mikebusc
Douglassville, PA
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Yes, and in response to the voltage drop problem, that is true. But the laws of electrical current say if voltage drops, amperage will increase, therefore (hopefully) triping the breaker.
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K3WE
Missouri
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mikebusc wrote:if voltage drops, amperage will increase
Better go take a physics class...
...in particular the cause and effect part.
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mikebusc
Douglassville, PA
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?
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mikebusc
Douglassville, PA
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Do you doubt me? Its simple electrical theory. It's called Ohm's law. The wattage divided by the voltage equals amperage (I=P/E). I'm a Master electrician and have been for many years. But don't take my word for it. Go look it up and then get back to us (preferably with your tail between your legs). And by the way, that physics class, done, long ago!
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smkettner
Southern California
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mikebusc wrote:Do you doubt me? Its simple electrical theory. It's called Ohm's law. The wattage divided by the voltage equals amperage (I=P/E). I'm a Master electrician and have been for many years. But don't take my word for it. Go look it up and then get back to us (preferably with your tail between your legs). And by the way, that physics class, done, long ago!
A resistive load will drop amps in proportion to volts.
And inductive load may well have some increase in amps within certain limits.
A regulated power supply will increase amps as voltage drops until too low to regulate.
Microwave will use less power and take longer to warm the food with low voltage.
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mikebusc
Douglassville, PA
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Right, the microwave will take longer beacause of the inverse of the formula. P=IxE. Where P is the watts, I is the amps, and E is the voltage. So lowering either the volts or amps will decrease the watts.
But I think with flexing these college course muscles we've gotten really far away from what the poster wanted to know. Basically, again, if your circuit breaker is working correctly, there should be no potential harm.
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jeffcarp
Des Moines, IA
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Huh? He is absolutely correct.
K3WE wrote:mikebusc wrote:if voltage drops, amperage will increase
Better go take a physics class...
...in particular the cause and effect part.
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jeffcarp
Des Moines, IA
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This is wrong on a number of levels. I have a bachelor science degree in electrical engineering. You guys are simply wrong. The master electrician is correct in his statement. Voltage = amperage x resistance. Power = Volts * Amps. Power stays constant. Therefore voltage and current are inversely proportional. When voltage drops, amps go up. Always have, always will. It is simple math once you have V=I*R and Power = V * I.
smkettner wrote:mikebusc wrote:Do you doubt me? Its simple electrical theory. It's called Ohm's law. The wattage divided by the voltage equals amperage (I=P/E). I'm a Master electrician and have been for many years. But don't take my word for it. Go look it up and then get back to us (preferably with your tail between your legs). And by the way, that physics class, done, long ago!
A resistive load will drop amps in proportion to volts.
And inductive load may well have some increase in amps within certain limits.
A regulated power supply will increase amps as voltage drops until too low to regulate.
Microwave will use less power and take longer to warm the food with low voltage.
* This post was
edited 05/29/12 07:34pm by jeffcarp *
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mikebusc
Douglassville, PA
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Thanks for the back-up jeffcarp.
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1waybro
Cherry Hill, NJ
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What also is at issue is the sensitive electronics circuit boards(frig),controllers(two a/c) that low votage will do just as much harm. These may be damaged before circuit trips on overload.
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