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BenandAmber
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Joined: 16/02/2019
Location: United States
Posts: 961

Posted: 09:14pm 22 Nov 2019

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In the United States we have two legs of 110 (120) volts a neutral and a ground

The electric companies high-voltage line is fed to a large Transformer on a utility pole

that Transformer has a center tap on the low side( the side that goes to customers disconnect)

that's Center tap( neutral) enables two legs of 110 volts(120) or 220 volts(240)

All most everything in the average American home runs off 110 volts

Exceptions are clothes dryer, hot water tank, cook stove, and central air these run on 220 volts

I have set all of my inverters up as hundred and ten volts up to this point

In the future if I set a China board
(or Nano) up for 220 how would that affect the voltage feedback

Especially when using 110 volts off of one side of the Transformer

I just can't wrap my head around how that would work

It seems to me like the voltage feedback wouldn't read right when using 110 volts

Any information on this subject would be greatly appreciated

be warned i am good parrot but Dumber than a box of rocks

Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406

Posted: 10:07pm 22 Nov 2019

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Just wind the transformer for your inverter with a 220v secondary with a centre tap.
It will work exactly the same as the pole transformer out in the street.

You can connect the voltage feedback across EITHER the whole secondary (220v) or half of the secondary (110v) and it will work fine either way.

Cheers, �Tony.

BenandAmber
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Joined: 16/02/2019
Location: United States
Posts: 961

Posted: 12:00am 23 Nov 2019

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Thank you warpspeed I appreciate it

I guess I was trying to over think it

be warned i am good parrot but Dumber than a box of rocks

BenandAmber
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Joined: 16/02/2019
Location: United States
Posts: 961

Posted: 05:51pm 23 Nov 2019

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Warpspeed if you ever get a little extra time could you explain why this works

I know it is true because you said it

I have zero doubt after your response

I'm still having a little bit of a hard time wrapping my head around it

why if the voltage goes down on one side of the Transformer it goes down on the other

If flux is the right word I think it goes down equally throughout the core no matter which side is drawing the load

And another thing that is really bothering me that would really like a answer on

I honestly think a Transformer that is stacked higher instead of wider works a lot better

Longer part of the wire going through the hole on a taller one

Thanks again warpspeed
Edited 2019-11-25 00:13 by BenandAmber

be warned i am good parrot but Dumber than a box of rocks

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