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Electrical Wiring
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4,935 Questions
An electronic device that limits the amount of current that can flow through it?
Not in normal circumstances.
A diode is an electonic device that allows current to flow freely in only one direction.
What is the steady flow of electrons through a conductor?
The terminology for a steady flow of electrons through a conductor is called the current of the circuit.
How do you disconnect a light switch and outlet that are tied together?
If there is a black wire going from the outlet to the switch and the other side of the switch goes back to the outlet then just cut these wires and connect supply wire directly to outlet. If the supply goes to the switch first, disconnect from switch and connect the two wires with a wire-nut. Some situations only switch one of the two outlets in a duplex device. Do the same thing, but also replace the outlet since the strapping between both outlets has been removed.
Why does a 120 volts outlet reads 145 volts?
Assuming a typical North American residential service, Voltages of 145VAC are possible when the Service Entrance (Source of Electrical supply) has lost its neutral (Grounded Current Carrying Conductor)
Especially in older installations, the lose of the 'Neutral' can cause voltage to swing from 0vac to 160V (The highest I have ever seen personally). The reason the voltage 'floats' is because the system has lost it's neutral reference from the power company's transformer.
The condition is very hazardous and can/will severely damage anything connected to the system.
It is strongly recommended that you disconnect any devices and have a licensed electrician inspect your service entrance immediately. Typically the problem is customer equipment side, and you will be charged. In the event the power company equipment is responsible, they could be (possibly, varies depending on location and power company) responsible.
In my personal experience, this condition is caused by either a poor connection at the weatherhead, or lose/corroded connections either in the meter base or in the main breaker panel.
Typically, customers are responsible for their respective service entrances up to the weather head. Which is the mast and wires above the meter base, all the way to the connections in the drip loop.
What is the capacity of a 35mm2 cable?
Current carrying capacity is different for aluminum from that of copper cable. Under different conditions like, type of insulation, number of conductors, in conduit, underground, in air, single or multilayer, system voltage, the current carrying capacity varies a bit. Hence You must refer a standard chart from a reputed cable company.
What are some practical uses of diodes?
Diodes are largely used for changing AC into DC. A half wave diode bridge will use two diodes for this purpose. A full wave bridge uses four diodes to accomplish this task.
See related links below.
A path that electricity can move through is called?
the complete path that electricity can move through is called
What is the primary function of the twists in the twisted pair cable?
The primary purpose of twisting wires/cables is retaining flexibility while increasing the ampacity (current capacity of wire/conductor). Twisted wire/cable is more flexible than a solid wire with same ampacity.
How many outlets are allowed on a 240 v branch circuit?
Branch circuit loading
In Canada the CEC states that there shall be not more than 12 outlets on any 2-wire branch circuit. These outlets shall be considered to be rated at not less than 1 amp per outlet
Where the connected load is known, the number of outlets shall be permitted to exceed 12, provided that the load current does not exceed 80% of the rating of the over current device protecting the circuit.
For example on a 15 amp breaker, 15 x 80% = 12 amps, hence the standard of 12 outlets on any 2-wire branch circuit.
On a 20 amp breaker, 20 x 80% = 16 amps. So from a 20 amp breaker this allows 16 outlets on a 2-wire branch circuit as long as the outlets are not considered to be rated at less than 1 amp per outlet.
The definition of an outlet is a point in the wiring installation at which current is taken to supply utilization equipment. What this means is that if a light switch and a fixture outlet were on the same 2-wire branch circuit they would be subtracted from the maximum count of 12 receptacle outlets on the circuit which would leave 10. If the light fixture draws 3 amps plus the switch outlet, then the total circuit outlet count would be reduced to 8 receptacle outlets (12 -- 3 -- 1 = 8).
On a standard specification home most electricians will wire one circuit per room, the outlet count usually never reaches the maximum of 12 outlets.
Is glass a conductor or insulator of electricity?
Glass in a molten state is a conductor of electricity. When glass turns to a solid state it becomes an insulator.
Basically, glass in a window or a test tube would be the solid state and so it is a insulator of electricity.
How many millivolts in a volt?
that would be 1000. milli means one thousandth of the base unit (volt) millimeter is one thousandth of a meter. milliliter is one thousandth of a liter. milligram is one thousandth of a gram
A sub-panel is always fed from a main panel. The main panel is situated where the electrical service wiring first enters the main structure on a dwelling plot or building site.
A sub-panel can be situated within the same building as the main panel or it can be in a subsidiary building or structure (such as a garage, garden shed or workshop) that is separate from the main building.
