0
Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
In a series circuit the is the same at every point?
In a series circuit, components (such as resistors, bulbs, or other devices) are connected end-to-end so that there is only one path for the current to flow. Because there is only one pathway for the current, the same current passes through each component in the circuit.
This principle is derived from the conservation of electric charge. Since charge cannot accumulate or disappear in a closed circuit, the current that enters a component must be equal to the current that exits that component. In other words, the flow of current is continuous and consistent throughout the series circuit.
Mathematically, this can be expressed as:
I_total = I_1 = I_2 = I_3 = ... = I_n
Where:
I_total is the total current entering the series circuit.
I_1, I_2, I_3, ..., I_n are the currents through each individual component in the circuit.
It's important to note that while the current remains the same throughout a series circuit, the voltage (potential difference) across each component can vary depending on its resistance or impedance, according to Ohm's Law (V = I * R).
When did the Ancient Greeks discover electricity?
The Greeks discovered that if amber was rubbed it could produce sparks. They thought it was a special property of amber. The Greek word for amber was Elektron, hence the modern word.
Why did Benjamin Franklin invent the street light?
One of the big problems in the 1700's was fires caused by lightening and people were very afraid of their house, barn, or business catching fire. Fire was very dangerous because once started it often moved very fast and burned whole areas or towns. He figured out that if a metal rod was placed on the roof it take the brunt of the lightening and save the structure. By the way, he also started the first fire department in Philadelphia.
When did the US get electricity?
Thomas Edison patented an electric distribution system in 1880, which was essential to capitalize on the invention of the electric lamp. On December 17, 1880, Edison founded the Edison Electric Illuminating Company. The company established the first investor-owned electric utility in 1882 on Pearl Street Station, New York City. It was on September 4, 1882, that Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts direct current (DC) to 59 customers in lower Manhattan. Thomas Edison patented an electric distribution system in 1880, which was essential to capitalize on the invention of the electric lamp. On December 17, 1880, Edison founded the Edison Electric Illuminating Company. The company established the first investor-owned electric utility in 1882 on Pearl Street Station, New York City. It was on September 4, 1882, that Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts direct current (DC) to 59 customers in lower Manhattan.
How are electrically energized fires started?
Electrical fires are usually caused a defect in an electrical system that causes a part to get very hot, igniting nearby combustible material. A typical defect is a loose connection of a wire onto a terminal, which causes overheating and/or sparks.
Undersized and overloaded wiring is one of the main causes of household electrical fires. The next most common reason is cracked and crumbling rubber insulation on the conductors of old cables which should have been replaced twenty years ago.
More detail
Resistance in an electrical circuit produces heat and ultimately results in temperatures great enough to cause flammable material to ignite. Typically poor connections, overloading and conductor breakdown are the major culprits in causing electrical fires.
Overloading occurs when too much demand, such as plugging multiple electrical appliances into a single receptacle, is put on a circuit. Poor connections occur when a connection is loose or fails to make full contact of a connector surface, such as when a power cord is not plugged fully into a receptacle and partially hangs out.
Conductor breakdown occurs for a number of reasons such as corrosion, ionization, insulation breakdown and metal degradation. All metal will eventually degrade over time and fail to conduct electricity effectively. As it degrades a conductor increases its resistance and in turn, produces more and more heat each time it is used. In most cases a conductor will just simply stop conducting electricity before it can threaten an electrical fire. But sometimes this process results in a flash-over point occurring before total failure and then on-going arcing occurs which generates enough heat for ignition if some flammable material is close enough to this electrical arcing.
Although electrical fires are relatively rare, they do occur when the wrong conditions exist. Usually these conditions are easily preventable with a little common sense and observation: never plug more than one plug into a receptacle; if you smell a burning smell near anything electrical or if you see any evidence of burning such as a black coating of soot on a receptacle, do not ignore it, have it repaired immediately.
If you are plagued with electrical problems then have a licensed electrician determine if the wiring has deteriorated enough to require replacement.
In all cases, if you suspect an electrical problem or have doubts about the safety of any electrical device then stop using it and have it checked out.
<><><>
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO AN ELECTRICAL JOB
SAFELY AND COMPETENTLY
REFER THE WORK TO QUALIFIED PROFESSIONALS.
What is the enviormental impact of electricity?
Depends on the method of production. Conventional gas or coal powered stations have a high impact, whereas wind or solar have much less impact. Hydro-electric, while not producing CO2, does have an impact in terms of taking up land to make the lakes necessary to drive theturbines and in terms of the downstream effects of the change of flow of the rivers concerned.
How do you get a 220 volt single phase from 380 volt 3phase synchrounos generator?
220 volt single phase from 480 volt 3 phase that
one wire taken one phase and second wire connected in earth point. we get 220 v
The above answer is incorrect, one phase from a three phase 480 volt system will give you 277 volts to ground. You must use a transformer to get the voltage you need.
If a circuit is being changed, first make a modified drawing to fulfill the requirement. Once you have the correct modified drawing, get the wiring changed. test the circuit for safety and functionality to ensure what you have done is correct. Compare the modified drawing against the standards you followed.
