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Electrical Troubleshooting

Parent Category: Electrical Wiring
Electrical troubleshooting involves checking and resolving an electrical problem (such as when an electrical device stops working correctly). Common troubleshooting practices include checking if the power is on, the bulb has burnt out, or the breaker tripped.
what are the notes "my heart will go on " on viiolin 
ohms voltage Ac Dc power i think thats all i know sorry guys
kVA - Kilo Volt Ampere The calculation used to find kVA is P=I x EWhere P is Power in Watts (W)I is the current in Amperes (A), andE is applied voltage in Volts (V)The result is divided by 1,000 to denote the k for kilo. As such a voltage of 120 with 10 amperes being drawn would equate to 1200...
Bad ballast can cause this, if you are using T12 tubes , upgradethe ballast to a newer T8 ballast and use T8 tubes.
Either all these lights are fed from one live (+ve) wire and that  has broken or you have a bad earth wire (-ve) for all these lights;  unless many wires have been damaged. Take a length of wire that can  take 30A and connect to the -ve side of battery and connect  directly to the -ve side of...
You should not have received any shock IF (a) the iron's earth wire was properly connected to the safety earth or ground pin in the plug at the end of the appliance's cord AND (b) if the socket outlet's earth or ground connector was actually connected to earth or ground. If the iron's earth or...
The term killowat simply means 1000 watts. Watts are computed as  volts times amps. A load of one killowat used for one hour consumes  one killowat hour of energy. That would be 60 killowat minutes,  however that measurement is seldom used.
Take the oven to an appliance repair shop. It sounds like the door safety interlock has jammed the opening mechanism.
The maximum distance of a wire drop between a service pole and service connection is undefined, as it depends on many factors not included in the question. The information needed to actually compute such a distance includes, but it is not limited to, the service volts, the service Class (60, 100,...
Using a megger you check from either positive or nuetral to ground.  The megger should read open (usually OL). It doesnt matter which  connection you choose as long as one is ground. If the megger shows  anything other than open the windings are bad.
Quite a bit of bad stuff can occur, simultaneously, when a person is electrocuted. The first is muscle energy depletion. When muscles are electrically stimulated they go into spasm and deplete the sugar reserves, making it impossible for the muscle to continue to function. When that occurs, it may...
Electricity is one of the many forms of energy naturally occurring in the universe. Specifically, electricity is the flow of electrons through a conductor, like a wire. It comes from other forms of energy. In the case of a power plant it comes from burning of fuel, nuclear reactions, rays of...
There are many components in HVAC and all of them have various types. For example: (01) Compression equipment: Compressor: Reciprocationg, Rotory, Screw, Centrifugal etc. In absorption system the compressing system itself is different. (02) Expansion device: Thermostatic Expansion valve, High side...
Broad question.... Never become the path to ground, If the electricity flows across your heart, little as .4 milli amps could stop your heart. If you know its hot or energized and you have to work it hot have someone there with you and make them aware of the hazard and what to do.... worse case...
A diode should show low resistance with the leads hooked one way  and show an open with the leads reversed
To answer this question a supply voltage must be stated. Also the wattage of the lamps is needed.
The circuit is wired wrong. Contact a qualified electrician to make the necessary repairs. You don't describe the problem well enough to troubleshoot. If there is a fuse involved and it blows you would have to replace the fuse before anything should turn on. If this circuit worked at one time and...
I would opt for the two twelve volt batteries in parallel. This configuration will give you the voltage that you need for the system to properly operate plus the endurance time that you can draw from the batteries will be doubled. The amp/hours capacity of batteries when in parallel are additive.
Nothing will happen if you dip the free ends of the wire in a glass of distilled water with a 9 volt of battery for a minute.
Bus bars themselves don't usually fail. Failures normally occur at a connection point, and is usually caused by the bolt or screw becoming loose, or by corrosion. The resulting resistance causes the connection point to become hot, and eventually fail.The most common method of detecting this...
There are transistor testers. The down side is that the transistor has to be removed from the circuit to be tested.
Hook the negative on one battery to the positive of the second battery. Connect to the positive on the first battery and the negative of the second battery. This gives 24 volts.
I = P/V is the equation. It depends what voltage the circuit has eg. I = 24000/110 or I = 24000/240 etc.
A 250 MCM copper conductor with a insulation factor of 75 or 90 degrees C is rated at 255 and 265 amps respectively. This conductor can only be load to 80% capacity which allows a working current of 204 and 212 amps respectively. To obtain the full capacity of 250 amps a 350 MCM conductor will be...
Try your local library web site. Some have on line data bases that allow access to Chilton Auto Repair Manuals.
