Amp draw, circuit overloading!


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Old 12-12-13, 09:22 AM
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Amp draw, circuit overloading!

I bought an AC clamp meter and a line splitter recently and have been testing some appliances around the house.... I noticed that many are consuming more current than their nameplates suggest.... for example I have a microwave rated at at 9.5 and its kicking out well over 10 amps.

Now I am starting to worry with that particular 20 amp circuit.

I have the microwave plugged into the same circuit as a fridge (around 7 amps) and about 300 watts of light/ceiling fan combination. Theres also a coffee pot (that kicks out about 6 or 7 amps) on that circuit, although is never is used at the same time as the microwave..... that would probably cause the breaker to trip??

Am I overloading this circuit?
 
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Old 12-12-13, 09:30 AM
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The refrigerator is not constantly running so that part of the load is not much of a concern. The issue would be if you tried to use several appliances and the refrigerator cycled on. Unless the breaker is tripping I would not worry about it. Simply because you have a potential load plugged in does not add to the circuit load unless it is turned on.

The lighting should not be on the kitchen small appliance circuits.
 
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Old 12-12-13, 09:45 AM
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yes, unfortunetly the lights are on the same circuit. ITs an old house.... thats pretty common, no?

So how does the lights play into the equation?
 
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Old 12-12-13, 10:13 AM
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They only factor in if they are on. Again, if the breaker is not tripping I would not be too concerned. A new 20 amp circuit could be added to the countertop if needed.
 
 

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