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How are you measuring this power...Peak-to-peak, RMS, average? Standard power in the US (and most of North America) is 120V/240V split-phase power. If you are reading 150V at your outlets, you need to call an electrician. That is not normal...or good!

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12y ago
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13y ago

Usually it is caused by a faulty ground at your main panel.

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Q: Why does a 120 volt ac outlet have 150 volts in your house?
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Why is it that the outlet shows 209 volts instead of 120 volts?

Because it is a 220 volt outlet instead of a 120 volt outlet. Now, if this is a standard 120 volt outlet that is reading 209 volts then someone has made a mistake in the wiring. You need to call an electrician to straighten this out.


Where is the problem if you have 240V on your 120V outlet and 120V on the neutral?

Someone has wired 240 volts into your 120 volt outlet. If you have 240 volts you need a specially configured outlet so that a standard 120 volt plug cannot be inserted. If you have this situation you would see 120 volts to ground and not neutral. Sometimes if you don't look carefully an outlet will look like the standard 120 volt variety but it isn't. One of the slots is horizontal and not vertical although there may be a small vertical split. 240 volts doesn't just magically appear. What you are describing is on purpose. If it really is 120 volt receptacle you need an electrician to put in the proper receptacle or re-wire the circuit.


Can you plug a 100 volt power tool into a 110 volt outlet?

Never heard of a power tool that runs on 100 volts AC. It would have to be 108 to 120 volts or 220 to 240 volts. It will work on the 120 volt outlet if is it 60 hertz in the U.S. or 50 Hrtz in some other countries. If it is 50 Hrtz then do not use it in the U.S. without a converter.


What if you only get 118 volts on a 120 outlet?

There is no problem with that voltage. As long as the voltage is plus or minus 5% of the nominal voltage of 115 volts it is considered to be in the 120 volt range.


Can 110 volt be used for 115 volt?

Yes - usually house voltage varies from 110 to 120 volts.

Related questions

Why is it that the outlet shows 209 volts instead of 120 volts?

Because it is a 220 volt outlet instead of a 120 volt outlet. Now, if this is a standard 120 volt outlet that is reading 209 volts then someone has made a mistake in the wiring. You need to call an electrician to straighten this out.


What is the electrical voltage from the house outlet to the power supply?

The average voltage a house outlet will give actually depends on how far of a distance the house is from a transformer on the pole. If the house is fairly close to the transformer, it will probably give around 120 volts. However, if the house is a bit far from the transformer, it will probably give around 107 volts.


Can a 120 hair dryer work with a 110 outlet?

Yes - a hair-dryer rated at 120 volts will work in a 110 volt outlet.


Can a 120 volt appliance run on a 110 volt circuit?

Yes. Circuits in a home are 120 volts but people tend to call them 110 volt circuits. The 120 volts you read on the appliance is the maximum voltage the appliance can handle. The actual voltage you will read at any outlet will range from 110 to 120 volts.


How do you convert 120 volt machine to 110 volt plug?

No conversion needed. These are nominal voltages which range from 110 to 120 volts. It will operate fine on the outlet.


Where is the problem if you have 240V on your 120V outlet and 120V on the neutral?

Someone has wired 240 volts into your 120 volt outlet. If you have 240 volts you need a specially configured outlet so that a standard 120 volt plug cannot be inserted. If you have this situation you would see 120 volts to ground and not neutral. Sometimes if you don't look carefully an outlet will look like the standard 120 volt variety but it isn't. One of the slots is horizontal and not vertical although there may be a small vertical split. 240 volts doesn't just magically appear. What you are describing is on purpose. If it really is 120 volt receptacle you need an electrician to put in the proper receptacle or re-wire the circuit.


Can you plug a 100 volt power tool into a 110 volt outlet?

Never heard of a power tool that runs on 100 volts AC. It would have to be 108 to 120 volts or 220 to 240 volts. It will work on the 120 volt outlet if is it 60 hertz in the U.S. or 50 Hrtz in some other countries. If it is 50 Hrtz then do not use it in the U.S. without a converter.


What if you only get 118 volts on a 120 outlet?

There is no problem with that voltage. As long as the voltage is plus or minus 5% of the nominal voltage of 115 volts it is considered to be in the 120 volt range.


Can 110 volt be used for 115 volt?

Yes - usually house voltage varies from 110 to 120 volts.


Can you plug a 120 volt appliance to 110 volt outlet?

Yes, normally, assuming it's 60 cycle (hertz) AC. In the USA, 110 volts as such is no longer used, it's really 120 plus or minus about 5 volts everywhere.


Can i get 220 volt out of 120volt outlet?

No. It would have to be wired for 220 volts and would have to be rated for 220 volts and would have a different configuration so that a typical 120 v plug wouldn't fit the outlet.


Can you plug a 110V appliance into a 115V outlet?

120 Volts and 115 Volts refer to the same thing in the US. Residential electricity is provided at 120 Volts from the utility. High current devices such as motors are often rated at less than the supplied voltage (such as 115 Volts) because it is expected that there is a small amount of voltage drop in the circuit feeding them. The National Electric Code allows a 5% drop in voltage from the electric service so a 5 Volt drop from 120 Volts is OK.