What is shared neutral?
Shared neutral in electrical circuits is a common connection for neutral chaars, which usually carry almost zero clean current. In the case of a three -phase circuit, the neutral line current is zero or very minimal for a balanced three -phase load. For electricity with a split phase, if there are balanced loads on each of the two phases, there is almost no clear current on a common neutral wire. Shared neutral wire is also called a common neutral conductor and this arrangement is known as Edison Circuit.
Although the current in shared neutral can be almost zero when the load is balanced, it is important to use copper cables that can carry currents during the load imbalance. A similar situation happens with balanced three -phase loads if the current is interrupted from one of the phases. This condition can be experienced if there is an unexpected open circuit at one of the three -phase loads.
In terms of distribution costs, it is more expensive to operate a single -phase connection. In single -phase cablingHot and neutral will be required to provide the same capacity of the current. For example, due to a load of 1,000 W) (W), 100 V) must run about 10 amps (a). If the electrical lines of the split phase provide double energy, the amount of cables needed increases only by 50% and not 100%, as the split-phase cabling will use shared neutral that will share the same neutral wire to two hot wires that provide voltages outside each other. Back currents on the neutral are canceled when each hot phase feeds the same current to the load.
A typical three -phase engine will require five wires. It is the connection of the country, the neutral connection and the connection of the first, second and third phases that are "hot" or live. The Earth's connection can only have the overwhelming stream during the standard, or at the time of lightning. It is possible that overvoltage currents can be produced by three -phase lines caused by electromagnetic pulses from the flash.
If there are two three -phase engines withBound with a three -phase line, a neutral line can be shared neutral between two engines. Under normal conditions, there will be no current in the neutral wire. The circuit breakers of the circuit are ganging three -phase circuit breakers, so any exaggerated at least one phase stumbles and disconnects all phases from the engine. This results in a mechanism to prevent neutral current growth above several billion.