== Answer ==   i am 6 grade and long ago i dropped my phone in a cup of water. it did not work for a long time so i put it away for like months. well i wanted to use it again so i got it and put it in the frezzer for like 4 or 5 minutes chargerd it and now it works even better. put it in the...
It probably has something to do with the viscosity of the oil that is in the crank case. The heavier the oil the harder it is for the engine to turn over when the temperature goes down. In some of the most northern climates at the end of the work day the oil is drained and brought inside and kept...
All electrical relays consist of two circuits.1.. A control circuit that utilizes a control voltage with a minimum current toswitch a2.. Power circuit requiring much greater current.The advantage of using this type of circuitry is that the switches or sensors that control large loads can be very...
The voltage drop should not exceed 3% on a feeder or branch circuit.
Yes, just make sure they are connected in Parallel. (+ to +; - to  -) In series they wil be 24 volts and will fry most anything that  takes 12 volts.
Its not. Its that the power company has to be able to have an easement to be able to conform to certain regulations. Like cutting the trees to make sure there are no power outages.
A megohm meter is used to test motor or transformer windings. It is  used by placing the leads from a terminal to ground or between  phases in a multi phase system. there should be no connection (OL)  between the two.
An electrical breaker is a safety device used to open a circuit that has an electrical fault on it.
The wiring diagram and schematic are in the installation manual.
cold batteries work better because wires conduct better the lower the temperature<<>>Not so, lowering the temperature of a battery will cause the batteries chemical reactions to react more slowly, so if a battery is used at a low temperature then it has less cranking power.
You will have a 12 Volt source with double the charge capacity.
because batteries works on the principle of electron charge and an electron can have either a more positive or negative charge but the electron wants to have an equal amount of pos. and neg. charge so when batteries are simply they pull the positive charge to one side and negative to the other side...
The best way to test a motor is by doing a megger test. On the whole megger testing is non destructive. What happens is a DC voltage is applied to the motor's windings. It is an insulation test to see is the insulation has been injured in any way to cause a short circuit when normal power is applied...
Depends what you are trying to achieve. + to + and - to -  (parallel) will give you 6 volts with greater charge capacity. + to  - (series; with the external connection to the other + and -) will  give you 12 volts.
Class 1 Division 1 location is designated as an area where flammable volatile liquids or liquefied flammable gases are transferred from one container to another. An example of this would be at a gas station when you put gasoline into your vehicle.The area around the pumps is class 1 div. 1.
An analog sensor is a device that measures an analog quality (such as temperature, wind speed, sound frequency or velocity). Many of us fail to recognize the difference between qualitative and quantitative measurements. Quantitative descriptors are actually just the result of counting something;...
Nothing is wrong with a fuse if it is conducting. That is what they are supposed to do. If you are measuring across the fuse (one lead on the incoming line and one lead on the outgoing line) you should read zero. If you are reading 208V in this test, then the fuse is blown.
Absolutely not! It is a 14 volt drill. Use a 16 or 18 volt battery will destroy the drill in short order. It will run but not for long.
synchronous and induction motors
In series, yes. In parallel, nope! Putting a Yd1 transformer in series with a Dy11 transformer would result in the output of the Dy11 transformer being identical to the input of the Yd1 transformer with the exception of the voltage magnitude - this will change depending on the winding ratio's on...
  you put the trans fluid in the same spot where you take out the dip stick to check the levels,with a long funnel..ask auto store for one..........
No guarantees but try this connection. The white (neutral) from the power supply is common to both start and run windings. The black "hot" wire connects to a common side of the start switch. This means that the "hot" wire can supply voltage to both sets of contacts on the start switch. The switch's...
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable. See related links below.
Sounds like a 240v motor. LA would be live connection 1 (120v); LB  would be live connection 2 (120V) and N is the neutral connection.
it is a star to star connected transformer. It having two neutrals. One is at Primary side and another is at secondary side to balance the loads. Y= Primary star connection N=Primary Neutral y=secondary star connection n=secondary neutral and 0=No phase shift between primary and secondary. So...
The discharge of electricity built up during a storm can be dangerous. It is a static discharge that is generated by positive an negatively charged clouds. When these clouds come in close contact with each other there is an electrical static discharge. This is known as lightning.
The way you check to see if an under voltage relay is wired properly is to disconnect the electrical supply. If the device that is connected to the load side of the relay does not start up or energize when the electrical supply is reconnected, then the relay is connected correctly.
Most likely it is coming to the end of its life (you can see this if the ends are darkened) or it could be the "starter" that need replacing.
Electric current . . . Ampere Ocean current. . . . meters per second
HOW many mode sdo a universal shift register operates
De energising means you are disconnecting a device from electrictysource. Switch off the device, physically disconnect the device tode energise the circuit.
