Wiring US appliances to a site transformer

eoinbyr · 04-12-2012 10:25PM #1

Hi guys

I have a 110v site transformer to step down a mains supply to allow me to run a US threadmil (I know the freq changes may make the motor run a little slower).

My question is how should I wire up the new yellow 110v plug. From what I understand the larger pin in the middle is earth and each of the side pins carry 55v? The wire going to the threadmill has a black / white / green setup so a brief check on the net suggests black = live, white = neurtral, green = earth. I assume that once I wire green to the middle prong on the yellow plug it shouldn't matter which prong the live and neutral wires go to as they will both be carrying with + or - 55v?

Does that make sense?

Cheers

Bruthal · 04-12-2012 10:29PM

eoinbyr wrote: »

Hi guys

I have a 110v site transformer to step down a mains supply to allow me to run a US threadmil (I know the freq changes may make the motor run a little slower).

My question is how should I wire up the new yellow 110v plug. From what I understand the larger pin in the middle is earth and each of the side pins carry 55v? The wire going to the threadmill has a black / white / green setup so a brief check on the net suggests black = live, white = neurtral, green = earth. I assume that once I wire green to the middle prong on the yellow plug it shouldn't matter which prong the live and neutral wires go to as they will both be carrying with + or - 55v?

Does that make sense?

Cheers

Yea you can connect them either way, no difference. Id say the motor will run at its normal speed too, unaffected by the frequency, as the frequency will only affect induction motors. That probably has a DC motor.

eoinbyr · 04-12-2012 11:57PM

great - thanks

Bruthal · 04-12-2012 11:58PM

Let us know how it goes.

eoinbyr · 06-12-2012 02:21PM

Seems to be working fine - thanks

Wiring US appliances to a site transformer

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