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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?
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.
What else can I help you with?
What is the need for neutral wires in circuits for electrical services?
The neutral provides a path back to the source for the electricity. In a three-phase circuit, it is mainly used to carry the unbalanced load back to the source. In theory, a perfectly-balanced three-phase circuit would not need a neutral, but this is almost impossible to achieve in actual practice.
Can a 240 circuit with red black white and bare ground be changed into two separate 120 volt circuits using the same neutral white wire for both 120 volt circuits?
Yes but it is not compliant with the NEC you can use a 240 volt circuit, (Ground, Hot, Hot) you would use a (either) hot wire with a ground wire and that will be a 120 volt circuit. I strongly advise you not to do this though because a ground wire is not trully meant to carry current and it will not be approved by any inspector.
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 poduction of a electric or magnetic state by the proximity without contact of an eletricified or magnetized body?
The phenomenon where an electric or magnetic state is induced in a nearby object without direct contact is known as induction. In the case of electric induction, a charged object can cause the redistribution of charges within a neutral conductor, leading to polarization. Similarly, magnetic induction occurs when a magnetic field from a magnet influences nearby materials, inducing magnetism in them. Both processes demonstrate the ability of electric and magnetic fields to affect other bodies at a distance.
What is the function of amp in an electric circuit?
In an electric circuit, the ampere (amp) measures the flow of electric current, indicating how many electrons are passing through a conductor per second. It quantifies the rate at which electrical charge is transferred, influencing how much power is delivered to devices. Higher amperage can indicate greater energy consumption, which is crucial for designing circuits that can safely handle the intended load without overheating or failing.
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.
How uesful are the electric circuits in a daily life?
Electric circuits are fundamental to daily life as they power nearly all modern devices, from household appliances and lighting to computers and smartphones. They enable the functioning of essential services like heating, cooling, and communication systems. Furthermore, electric circuits facilitate innovations in various fields, enhancing convenience, efficiency, and connectivity. Without them, many of the conveniences we take for granted would not be possible.
What are continuous circuits?
Continuous circuits are electrical circuits that provide a continuous path for current to flow without interruption. They consist of interconnected components such as resistors, capacitors, and power sources, allowing for the steady movement of electric charge. In a continuous circuit, the flow of electricity is maintained as long as the circuit is closed and the power source is active. This contrasts with open circuits, where the flow of current is disrupted.
What is n example of a neutral cleaner?
A neutral cleaner is a type of cleaning product that is pH-balanced and safe for various surfaces. An example of a neutral cleaner is a mild dish soap mixed with water, which can be used to clean countertops, floors, and other household surfaces without causing damage.
What is the need for neutral wires in circuits for electrical services?
The neutral provides a path back to the source for the electricity. In a three-phase circuit, it is mainly used to carry the unbalanced load back to the source. In theory, a perfectly-balanced three-phase circuit would not need a neutral, but this is almost impossible to achieve in actual practice.
Can an electric field exist without a magnetic field?
Yes, an electric field can exist without a magnetic field. Electric fields are produced by electric charges, while magnetic fields are produced by moving electric charges. So, in situations where there are stationary charges or no current flow, only an electric field is present.
An object without a charge is called?
An object without a charge is called electrically neutral.
What is electric protential?
Electric potential, often denoted as voltage, is the amount of electric potential energy per unit charge at a specific point in an electric field. It represents the work done to move a positive test charge from a reference point, typically infinity, to that point without any acceleration. Measured in volts (V), electric potential helps determine the direction of current flow in circuits and the behavior of charged particles in an electric field.
What is an example of a non electromagnet?
A permanent magnet, like a refrigerator magnet, is an example of a non-electromagnet. It produces a magnetic field without the need for an electric current.
What is a example of a neutral object?
A rock can be considered a neutral object as it typically does not carry any positive or negative connotations or emotions. It is simply a natural physical entity without any inherent value judgment attached to it.
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.