More information
A sub-panel is another name for a secondary breaker box, just as "the main panel" is another name for "the main breaker-box".
"Breaker-box" and/or "panel" are just alternative short names that are used instead of the full name "circuit breaker box".
How far can you run a 100 Amp main service line?
A Discussion has been started about this Question. To view it or take part click on the View Discussion button below. By asking this question you are probably not quite ready to take on this particular task. You may or may not get lucky and receive some information in an answer here! If you hope to get enough information on this site to be able to do this job properly and safely, please do not rely on getting accurate information about such a potentially dangerous subject. Really, don't do this one yourself. Electricity is far too dangerous to handle if you have not been trained how to do this work. If you put just one wire in the wrong place you risk being killed by electrocution or you could even start a house fire.
How to do this job depends entirely on the Wiring Codes or Regulations for the locality (Town/State) and on the exact locations of the main service entry point and any outlets you wish to install. If they are anywhere subject to water splashes or spray - such as in any room supplied with running water pipes, like a kitchen, bathroom, shower room, etc., or in a pool-side area - in many places nowadays it is actually illegal to attempt to do this kind of work unless you are already a licensed electrician. If you don't want to go to your local library or bookstore - to find and read some books about electrical wiring and appliances and how to install them safely, and to find out about your local Wiring Codes and Regulations - then the best advice anyone should give to you is to call a licensed electrician either to do the job for you or to advise you what you may be allowed to do yourself. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
Which form of electrical current was favored by Edison?
Thomas Edison favored and promoted DC current. He claimed it was safer than AC. However it was almost impossible to send DC current over a long distance so AC became the standard for the world.
8.1 KWh at 115 volt what is the amps?
In U.S. voltage is usually referred to as 120 nowadays. so if in U.S. substitute 120 where 115 appears below.
Power = Amperage times voltage
So, in your example, 8.5 times 115 = Watts
How do you wire a garage door opener?
Garage door openers do not get "wired." They are sold with a standard 3-prong, 120VAC plug that is about two-feet long and plugs into a 15A, 120VAC outlet -- next to the location where the opener is installed. In the absence of a nearby AC outlet, you will need an extension to power you garage door opener.
Well power doesn't get wired the wall mount and sensors do get wired use the directions they will tell you where hook the wires on the back of the opener.
How can i use an old computer monitor as television?
You need a converter that changes a TV signal to a VGA signal (the type the monitor uses). These converters can be found by searching the internet for 'TV to PC' converters, 'TV to VGA' converters, etc.
How long goes a plasma screen last when cracked?
Today's generation of plasma TVs last a long time. With newer technology there is little chance of image burn or other problems that have plagued plasmas in the past. Expect it to easily last 5-10 years.
What good has technology brought us?
The benefits from technology include communication being more efficient and faster. Technology helps in the medical field with research and maintaining patient records. Computers have opened up distance learning and new methods of teaching.
What happens when 110 volt equipment is plugged into a 110 volt source?
Each equipment has electrical specifications; for example most laptop chargers are rated to handle 110V to 240V at either 50-60Hz. In other words; the charger can be plugged into either 110V or 240V and it will adjust automatically and keeps the output at the voltage the computer requires.
Some desktops have an option on the power supply to accept either voltage, which must be set manually.
However; much of the electrical equipments are set to a single voltage and it can not be changed. should someone plug in a 110V rated equipment into a higher voltage (i.e. 240) then the internal parts will burn.
How can you prevent fires from electrical equipment?
This depends entirely on what you are doing. You can prevent static shocks be wearing tighter clothing, and avoiding wool and nylon. You can prevent being shocked by the wall outlet by using protective outlet covers. When working with hobby electronics, there is little more necessary then caution. Once the voltage you are working with surpasses about 1000 volts or so, there is nothing you can do except keep your distance, and pass it off to someone experienced in dealing with high voltage.
What is the purpose of running overload protection for a three phase motor?
An electrical circuit is designed to carry a certain amount of energy, or voltage. The flow of energy, called a current, should travel through the path from one point to the other unimpeded. If that current is interrupted, it causes what is commonly known as a short circuit. If an electrical system is designed properly, overload protection kicks in to stop the flow of energy until the source of the interruption is removed.
A toaster draws 8 A of current with a voltage of 120 V?
The voltage is the main power of a toaster!! but if the current flow is low the heat of the toaster is less heat that you expect, the 8 A is right for your toaster!!!
the default pin is usually 1234 unless someone has changed it
What part of a circuit is the light bulb?
It has components that are arranged end to end in order to produce light.
