Electrical Meter Question


Old 09-20-05, 12:47 PM
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Electrical Meter Question

How are electrical meter sensing current? Are they sensing on both of legs or one leg coming into typical home? Is there a diffence in dial meters or electronic type?
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Old 09-20-05, 12:59 PM
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They all sense both legs. In other words, they accurately measure the actual energy you are using, and there is no way to trick them by moving loads from one leg to another. A common myth is that you can reduce your power bill by balancing the panel.
Old 09-20-05, 01:02 PM
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Old 09-20-05, 01:29 PM
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It's interesting to know that a KWHR meter is an "integrating" instrument. To integrate is to calculate the area enclosed by a curve or line.

A graph of the "instantaneous" power plotted against time is often an irregular curve. Starting with a KWHR meter-reading of 0000,Time 0, the instantaneous power at time-intervals could be ---- T1, 1500 watts---- T6, 800 watts------ T8, 3200 watts------T12, 2600 watts----- T14, 600 watts.

If the KWHR reading after 100 hours = 200, then the power consumed is equivalent to a "constant", "steady" load of 2000 watts = 2KW. 2KW X 100 hours = 200KWHR's

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