Forum Discussion
briansue
Dec 25, 2016Explorer
Hopefully readers of this forum know better than to believe what the read on the internet. Following I will Copy & Paste from Wikipedia some very basic electrical info about basic electrical wiring and why wires are colored. This does not mean you should believe everything you read on Wikipedia either. But this comes from the National Electrical Code (NEC). Some readers may not understand this. If you do not understand this please do not ever attempt any wiring on your own. If someone tries to tell you anything other than what is written here they simply do not know what they are talking about. To clarify – if you read and understand this you will realize that connecting a HOT wire to NEUTRAL can put power to your GROUND and you will have serious problems. These are not my words. If you are going to attempt wiring and you do not understand this completely then you need to hire someone to do your wiring for you. You will find some very bad advice on this forum - and some very bad wiring in Mexico - but if you want to stay alive you will read and understand this - do not break rules when it comes to electricity.
https://en.wikipedia.org/wiki/Ground_and_neutral
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.
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. (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.
Neutral is a circuit conductor that normally carries current back to the source, and is connected to ground (earth) at the main electrical panel.
In the electrical trade, the conductor of a 2-wire circuit connected to the supply neutral point and earth ground is referred to as the "neutral".
All neutral wires of the same earthed (grounded) electrical system should have the same electrical potential, because they are all connected through the system ground. Neutral conductors are usually insulated for the same voltage as the line conductors, with interesting exceptions.
https://en.wikipedia.org/wiki/Electrical_wiring_in_North_America
Although much of the electrician's field terminology matches that of the electrical codes, usages can vary.
Neutral wire is the return conductor of a circuit; in building wiring systems, the neutral wire is connected to earth ground at least at one point. North American standards state that the neutral is neither switched nor fused except in very narrowly defined circumstances.
The United States electrical codes require that the neutral be connected to earth at the “service panel” only and at no other point within the building wiring system. Formally, the neutral is called the “grounded conductor”; as of the 2008 NEC, the terms “neutral conductor” and “neutral point” have been defined in the Code to record what had been common usage.
Hot is any conductor (wire or otherwise) connected with an electrical system that has electric potential relative to electrical ground or neutral. Electrical codes use the term "ungrounded."
Grounding is a normally non-current carrying conductor with a low impedance path to earth. It is often called the "ground wire," or safety ground. It is either bare or has green insulation.
Leg as in “hot leg” refers to one of multiple hot conductors in an electrical system. The most common residential and small commercial service in Canada and the U.S., single split-phase, 240 V, features a neutral and two hot legs, 240 V to each other, and 120 V each to the neutral.
Phase wire in a circuit may be black, red, orange (high leg delta) insulated wire, sometimes other colors, but never green, gray, or white (whether these are solid colors or stripes). Specific exceptions apply, such as a cable running to a switch and back (known as a traveler) where the white wire will be the hot wire feeding that switch. Another is for a cable used to feed an outlet for 250 VAC 15 or 20 amp appliances that do not need a neutral, there the white is hot (but should be identified as being hot, usually with black tape inside junction boxes).
The neutral wire is identified by gray or white insulated wire, perhaps using stripes or markings.
Grounding wire of circuit may be bare or identified insulated wire of green or having green stripes. All metallic systems in a building are to be bonded to the building grounding system, such as water, natural gas, HVAC piping, and others.
Larger wires are furnished only in black; these may be properly identified with suitable paint or tape.
In type NM cable, conductor insulation is color-coded for identification, typically one black, one white, and a bare grounding conductor. The National Electrical Code (NEC) specifies that the black conductor represent the hot conductor, with significant voltage to earth ground; the white conductor represent the identified or neutral conductor, near ground potential; and the bare/green conductor, the safety grounding conductor not normally used to carry circuit current.
https://en.wikipedia.org/wiki/Ground_and_neutral
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.
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. (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.
Neutral is a circuit conductor that normally carries current back to the source, and is connected to ground (earth) at the main electrical panel.
In the electrical trade, the conductor of a 2-wire circuit connected to the supply neutral point and earth ground is referred to as the "neutral".
All neutral wires of the same earthed (grounded) electrical system should have the same electrical potential, because they are all connected through the system ground. Neutral conductors are usually insulated for the same voltage as the line conductors, with interesting exceptions.
https://en.wikipedia.org/wiki/Electrical_wiring_in_North_America
Although much of the electrician's field terminology matches that of the electrical codes, usages can vary.
Neutral wire is the return conductor of a circuit; in building wiring systems, the neutral wire is connected to earth ground at least at one point. North American standards state that the neutral is neither switched nor fused except in very narrowly defined circumstances.
The United States electrical codes require that the neutral be connected to earth at the “service panel” only and at no other point within the building wiring system. Formally, the neutral is called the “grounded conductor”; as of the 2008 NEC, the terms “neutral conductor” and “neutral point” have been defined in the Code to record what had been common usage.
Hot is any conductor (wire or otherwise) connected with an electrical system that has electric potential relative to electrical ground or neutral. Electrical codes use the term "ungrounded."
Grounding is a normally non-current carrying conductor with a low impedance path to earth. It is often called the "ground wire," or safety ground. It is either bare or has green insulation.
Leg as in “hot leg” refers to one of multiple hot conductors in an electrical system. The most common residential and small commercial service in Canada and the U.S., single split-phase, 240 V, features a neutral and two hot legs, 240 V to each other, and 120 V each to the neutral.
Phase wire in a circuit may be black, red, orange (high leg delta) insulated wire, sometimes other colors, but never green, gray, or white (whether these are solid colors or stripes). Specific exceptions apply, such as a cable running to a switch and back (known as a traveler) where the white wire will be the hot wire feeding that switch. Another is for a cable used to feed an outlet for 250 VAC 15 or 20 amp appliances that do not need a neutral, there the white is hot (but should be identified as being hot, usually with black tape inside junction boxes).
The neutral wire is identified by gray or white insulated wire, perhaps using stripes or markings.
Grounding wire of circuit may be bare or identified insulated wire of green or having green stripes. All metallic systems in a building are to be bonded to the building grounding system, such as water, natural gas, HVAC piping, and others.
Larger wires are furnished only in black; these may be properly identified with suitable paint or tape.
In type NM cable, conductor insulation is color-coded for identification, typically one black, one white, and a bare grounding conductor. The National Electrical Code (NEC) specifies that the black conductor represent the hot conductor, with significant voltage to earth ground; the white conductor represent the identified or neutral conductor, near ground potential; and the bare/green conductor, the safety grounding conductor not normally used to carry circuit current.
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