Re: MOT testing

```Original poster: "Alexander Rice by way of Terry Fritz <twftesla-at-qwest-dot-net>" <alex-at-rices.myip-dot-org>

>Original poster: "Tim J by way of Terry
Fritz <twftesla-at-qwest-dot-net>"
<digital_raven45-at-hotmail-dot-com>
>
>The best way to measure a MOT is by
feeding 120V or 240V (depending on MOT)
>into the secondary. The primary should be
around 5 to 6 Volts output. Then
>you take 120V or measured mains voltage
and divide by primary Volts.
>
>120 V
>_____  =  20:1 transformer or 2400 VAC
>
>6 V

that is fine to measure turn ratio

>
>
>......then once your done that step use
the mA current setting to measure
>output current on the primary. This will
tell you what sort of drawing rate
>the transformer has.

Tim,

um, no actually it will just blow the
fuse, if a transformer transforms voltage
in the ratio 1:20 then it transforms
current in the ratio 20:1 . since you are
operating the device in reverse you have
120/20 = 6v but at (guessing 13A
'secondary' current) 13*20 = 260A which

regards

alex

------------------------------
Alexander JJ Rice
Geek#-1232
Rank : G-2 (Wahey!)
http://www.TheGeekGroup-dot-org
"Because the Geek Shall Inherit the Earth
!"?

```