What does it mean by rm in electrical system?
In electrical systems, "RM" typically refers to a "relay module." A relay module is an electrical device used to control a circuit by interfacing input signals with high-power output components. It helps in automation and protection of electrical systems by allowing them to be controlled remotely or automatically.
by wires
<<>>
Electricity is not a collectible commodity. It is generated and distributed as the demand requires. Small amounts of DC electricity can be stored in a capacitor but is not viable as an AC source. Electricity is distributed by wire conductors.
How do you convert 440 Amps to KVA for three phase system?
You must rephrase your question to make it more specific.
<<>>
The formula to use to find KVA in a three phase system is, KVA = Amps x Volts x 1.73/1000.
How does a 3-phase 115 volt power supply measure 200 volts in-between each phase?
You should have about 230 volts between any pair of 3-phase service legs: L1-L2, L2-L3, L3-L1. If the voltage measured between any one pair results in low or no voltage, then you have a fuse or circuit problem.
Electricity powers lots of things such as heating, cookers, light switches, and lots more!!!!!!!!!!!!!!!!!!!!
What is the Phase to neutral voltage on a 400 volt 3 phase power supply?
The line-to-neutral (not 'phase-to-neutral'!) voltage on a 400V 3-Phase wye-connected system is 230V.
Line voltage is the voltage as measured between any two (2) line conductors (hence its name!). Line voltage is often referred to as the 'line-to-line voltage'.
Phase voltage is the voltage as measured between any single line and neutral. Phase voltage is often referred to as a 'line-to-neutral' voltage.
"400V" on a 400V 3-Phase wye-connected power supply indicates its line voltage. Line voltage in a wye system is always the phase voltage multiplied by the square-root of "3" (1.732) and reflects the vector sum of two individual phase voltages present in a three phase system.
Thusly, if the line voltage is "400V", then the phase voltage is 400V divided by the square-root of "3" (1.732), which is 230V.
Examples of this for North American power systems are 120/208V, 277/480V and 347/600V. Examples for other areas of the world are 220/380V, 230/400V and 240/415V.
Diagram of star-delta connection of motor?
Unfortunately, WikiAnswers does not support graphic images, so I will have to describe the connection in words.
There are three windings, each with two wires. That is six connections. There are four connections in a star (wye) source, three hots and a neutral.
The star connection has one end of all three windings connected (together) to neutral and the other ends connected to each hot.
The delta connection has each winding connected end-to-end to each other in a ring, and each common point is connected to a hot. Neutral is not used in delta.
When was electricity first used in homes?
The Greeks first discovered static electricity about 2,000 years ago and used it to make compasses for navigating. There were some clay pot batteries discovered in Baghdad, Iraq; that date back about 2000 years also. They have not been able to figure out what the batteries were used for.
Can a single phase 220 motor run backwards?
Changing motor rotation
A split phase induction motor has two sets of coils and a centrifugal start switch. The start winding is in series with the start switch. The start winding provides a rotating magnetic field in one direction enabling the motor to start. The motor can be reversed by reversing the connections of either the start winding or the run winding but not both.
Does the electrical service drip loop prevent a short to the grounding rod?
Drip loops prevent water from following the electrical service conductor into the service panel, causing shorts and other dangerous situations. So long as the low point in the cable is below the main lugs, water will collect and drip from there, and not continue to the exposed live parts of the panel. We usually have a drip loop in a place right next to the place the conductor penetrates into the head or the place where it "goes through" a wall or barrier. That way there is only a short "uphill" run between the drip loop and the penetration point for the conductor.
Where can you find a drawing for a star delta starter?
This answer needs two parts:
1. The main 3 phase wiring.
2. The control wiring.
To be able to give them, please give more details, such as:
1. Do you have a stop/start button or do you have a pressure switch or remote stop/start?
2. What are the voltages you are working with?
3. Do you need an explanation of how it works and the reasons for wiring in this manner?
For more information, please read the answers to the Related Questions shown below.
Why doesn't current flow through the neutral to earth?
The 'hot' wire delivers current from the power station into the load, which could be any electrical appliance such as, for example, a fridge, a light or a motor.
The 'neutral' wire is there for the specific purpose of carrying the current coming out of the load back to the power station. If the neutral wire was not there, there would not be a complete electrical circuit from the source (power station) to the load and back to the source.
In normal operating conditions the connection from the neutral wire to the Earth does not carry any current.
There should always be 0 V (zero volts) between the neutral wire and the Earth. i.e. no potential difference should ever exist between the neutral wire and the Earth.
The "neutral to earth" connecting wire is fitted to ensure that no part the neutral side of the circuit can develop a high voltage above Earth. If that connecting wire wasn't in place and the circuit had no other protection device (such as a GFCI or RCD) fitted, a very dangerous electrical shock hazard could be present which could electrocute the people using the appliance.
That is why any grounding wires, fitted either to the appliance or to the breaker box, should never ever be cut or removed.
What is the system used to describe wire sizes?
In North America the system used is AWG. American Wire Gauge.
What materials are needed to construct a step up transformer?
Basic materials to build a transformer are magnet wire, iron core and insulation material to separate the two windings.
