RE: [CAD_CAM_EDM_DRO] Stepper and Servo power supplies: Microwave Oven Transformers for sale

AWG (American Wire Gauge) is what I am used to.
10 Gauge is good for 30 Amps, 8 AWG = 40 and 6 AWG will get you 55 Amps.

Wikipedia has an article with metric conversions and the formulas and
ampacitys:
http://en.wikipedia.org/wiki/American_wire_gauge

There is a lot of room to play with. My first recent project was when I
got a 1.5KW transformer a month ago. I have been making a spot welder
from it using six turns of 4/0 welding cable and there was some room to
spare. Still working on the design for the handpiece and welding tips
but it works great.

Also, just as a heads up: All of the microwave ovens I have been taking
apart were not working. Bad magnetrons, bad controllers and probably a
bad transformer or two. I will be testing each transformer before
offering it for sale. The sheet metal is being recycled by a local
steel company. The composite doors will be visiting Landfill Camp for a
long long time but that is a lot better than an entire Microwave Oven.

Dave

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Ron Kline
> Sent: Sunday, February 12, 2006 9:04 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Stepper and Servo power
> supplies: Microwave Oven Transformers for sale
>
>
> What gauge wire would you use ?
>
>
> Dave Halliday wrote:
>
> >I have successfully used Microwave Oven transformers for
> making your own
> >low voltage, high power supplies and have been collecting them for a
> >couple of my own projects. Last week, I placed an advertisement in a
> >local want ad paper and found a guy with over twenty of them!
> >
> >Needless to say, I have quite a few more than I need. The
> smallest of
> >the ovens was rated at 600 Watts (which is 20 amps at 30
> volts). I have
> >a few that are 1KW and higher.