Normal Voltage drop on 20 amp circuit?


Old 02-03-08, 02:01 PM
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Normal Voltage drop on 20 amp circuit?

I have a new home with a 20 amp circuit shared between the kitchen and den. There are 11 recepticles on the circuit. I use the den for my home theater with a surge protector that has a constant line voltage display. With no load (or light load with all equipment on standby), the voltage fluctuates between 118-121. However with a 1500 watt load (toaster oven) in the kitchen, voltage drops from 120 to 113. If I add another 800 watts (toaster) voltage drops to 110. Is this normal, and if not what might the problem be?

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Old 02-03-08, 02:27 PM
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I am surprised that a kitchen circuit is shared with the den. Your load represents 19 amps. A 9% drop under that load is not outrageous. You will probably experience some "nuisance" breaker trips on this circuit.

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