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How does the meter know whether power is being consumed or generated?

Submitted by Guest on Sun, 08/12/2013 - 01:44

Can one mains meter perform(measure) both functions at the same time? How does it know which is which, whats usage of the power company's power by the homeowner and whats being generated coming into the grid?

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Robert Wall's picture

Re: How does the meter know whether power is being consumed or generated?

Submitted by Robert Wall on Sun, 08/12/2013 - 01:49.

It is down to the relationship between the voltage and the current. Read AC Power Theory - An introduction

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dkenrgyfrk's picture

Re: How does the meter know whether power is being consumed or generated?

Submitted by dkenrgyfrk (not verified) on Sun, 08/12/2013 - 03:20.

Thank you, that works.

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