<P> As the neutral point of an electrical supply system is often connected to earth ground, ground and neutral are closely related . Under certain conditions, a conductor used to connect to a system neutral is also used for grounding (earthing) of equipment and structures . Current carried on a grounding conductor can result in objectionable or dangerous voltages appearing on equipment enclosures, so the installation of grounding conductors and neutral conductors is carefully defined in electrical regulations . Where a neutral conductor is used also to connect equipment enclosures to earth, care must be taken that the neutral conductor never rises to a high voltage with respect to local ground . </P> <P> Ground or earth in a mains (AC power) electrical wiring system is a conductor that provides a low - impedance path to the earth to prevent hazardous voltages from appearing on equipment (high voltage spikes). (The terms "ground" and "earth" are used synonymously here . "Ground" is more common in North American English, and "earth" is more common in British English .) Under normal conditions, a grounding conductor does not carry current . Grounding is an integral path for home wiring also because it causes circuit breakers to trip more quickly (ie, GFI), which is safer . Adding new grounds requires a qualified electrician with information particular to a power company distribution region . </P>

What is the neutral for in electrical wiring
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