Posted by George Marsh on January 11, 2014 at 08:23:29 from (50.121.7.90):
I unpluged my cell phone when the reoccuring thought came back about unpluging transformer adapters when not in use. Transformers are inductive loads, with some resistance. The current in a transformer is out of phase with the current an electric meter can measure. The transformer current is more than the current the meter can measure.
So, if all the above is true, then the heat created inside the transformer, I squared R, will be more than what I'm paying for?
Or another way of looking at it, I would have to use more current to generate the same amount heat if I'm using just a resistor. Therefore, it would cost me more to make heat.
The reoccuring thought is, If I had a large inductive load, like a large transformer connected to a power source, not removing power from secondary, would I be making more heat inside the transforemer without the electric meter seeing all the current in the inductive load?
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