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Is a common or Neutral wire needed for all 240 volt circuits Example will a 240 volt electric motor run without a Neutral wire?
Wiki User
∙ 14y ago
It all depends on the type of appliance!
Some 240 Volt appliances, such as some electric motors, DO need to have a Neutral wire. Some of these appliances have timers or other devices inside them which only require a 120 Volt power supply, hence they need a Neutral wire to get that.
Other appliances, for example some household electric clothes dryers, DO NOT have to use a neutral wire because they only have a very simple heating element connected just to the red and black "hot" legs of the supply. (One hot leg is actually 120 Volts above Neutral when the other leg is 120 Volts below Neutral. But remember, as this is alternating current, they both alternate 60 times a second, going from zero to +120V to zero to -120V and back to zero again.)
However a dryer should always have a Ground wire connected to its metal casing to protect users from possible electrocution and prevent a house fire. Such a ground wire helps ensure that the circuit breaker or fuse will cut off the power supply if a fault occurs within the appliance or its power outlet. (But that has nothing to do with "needing" a connection to a Neutral wire.)
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
Wiki User
∙ 14y ago
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You need a cell in the circuit because?
Assuming you are talking about electrical circuits: "Cell" is the name given for a battery. Without a cell in the circuit, there is no supply of electricity. Therefore there is no electric circuit.
How will a 3 phase rcd work with no neutral?
a traditional rcd wont work as it uses the difference between the incoming active and neutral to detect current loss it has to read 0. In particular, an RCD alone will not detect overload conditions, phase to neutral short circuits or phase to short circuits. Over-current protection must be provided.
What is the importance of a electric switch?
Electric switch is very important because as you known that all the equipment we are using is useless without a switch. For example, if someone want to turn on its computer, it have to first on the switch without switching on the power supply is not gone in the equipment we using.
What object is not an electrically neutral?
A object without electrical charges.
Why do you have 110 on one leg and nothing on the other in the panel box?
If this is a panel with 220v coming into it, then there is a big problem. The 100v circuits should be balanced, about half on one leg, and about half on the other leg. Without this balance, the incoming neutral wire will be carrying much more current than it was designed to carry.
Why do electric circuits need to use conductors?
Without conductors, electrons do not flow where you want them to flow. An electrical circuit is a flow of electrons.
Can an electric field exist without a magnetic field?
An electric field can exist even without the presence of a magnetic field. An example of this is a stationary electric field.
You need a cell in the circuit because?
Assuming you are talking about electrical circuits: "Cell" is the name given for a battery. Without a cell in the circuit, there is no supply of electricity. Therefore there is no electric circuit.
How will a 3 phase rcd work with no neutral?
a traditional rcd wont work as it uses the difference between the incoming active and neutral to detect current loss it has to read 0. In particular, an RCD alone will not detect overload conditions, phase to neutral short circuits or phase to short circuits. Over-current protection must be provided.
Where are circuits?
Circuits are used anywhere you want to have an electrical current flow. Without a circuit, you cannot have current flow. Without current flow, you cannot do any work.
What is neutral object?
The object without charge is called Neutral object.
Where are circuits used?
Circuits are used anywhere you want to have an electrical current flow. Without a circuit, you cannot have current flow. Without current flow, you cannot do any work.
What are normally open and close circuits?
The electric path which starts from the positive terminal of a cell or battery ends at its negative terminal, without any break, is called closed electric circuit or complete electric circuit. The electric path,which starts from the positive terminal of a cell or battery, is broken at some point, is called open electric circuit or incomplete electric circuit.
What is the importance of a electric switch?
Electric switch is very important because as you known that all the equipment we are using is useless without a switch. For example, if someone want to turn on its computer, it have to first on the switch without switching on the power supply is not gone in the equipment we using.
What does the term electrically neutral?
The meaning of electrically neutral is without any electrical charge.
An object without a charge is called?
neutral
What are the three basic features all electric circuits must have?
Three things that an electrical circuit must have to operate is, A) a source. Example- battery B) a line. Example- conducting wires that allow the electricity to pass through and C) a load. Example- A light bulb
