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What would be the cause of dimming lights in a residence due to intermittent low voltage dips
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low voltage
If you are at the end of a high voltage run, you can have a voltage problem. Also if the transformer ground of the pole-top is corroded or not there you can have voltage problems. Does your power company have occasional brown outs or load shedding? This could be another cause. -
voltage drop
In addition to brown outs, whatever the transformer sees on its primary winding will be reflected on its secondary winding.
If the voltage goes up, the transformer voltage goes up [within reason]
The power station has regulatory curcits to keep the voltage constant at a 60 cycle rate. VARS which are volts/amps reactive are regulated by inserting resistance or capacitance in the output power.
A user of power with large motors will drawn the line voltage down so capacitance is added into the line to keep the voltage up.
When he drops the motor out capacitance is removed to drop the output power.Comment
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