The neutral wire serves as common return to all the three phases acting outward from n 1. A shared neutral is a connection in which a plurality of circuits use the same neutral connection.
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Shared neutral wiring diagram. Therefore the total neutral current is the vector sum of the three line currents. These can often be found in older properties where the stairway light is connected to line from the. In the above diagram the alternator is connected to the load by three phase four wire system. A shared neutral circuit uses 3 conductor nm b wire to join two adjacent circuit breakers in the panel to a junction box near the branch circuit loadsoutlets see figure 2. Shared or borrowed neutrals which are unwanted interconnections between two circuits. This photo is an example of a multiwire branch circuit preferred wiring diagram.
I show and explain a shared neutral 2 separate circuits wiring a outlet 2 circuits in 1 outlet duration. In a 3 phase system it is legal in some jurisdictions to share a single neutral wire between all three 3 phases. Multiwire branch circuits can offer fewer conductors reduce the raceway size and reduce voltage drop. Why are multiwire branch circuits used. David berquist 688 views. The neutral points in both alternator and the load are joined together.
The use of shared neutral circuits produces significant copper savings when two branch circuits are close to each other but far from the circuit breaker panel. This is also known as a common neutral and the circuits and neutral together are sometimes referred to as an edison circuit. This photo is an example of a multiwire branch circuit incorrect wiring diagram.
Gallery of Shared Neutral Wiring Diagram
