18. At 120V it would draw ~8.3 Amps which means #14 wire.
For more details, check the archives for April 1998.
Matt D.