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That could only happen if the neutral wire (white) becomes disconnected at either the panel, the meter base or the transformer.

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Q: How can voltage increase to 240V when only 120V is coming from the breaker box?
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What size breaker to use for a hand dryer its 120v 20amps?

Single pole 20 amp breaker.


How can you plug 2000 watts 240v into a 120v 20 amp breaker with out replacing your breaker and all the plugs on the line?

You can't.


What voltage should read at the outputs of a hundred amp breaker?

It depends on where the breaker is fitted. Is it installed in a panel in the US, Canada or another country which also uses the 60Hz, 120 Volts standard supply service?Or is it fitted in Europe or elsewhere using the 50Hz, 230 Volts standard?As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.The amperage of the breaker dont determine the voltage reading. If your panel is 120v every breaker regarding of amperage rating or size will still read 120v. but to answer your question as it reads... the voltage on the output should read the same voltage as the input or line side.. that is if the breaker is in the on position.


Can you have a 120v circuit on a 30 amp breaker?

Yes you can, However the wire leading out from the breaker must be rated for 30 or more amps, otherwise there is a fire hazard.


600 watts requires how many amps?

It depends on the voltage source. watts = voltage * voltage / resistance and amps = voltage / resistance example 1: To produce 600W from a 120V source, you need a resistor of size 120V*120V/600W = 24 Ohm. This would pull 120V/24 Ohm = 5 amps. example 2: To produce 600W from a 240V source, you need a resistor of size 240V*240V/600W = 96 Ohm. This would pull 240V/96 Ohm = 2.5 amps.

Related questions

How much voltage should be in 2pole circuit breaker?

In America, a 2-pole breaker is controlling 240V. 120V per leg.


If you have low voltage lights in your yard and you want to install a decorative street lamp how do you increase the voltage to power the 120V street lamp?

you don't run a new 120 line


What breaker to use in a bedroom that holds up to 15 amps with 120v?

15 amp breaker.


What size breaker to use for a hand dryer its 120v 20amps?

Single pole 20 amp breaker.


What is voltage in Mexico city?

It is 120V/60Hz


Can 120V appliance work with 220V?

120V appliance will not work on 220V. Use an instrument transformer or voltage regulator to adjust the high voltage to the desired level.


How can you plug 2000 watts 240v into a 120v 20 amp breaker with out replacing your breaker and all the plugs on the line?

You can't.


What is the voltage of a series circuit with four voltage drops of 30 volts?

there is 120V across the circuit.


What voltage should read at the outputs of a hundred amp breaker?

It depends on where the breaker is fitted. Is it installed in a panel in the US, Canada or another country which also uses the 60Hz, 120 Volts standard supply service?Or is it fitted in Europe or elsewhere using the 50Hz, 230 Volts standard?As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.The amperage of the breaker dont determine the voltage reading. If your panel is 120v every breaker regarding of amperage rating or size will still read 120v. but to answer your question as it reads... the voltage on the output should read the same voltage as the input or line side.. that is if the breaker is in the on position.


What is the voltage drop of a series circuit with four voltage drops of 30 volts?

there is 120V across the circuit.


What is wrong with your 240 outlet if it is only outputting 120v and breakers are just fine?

A breaker will not step-down power/ voltage. Its most likely a problem from your suppliers. More likely you aren't measuring the voltage correctly. There is 120 V between neutral and either Hot wire. There should be 240 between the two hot wires. If this is what you are measuring and you are sure the breaker is 240 volts you should be able to measure 240 at the output of the breaker. If it isn't there your panel has a problem.


What is voltage across a 75 ohm resistor with 1.6 A current?

120v