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The general rule with respect to the disconnecting means states that a grounding connection shall not be made to any grounded circuit on the -- side?
Wiki User
∙ 14y ago
on the line side.
Wiki User
∙ 14y ago
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What is the purpose of grounding electrical equipment?
It is a safety measure for devices that have a metal case where a failure in the device could cause the case to be connected to the hot side of the circuit. By grounding the case the breaker will trip instead of you getting a shock.
What is the role of a neutral wire?
The real purpose of neutral is grounding. In order for electricity to flow you need a direct continuous link from the supply to a ground. Without the neutral electricity wouldn't be able to flow because it wouldn't have a ground (a place to go). The real name for neutral is the grounded conductor, and what is commonly referred to as ground is really the grounding conductor. The grounding conductor exists for the sole purpose of being a back up neutral in case something happens, this way you don't BECOME the ground if you touch it. But don't think that means you can go touching wires if you don't know what your doing cause you can still get hurt even with both grounded and grounding hooked up.
If a dryer has a green ground wire that was connected to the green wire on the 4 prong cord what do you do with the green wire now that you have a 3 prong cord?
In a nutshell, you need to connect your green grounding wire to the white grounded conductor (that originates in your existing 3-wire dryer receptacle that does not have a green grounding conductor).My answer assumes that you are in the United States. If not, the information below may not apply. In 1996, the U.S. National Electrical Code implemented a new rule that no longer allowed the grounded circuit conductor (white neutral wire) to serve as the grounding conductor (green wire) for many household appliances. New installations of ranges and clothes dryers must have a separate green or bare grounding conductor.Now, there is an exception for existing installations. I have put BOLD emphasis on parts that may apply to your question. The text in brackets [ ] is not part of the NEC but explanations added by me.NEC Article 250.140 Exception: For existing branch circuit installations only where an equipment grounding conductor [green wire] is not present in the outlet or junction box, the frames of electric ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, and outlet or junction boxes that are part of the circuit for these appliances shall be permittedto be connected to the grounded circuit conductor [white neutral wire] if all the following conditions are met.(1) The supply circuit is 120/240-volt single-phase, 3-wire; or 208Y/120-volt derived from a 3-phase, 4-wire, wye-connected system.(2) The grounded conductor is not smaller than 10 AWG copper or 8 AWG aluminum.(3) The grounded conductor [white wire] is insulated, or the grounded conductor is uninsulated and part of a Type SE service-entrance cable and the branch circuit originates at the service equipment.(4) Grounding contacts of receptacles furnished as part of the equipment are bonded to the equipment [any built-in receptacles on your dryer have a ground connection (green wire) to the metal frame of the dryer].In summary, you need to connect your green grounding wire to the white grounded conductor of your existing 3-wire receptacle, provided you meet all 4 of the above conditions.
What is the definition of grounding as in electricity?
It is where a point in a circuit is at zero voltage.
What is a grounded conductor used for and what color is it required to be by NFPA 70 the national electric code?
A grounding conductor is a means for providing safety for users of electrical devices that may have experienced an internal failure that causes an electrical short to metallic surfaces. In theory, such a short to a GROUNDED surface would quickly result in overcurrent or ground-fault interruption of the circuit, resulting in an dead but safe circuit. NEVER "reset" a GFCI while holding the attached device or without discovering what caused it to trip. Were it not for a grounding conductor, the user could become the "grounding conductor" by accident, causing electrocution. Grounding conductors maybe bare (copper) wires or have green insulation, or green with a yellow stripe (also used for bonding) or other green markings (green screws, green clips, green wire nuts, etc). Grounded appliance plugs were not required in the NEC until the 1960s.
How can you get a short circuit?
the connection is to grounded
What is the definition of the connection between the grounded circuit and the equipment grounding conductor at the service?
2008 NEC - Article 100 Definitions - Bonding Jumper, Main Main Bonding Jumper is the answer.
What is the difference between a phase to ground connection and a grounded wye connection?
A 'grounded-wye' connection describes a wye-connected supply, whose star-point (or common point) is grounded. This is essential in order to ensure stable phase voltages. I'm not sure what you mean by a 'grounded-phase' connection; if you mean a 'grounded-line' connection, then this is a short-circuit to ground from a line conductor.
What is the connection between any electrical circuit and the earth is called?
Electrical circuits are grounded to the earth.
What is a grounded electrical circuit?
we use grounded electrical circuit to prevent high voltage from any type of electrical source. with the help of grounded electrical circuit we by pass the high voltage to the ground. in common language we call it earthing.
What does grounded mean as it relates to static electricity?
Grounded, with any electrical circuit, means there is a firm connection to earth, to prevent danger of electric shock or arc discharge.
Will a ceiling fan work if it's not grounded?
Yes, the grounding of equipment is for safety reasons not operational reasons. By grounding equipment, the conductor, if the equipment develops a short circuit to ground, supplies a low impedance return to the distribution panel where is is sensed by the circuits breaker. Once the breaker senses this short circuit current it will trip the circuit open.
Where the ground wire located?
The grounded conductor is usually covered in white or light gray insulation. The grounded conductor is connected to the grounding conductor at one and only one point, usually near the transformer or in the circuit breaker panel.
What is the difference between a Grounded conductor and a Grounding conductor?
In residential 120 VAC, single-phase electrical wiring, there are three main types of electrical wires: 1. Ungrounded conductor (Hot, and sometimes called "Line" or "Phase") 2. Grounded conductor (Neutral), and 3. Grounding conductor (Safety Ground or Protective Earth) The groundED conductor is the power return, intended as a current return path from the load back to the source to complete the "circuit." Its insulation is White, gray or a non-green color with white stripes. The National Electric Code requires it be connected to earth ("groundED ") at the service entrance and usually only there. The groundING conductor is usually the safety ground which serves as an emergency current return path in the event of a circuit fault or overvoltage. Like the groundED conductor, it too is grounded at the service entrance, but is also connected to metal surfaces and parts along the circuit, groundING them. It conducts current only if the current "seeks" to return to the service entrance along a path other than the Neutral (like through your chest, should a Hot wire becomes loose and contact metal in the circuit that you may touch). Since the grounding conductor doesn't normally carry current, its cross-section is sometimes smaller than the groundED conductor's. The grounding conductor's insulation is green (no other conductors can have green insulation) though sometimes it is bare copper. Sometimes the steel metal conduit enclosing the Hot and Neutral acts as the grounding conductor.
What is the purpose of grounding electrical equipment?
It is a safety measure for devices that have a metal case where a failure in the device could cause the case to be connected to the hot side of the circuit. By grounding the case the breaker will trip instead of you getting a shock.
What is it called when wires connect accidentally?
If two ungrounded (hot) conductors touch or an ungrounded and a grounded (neutral) conductor accidentally touch, it is called a short or short circuit. If an ungrounded or a grounded conductor touch an equipment grounding conductor, it is called a ground fault.
What is a conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes?
The conductor used to connect equipment or circuit to an earth electrode is earth bond or in some cases a supplementary bond. This will be generally carried out using a copper tape or an earth cable.
