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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
What size generator will be necessary to run a two and a half ton air conditioning unit?
To answer this question the voltage and amperage of the unit must be stated. Once this is given the generator size can be calculated.
How much electrical energy does a 100W lamp use in 1 second?
Watts measure power. Energy is measured in joules and is the product of power and time. 1 joule = 1 watt for 1 sec Energy used in the example = 100 x 1 = 100 joules
The difference between a 4-wire and a 3-wire is a separate ground and neutral. That being said, all you have to do is connect the ground wire to chassis ground, and the neutral wire directly to the neutral connection. The phase wires are made up the same as the old cord. You must also remove the bonding jumper, but if there isn't one... 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.
Why does electricity always want to get to the ground?
Electricity will always take the path of least resistance, usually the case is though a ground, if the wire becomes uninsulated you will see why it is very important to have equipment grounded (otherwise you could become the path of least resistance if you touch it)
A kettle is wired in series when it is plugged into the household receptacle. The "hot" potential is on one side of the resistive load and the neutral return wire is on the other side of the resistive load.
How can you determine if an electric motor is 50HZ or 60HZ if there is no name plate?
One way would be to hook it up to a supply (by itself, with no load) and measure the speed with a contact tachometer. If your supply is 60Hz, and the motor speed corresponded to one of the standard motor speeds, it would be a pretty safe bet you had a 60Hz motor. If the speed was about 20% faster than a standard speed, the motor is probably a 50Hz motor. Or 20% slower if you were running a 60Hz motor on 50Hz
For instance, a 1750 RPM 50Hz motor would spin at about 2100 RPM if you ran it on 60Hz.
If surge protector battery gets hot is it bad?
Yes, it's done. Or, the trickle charger that keeps it charged is of poor quality... and is trying to continue charging it even though it's fully charged now.... so it's service life will be shortened.
In the construction trade, bus wire is used for the feeders that connect the two wires on a blasting cap to the power supply. The other end of the bus wire is connected to the hand generator that is used for a power supply to energize the blasting cap.
Breakers are designed to open when there is too much current. For instance, if you have a 100A breaker and you put a 120A load on it, it trips.
But what if you drop a wrench or piece of pipe across the wires? Much more than 100A will flow, usually thousands of amps. This is fault current. If the current is too high, the breaker can weld itself closed and fail to trip. This would be very bad.
So, breakers have an interrupt rating. It indicates how much fault current the breaker can safely handle and still operate properly. Your 6000A or 10000A is the interrupt rating.
You would need a 10000A breaker instead of a 6000A breaker if the fault current could be in excess of 6000A, but less than 10000A.
How much fault current can flow in a given situation? It depends on how heavy-duty the utility distribution transformer is, and how big the supply wires are. The utility company can usually supply the information which an electrical engineer can use to calculate the interrupt rating needed. The whole panel, not just the breaker, must carry the same or higher interrupt rating.
An electrical riser diagram (also known as a "one-line" diagram) is a drawing that shows how an electrical system is designed by diagramming how the different components are connected. It is the roadmap which electricians use as the directions to how the system is put together. You can learn more about them here.
What tool do you use to measure watts?
If you use this formula W = Amps x Volts you will not need any tools. Using equipment nameplates will give you both values. If nameplates are inaccessible then you need a volt meter and an amp meter to obtain these values.
Some cars, mircowaves, computers, toasters, hair dryers, cell phones. People wonder how cell phones run on electricity it's because the battery inside the cell phone is powered by electricity. Without electricity the battery would die out after a while.
How do electric generators work?
google it! but im sorry because i dont know the answer but i hope you find it!!
How do you hook up a switch to a light using a marine battery?
Hey. Same as any battery. Connect the Negative terminal straight to the Negative on the light (if needed), Normally the outer rim of the globe. Connect the positive terminal to the switch, then from the other plug on the switch to the positive terminal to the light. Done.
How do you test and reset a GFCI receptacle?
GFCI (Ground Fault Circuit Interruptor) A GFCI receptacle can be tested with the built-in test button, which will cause a small ground fault, tripping a properly working device. GFCI receptacles should be tested monthly. GFCI receptacles can also be tested with a plug-in type GFCI tester. This tester has a GFCI trip button on it which accomplishes the same thing as the built-in test button. Your local inspector will usually test with this method. If your receptacle is tripped, it should reset by pressing in the reset button. If it doesn't, the device is wired incorrectly, has a faulty load plugged into it, or is simply in need of replacement. ---- IF YOU'RE 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 powerat the breaker box/fuse panel BEFORE you attempt to do any work AND always use a meter or voltage indicator to insure the circuit is, in fact, de-energized.
Can you use a multiple strand cable for wire wrapping?
Traditionally, wire wrapping techniques are best done with typical wire because it keeps its intended shape/form. Multiple strand cable is mainly used for stringing beads. It cannot be shaped into various forms, as it will not retain a certain shape.
Do you have plans for making a wind propeller?
Please see the related links for more information on these plans.
Which types of motor used in industrial side?
There are many types of motors used in industrial applications. The most common would probably be a DC motor, as the motor's speed is easily controllable and well suited for production processes.
