What is the Purpose of Neutral link in a electrical circuit??

Question

Example: motor circuit

Answer 1

The neutral in an electrical circuit is the return line that completes the circuit.

It carrys the "spent" electrons after the load or resistance.

Answer 2

can be used to establish a 'zero' reference voltage to compare other line voltages with

Answer 3

You need to have a complete circuit in electronics (as opposed to light which is only transmitted and not returned) and the neutral completes the circuit by returning the current to the source.

Answer 4

It is normal for a neutral connection to be made all of the time i.e. it is not switched by any switches, relays etc because it is effectively at earth potential and so poses no risk.

The reason for the link is so that it can be removed for testing etc. It is not possible to do an insulation resistance test if the neutral is connected.

Answer 5

Its the preferred return path for the supplied power.