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There are only 3 phases that come into house main fuse box so where does ground and neutral come from?
It is very rare to have three-phase electricity coming into a residence. One of the wires is probably the neutral (It will be white or black with white stripes.) The ground comes in from a ground rod near the main, and connects to the ground coming from the meter, AND (If the main fuse box is the first disconnecting means,) the neutral and ground bars have to be bonded together in the box.
What else can I help you with?
If you need 220v 3-phase power how many wires are required coming in from the transformer or power pole and what are the voltages or potential purposes of each wire load 110v load 220v neutral ground?
In 120/208V 3 phase system you have 5 wires: three hots, one neutral, and one ground. You have 208V between any two hots and 120V between any hot and neutral. The neutral is the same as in a single phase system. Clarification: Only 4 wires maximum come from the pole - 3 phases and a neutral, and then only if the transformers are on the pole. The ground is always locally derived from a ground rod(s) and/or cold water pipe ground. Most of the time, only 3 wires come in from the pole - the 3 phases in a Delta configuration (Delta has no neutral). The neutral is then derived from a local transformer connected in a Delta-Wye setup. The neutral is the center connection in the Wye. So, from the utility feeder to the transformer - 3 wires. From the transformer (wherever it is located) to the building service entrance panel - 4 wires. The ground is connected at the service entrance panel, and from there to the rest of the building you would have all 5 wires. Clear? In the US, 208/120 is a standardized mains voltage, but in some parts of the world, the phase-to-phase voltage is 220. In that case, the phase-to-neutral potential (in a 3-phase system) would be 127 Volts, not 120.
What is the difference between ground and floating neutral in your electric panel?
Neutral is vital to complete the cicuit. Ground is vital to carry the current to earth during a malfuntion of the appliance using power to drive it, should the current come in contact with the frame or outer covering of the appliance and endangering the users life.
Why is the function of neutral wire?
The neutral wire is simply a grounded power carrying conductor. It is different than earth ground, which is a protective ground, that is not intended to carry current, however, earth ground and neutral are connected together at the distribution panel. Nevertheless, they serve different purposes, and may not be interchanged in usage. The purpose in grounding one of the power carrying conductors is to limit the possible voltage potential that might exist between an ungrounded conductor, such as hot, or phase hot, so as to minimize the potential electrocution hazard that might exist if someone were to come into conduct with a hot conductor.
How is sugar cane extracted out of the ground?
Sugar cane is a plant and the sugar is boiled out of the plant. It does not come from the ground.
Fuses do not protect against what a. short circuits b. overloading c. lightning surges d. large ground faults?
== d. large ground faults. This is kinda tricky, but let's give it a shot. Do fuses protect against a short circuit? Yep. A short circuit creates a low resistance path in the electrical route(s) inside the unit. Lower (like almost zero in a short) resistance means more current and the fuse opens. How about overloading? An overload is, in general, a drawing of more current than is "normal" and that will burn the fuse open, regardless of the cause. Yes, the fuse provides protection. In a lightning surge, high voltage appears on the power buss and "punches through" to anywhere it feels like going. The voltage transient will easily knock the fuse open. Additional damage could result because appliances are not designed to withstand thousands of volts on the input, but the fuse has opened and made things safe. Let's look at the last one, the large ground fault. Here's a quickie review. A ground wire "grounds" an appliance to earth ground. That leaves the hot and neutral wires to provide power to an appliance in a standard 115 volt AC application. (The hot side is fused, by the way.) In an AC circuit, the current changes direction, but let's skip past that and look at the hot and neutral. Let's say the hot is the "supply side" and the neutral is the "return" and run with that. Here's another point of fact. Inside the power panel the neutral and ground have a common connection. They're at the same potential. For an appliance, power would normally "come in" on the hot side and "go out" on the neutral side, but if there is something wrong with the neutral wire, the power could "go out" on the ground leg instead of the neutral. This idea is at the heart of ground fault interruption (gfi). A 3-wire circuit (hot, neutral and ground) could operate normally if the neutral is open and there is no gfi. That means the kitchen microwave could work with a broken neutral (if there was no gfi protection). A fuse would not "protect" against the ground leg carrying the current the neutral leg would normally carry. The appliance could operate normally without anyone being the wiser. (Apologies for the long winded explanation.)AnswerFuses are overcurrent protection devices and, therefore, protect circuits against overload currents and short circuits (including ground faults, as they are classified as short circuits to ground). They do not, however, protect against overvoltages due to lightning strikes, etc. Whilst it is true that an overvoltage most certainly will 'punch through' insulation resistance, by the time the fuse has operated due to any resulting overcurrent, the damage has already been done (to the insulation)!So the answer to your question is (c) lightning surges.
