Re: MOT current draw question

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi,

At 09:48 AM 1/19/2002 +0900, you wrote:
.......
>JW replied:
>
>Hey, I'm also having the same problem....I was doing a 2 MOT series...and it 
>looked like I was pulling 120V -at- 20A out of a 15A plug! I got a 13" arc at 4 
>kV....then "BANG!" I overloaded the 15A breaker. My peak output would be 4kV 
>-at- 600 mA!!
>...my smallr MOT's are only sucking 6.6A on 120V.....but they can draw 3 X 
>that amount in series!
>

I guess this is not surprising.  Consider if the MOTs put out 2000 volts
each and you coil is 5000 ohms.  With one MOT you have 2000 volts at 0.4 amps.

Two MOTs give 4000 volts at 0.8 amps.  But the power in the first case is
800 watts and in the second case it is 3200 watts.  For the 120VAC to
supply 800 watts takes 6.66 amps but you need 26.66 amps (4X) in the second
case.  

So if you double the secondary voltage, you get 4 times the power and need
four times the input current.

Hope that is sort of clear as to what I mean...

Cheers,

	Terry