Neutral Bonding or Circuit

The neutral is the center point of a Y configuration generator, which is also Earthed at the site. On transmission lines, neutral wires and cages surround the line phases as a safety feature. In theory, Neutral and Earth have the same (zero) potential. However, in practice, a few volts difference is often found, increasing as you get further away from the source. Sub stations may also Earth the neutral conductor. In Europe, the Neutral is a blue wire instead of black. 220 volt single phase, as found in your home, is measured between a line (phase) and neutral. 380 volt is found between two lines or phases.