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It is not so much the voltage that has to be watched but the amperage. On a split phase secondary 120/240 volts or a neutral of a three phase wye connection 120/208 volts the neutral carries the unbalanced current from the connected loads.
To keep this unbalanced current down to a minimum the load breakers have to be shifted around in the distribution panel. The object is to balance the connected loads so that the neutral will carry minimum load. Depending on where in the distribution panel the breakers are positioned will result in what the current on the panels neutral will draw.
The general procedure for electricians is to place a clamp on amp meter on the distribution panels neutral and write down what the amperage draw is on a fully loaded distribution panel.
Then take readings on the individual loads of the circuit amperages and mark them down on a piece of paper.
Once all of the loads have been read try and put the closest load amperages across from one another.
Once all of the balancing has been done use the amp meter on the panels main neutral conductor and see how much lower the reading is now as to what it was at the beginning of the exercise.
This is known in the electrical trade as balancing the distribution panel.
With this in mind the electrical code book allows for the use of reduced neutral conductor sizing as compared to the size needed for the main feeder conductors. This in turn reduces the installation costs of a service distribution system
On reduced neutral distributions, this is why the amperage is to be kept to the lowest possible rating so as not to overload the smaller conductor size used for the distribution's neutral.
What else can I help you with?
What is the relationship between the voltage output at the interface and the voltage across the series and parallel circuit?
Ohm's law states that the current in a circuit is inversely proportional to the circuit resistance. There is a single path for current in a series circuit. The amount of current is determined by the total resistance of the circuit and the applied voltage.
What happens if a circuit has no resistance?
Then the voltage in will equal the voltage out. The purpose of a resistor is to reduce the amount of electrical flow of current. You 'short out' the supply and blow a fuse/circuit breaker.
What measures the volume of electrons through a circuit?
Current measures the flow of electrons through a circuit and voltage basically measure the amount of available electrons.
The relationship for current and voltage in a series circuit?
current is the rate of flow of charge: colombs per second or amps voltage is the amount of energy in one colomb of charge: volt or jouls per colomb voltage times current is the power.
What is the phase shift between voltage and current when an capacitance is connected to the circuit?
The amount of phase shift depends on the resistance that is also present in the system. In an ideal situation, the phase shift would be +90 degrees, but that would require a voltage source with zero resistance, conductors with zero resistance, and an ideal capacitor that exhibited only capacitance.
The amount of current in a circuit can what by increasing the amount of resistance present in the circuit?
No it cant. Voltage = Current x Resistance. So at constant Voltage if the Resistance is increased, Current will reduce
What is the relationship between the voltage output at the interface and the voltage across the series and parallel circuit?
Ohm's law states that the current in a circuit is inversely proportional to the circuit resistance. There is a single path for current in a series circuit. The amount of current is determined by the total resistance of the circuit and the applied voltage.
How does a resistor limit current or voltage in an electrical circuit?
A resistor limits current in an electrical circuit by impeding the flow of electrons, which reduces the amount of current passing through it. This, in turn, helps regulate the voltage in the circuit by creating a drop in voltage across the resistor.
Do parts of a series circuit have the same amount of volts?
No. Parts of a series circuit have the same amount of current, but not necessarily the same amount of voltage.
How do resistors lower voltage in an electrical circuit?
Resistors lower voltage in an electrical circuit by impeding the flow of electric current, which causes a drop in voltage across the resistor. This drop in voltage helps regulate the overall voltage in the circuit and control the amount of current flowing through it.
How do resistors reduce voltage in an electrical circuit?
Resistors reduce voltage in an electrical circuit by impeding the flow of electric current, which causes a drop in voltage across the resistor. This drop in voltage is proportional to the amount of resistance in the circuit.
Which component slow down the current in circuit?
An inductive load can cause current to lag voltage in an AC circuit. An increase in resistance will decrease amount of current flow.
What is external resistance?
External voltage is the ration when there is an increase in current and voltage. If you apply voltage to the outside of a circuit and need to figure out the amount of current flow, that would be the external resistance.
According to Ohm's law what are the two variables that affect the amount of current in a circuit?
According to Ohm's Law, the two variables that affect the amount of current in a circuit are voltage (V) and resistance (R). The current (I) flowing through a circuit is directly proportional to the voltage applied across it and inversely proportional to the resistance in the circuit.
What is the point of a resistor in an electrical circuit?
A resistor in an electrical circuit is used to control the flow of electric current and reduce the amount of voltage in the circuit. It helps regulate the amount of current that flows through the circuit and protects other components from damage due to excessive current.
How does voltage drop work in an electrical circuit?
Voltage drop in an electrical circuit occurs when there is resistance in the circuit, causing a decrease in voltage as the current flows through the components. This drop in voltage is proportional to the amount of resistance in the circuit, following Ohm's Law (V I R).
What happens if a circuit has no resistance?
Then the voltage in will equal the voltage out. The purpose of a resistor is to reduce the amount of electrical flow of current. You 'short out' the supply and blow a fuse/circuit breaker.
