Common is a term used to describe a connection that is paired with more than one circuit such as a center tap on a transformer. When the loads of the common circuits are not balanced, neutral caries the difference between the two circuits. Ground is a circuit connected to the earth most often through a ground rod.Click to see full answer. In respect to this, what is the difference between ground and neutral?Ground refers to the physical ground or earth. Neutral refers to the star point of a STAR connected load. This does not apply to DELTA connected loads. Kirchhoff’s current law says that in any three phase STAR connected system any imbalance in current or voltage is carried by/in the neutral.Likewise, why is there a ground and neutral? It can be stated that Neutral can be grounded, but Ground is not neutral. A Neutral represents a reference point within an electrical distribution system. A Ground represents an electrical path, normally designed to carry fault current when a insulation breakdown occurs within electrical equipment. Moreover, is it OK to use ground as neutral? Yes, the ground wire will function as a neutral wire and the ground wire and neutral wire are bonded together at the panelboard. So since the ground and neutral wires are essentially the same and bonded together, why would you not use the ground wire as a neutral? Because it causes the potential for electrical shock.What is common wire mean?Generally a neutral wire is in an electrical system of a building and is tied the ground wire at the transformer. A common wire is a more general term and simply refers to the 0 Volt wire of a circuit, either electrical or electronic.