Line Neutral Ground
There is also a ground rod connected to the neutral at the transformer.
Line neutral ground. The reason for the ground connection has to do with the needs of your local utility company and a need to remove stray harmonics and other forms of objectionable current. Under certain conditions a conductor used to connect to a system neutral is also used for grounding earthing of equipment and structures. In the international electrical code iec they call a ground wire a protective earth or pe. In the u s standard line voltage wiring is wrapped in plastic sheathed cables and usually has three conductors.
Line 1 to neutral and line 2 to neutral are used to power loads of 120 volts of lighting and electrical outlets. This is a safety feature in case the hot or neutral wires somehow come in contact with metal parts. The neutral wire forms a part of the live circuit along with the hot wire. The third conductor is bare copper.
Current carried on a grounding conductor can result in objectionable or dangerous voltages appearing on equipment enclosures. It s purpose is to dissipate static electricity and high external voltages like lightening strikes. The other is white. Connecting the metal parts to earth ground eliminates.
Grounding is exactly what the name says. Connection of a device equipment with a ground in order to pass the current to the ground in order to prevent an electric shock that is to protect the people as well as the device itself. The neutral line system grounding which comes with single three phase electrical systems windings of the transformers or generators and to be connected as directly as possible to the grid or grounding electrode and be routed separately from equipment grounding connections. Line 1 to line 2 is used to feed 240 volt single phase loads such as a water heater or an air conditioner.
There may be others reasons too but the magnitude of this current is in fraction of phase current and in few case it can be even double of phase current. As the neutral point of an electrical supply system is often connected to earth ground ground and neutral are closely related. This cable is called nmb cable. The black wire is the hot wire.
This neutral wire is given to ground by grounding to make the second terminal of neutral wire at zero potential. Hot neutral ground wires. This rod is not used for ground faults. So neutral wire is always assumed to be charged in active circuit.
Two of the conductors in nmb cable are covered with plastic insulation one is black. Generally the neutral serves as a balancing line for a three phase system. The neutral is called a neutral or n.