# Calculating Three-Phase Power 110V

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#### CharlesFG

Hello,

When calculating a 3-phase balanced power 320V line to neutral I know that the formula for power is

P=root(3) X V (line to line) X I(line).

So what would I use if the power source is 110V (line to neutral)? What number would change based off this new number?

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#### Gerald

For starters, power consumption depends upon your load. And from that, the load is either unbalanced or balanced. You obviously want the latter.

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#### CharlesFG

Well, I have a 110V-3 phase supply. The thing is my load is 220V so I am using on the load side potential difference between the 2 voltages instead of using voltage to neutral.

And then when I calculate my power consumption is the same (as using 220V single). But wouldn't it be lower because I am using 110V instead of 220V on a single line.

Am I doing my calculations wrong?

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#### Gerald

There are many online calculators that I bet you could use.

Are you looking to calculate the power dissipation based off this?

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Did that help?

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#### CharlesFG

I found what I was looking for.

Used the 320V line just fine.

#### powerwalt

Hello,

When calculating a 3-phase balanced power 320V line to neutral I know that the formula for power is

P=root(3) X V (line to line) X I(line).

So what would I use if the power source is 110V (line to neutral)? What number would change based off this new number?