What are the two leads that come from the power house?
Active and Neutral
If you need 220v 3-phase power how many wires are required coming in from the transformer or power pole and what are the voltages or potential purposes of each wire load 110v load 220v neutral ground?
In 120/208V 3 phase system you have 5 wires: three hots, one neutral, and one ground. You have 208V between any two hots and 120V between any hot and neutral. The neutral is the same as in a single phase system. Clarification: Only 4 wires maximum come from the pole - 3 phases and a neutral, and then only if the transformers are on the pole. The ground is always locally derived from a ground rod(s) and/or cold water pipe ground. Most of the time, only 3 wires come in from the pole - the 3 phases in a Delta configuration (Delta has no neutral). The neutral is then derived from a local transformer connected in a Delta-Wye setup. The neutral is the center connection in the Wye. So, from the utility feeder to the transformer - 3 wires. From the transformer (wherever it is located) to the building service entrance panel - 4 wires. The ground is connected at the service entrance panel, and from there to the rest of the building you would have all 5 wires. Clear? In the US, 208/120 is a standardized mains voltage, but in some parts of the world, the phase-to-phase voltage is 220. In that case, the phase-to-neutral potential (in a 3-phase system) would be 127 Volts, not 120.
Is soda neutral or acidic or basic?
yes because it come from under the ground called synies
Why neutral to ground voltage is 0v sometime 120 v in same connection?
When the neutral is connected to the ground they are at the same potential which is zero volts. If the neutral gets disconnected from the ground then a potential of 120 volts will be measured from the open neutral to ground. This voltage is being measured from the neutral side of the load that is on the circuit. because they are actually the same cable at sub station, but split by the time they come to the board, long answer involved but that's the jist of it!
In a home circuit are the neutral and ground bare wires always connected?
They are always connected, but at one and only one place, the service entrance. For instance, if you are adding a subpanel to an existing house, the subpanel will probably come with the ground bus and the neutral bus tied together with a special bonding screw. To be legal, you must remove this screw, isolating the neutral from ground. The house's main panel still has the bonding screw or jumper in place, and remains the only place the connection is made.
Why neutral wire doesn't give electric shock?
The neutral wire doesn't give an electric shock because it is the same potential as ground. That being said if you come in contact with the "hot" wire and the neutral or ground wire, you become the load and will receive a substantial shock.
Can you connect a ground to a neutral bar?
In any distribution panel there are individual bars for each termination. The ground buss is in direct contact with the metal enclosure. The neutral is isolated from the metal enclosure. The only place where the two come into contact with each other is where a bonding screw protrudes through the neutral bar and into the metal enclosure.
Why is it that when you touch the neutral in a box that is not connect to the panel cause the test light to come when touching the power wire?
It shouldn't. The open end of a non connected neutral should have the same potential as the voltage feeding the circuit. The only time a voltage will show is when the return neutral is tested with a meter to the neutral bar or the ground return bar. It will then show what the supply voltage to the connected load is. Once this neutral is connected to the neutral bar there will be no voltage shown across the test meter between the neutral and the neutral bar or the ground bar.
If live is kept open could it trip circuit breaker by connecting neutral to ground?
Yes, keeping a live wire open can potentially trip a circuit breaker if the neutral and ground are connected. This can create a potential difference between neutral and ground, leading to a fault current that may trip the breaker. It is unsafe to have a live wire left open and in contact with other conductors.
Where can electricity come from?
electricity often comes from the ground or it can come from the air which than preduces green house gass emitions
What to write on a house ground breaking card?
May this house be a safe shelter and a happy home for many, many years to come.
Where did the length of the month come from?
the phases of the moon