The automatic door has a special infrared sensor in which a person walks towards the door then the sensor detects that someone in there, it then activates the electromagnets in the entrance system which allows the door to open at at certain speed.
Noise is usually caused because of a low signal strength compared to extraneous frequencies in the same range. You can also get noise because of bad connections in your antenna, satellite or cable connection. Without knowing the characteristic of the noise, it is hard to speculate. If you have an...
480 / 1.732 (square root of 3) = 277. This is due to the delta  configuration in a 3 phase system. Any phase to another is 480v.  Any phase to ground is 277v
Any amount of voltage at all if given the right path. Its  technically not the voltage that matters, but the current. As  little as 20 milliamps across the heart is enough to kill you.
A 24 volt charger can charge two 12 volt batteries. The leads of the charger are connected across the two cables that leave the batteries going to the load. There will be a jumper between the batteries. Make sure that the charger leads are never connected anywhere on this jumper cable.
First of all, a 150 HP 460V 3-phase motor only draws around 170A, so two of them would only draw 340A, not 800.340A at 460V equals almost 300,000 watts (or 300kw), and the generator would need to be sized a little bigger than this to start such big motors.
A kilowatt is an unit of true power in an AC circuit -as measured by a wattmeter. A kilovolt ampere is an unit of apparent power in an AC circuit, which is the product of the voltage across a load by the current through it. The relationship between the two is: kilowatt = (kilovolt ampere) x (power...
Answer . Put the meter on AC Volts, 200V range. For residential US service you should have 120V between hot and neutral, 120V between hot and ground, and 0V between neutral and ground. Remember: narrow prong is hot, wide prong is neutral, round prong is ground. Don't set your meter to current...
im not talking about the cord itself , im talking about the  brick or trasformer thats located inline that regulates current to  your lap top. main question again is this suppose to get hot ?  Hot cords I assume you mean the cord itself is hot. Yes, this  happens when you are either putting to...
Typically a loose connection is either wires in a wire nut not making a proper connection, or a wire not tighten properly in a breaker and/or device e.g., outlet, switch, etc.
Yes, they are called side cutters, dykes, snips, etc. They are actually not pliers though.
you should start at the fuses or breakers. then check for voltage at the source. if you have voltage at the source, say ceiling fan. check voltage across the motor(voltage drop), . check for loose connections, loose grounds. check for opens in the circuit with power off from begging to end .check...
A thermocouple detects temperature.
That condition is called a "ground fault". That's when the insulation of the motor winding has a break somewhere, allowing current to leak to the motor housing. The motor SHOULD be grounded, protecting the user from electrical shock, but many older motors were not grounded, providing the potential...
Helmet, Ear protection, face shield, safety glasses, sock hood, FR  shirt and pants, Voltage rated gloves, Leather glove protectors,  Voltage rated tools, according to NFPA-70e standards
  == Answer ==     IT IS IN THE WIREING SOMEWHERE. YOU NEED TO HAVE SOMEONE CHECK ALL OF THE WIRING TO MAKE SURE NOTHING HAS COME LOOSE OR BEEN CUT IN HALF.
A generator needs to have residual magnetism in its field coils to start the generation of electricity. A generator that has not been run in a long time will loose this magnetism. Because the field voltage is a DC supply, a battery across the field wiring will energize the coils instantaneously....
  == Answer ==     A "110" volt outlet cannot be converted to a "230" volt outlet. A 230 volt outlet requires a new wire run to the outlet rated for the appliance you plan on plugging into it. Example an airconditioner that requires a 220 volt 20 amp circuit would have to have a 12/3 w...
All UPS units have a sensor that detects when line voltage goes away. Some have sensors that detect the battery status and can calculate the approximate time until the unit can no longer function because of battery depletion.
Bottom line who ever looks at the symbols they all mean the same which is a very good idea. this should be all across the boards. it makes it a lot easier.
Line voltage equals phase voltage multiplied by the square root of three.a.k.a. E l = E p X 1.73In a 3 phase 480v system the phase voltage is 277v. ThereforeE l = 277 X 1.73= 480v
It is the problem of Starter or Choke so you should check the starter and the choke. If they are damaged , you have to change these things.
The load is essentially what consumes electrons. For example a load on a light circuit would be a bulb. Therefore, if you don't hook up a load you aren't doing anything. It is like turning on a light switch without a bulb. It may give you some minor exercise, but it doesn't do anything useful.
First check and see if there's any voltage on the cable by using a voltmeter andthen use an ohmeter to check for resistance to ground.
You just need a small cheap ($5) stereo amplifier/speaker like those for an iTune only cheap, two cheap transformers ($3 ea.), some small covered wire and 4 Tens type electro pads ($12/4).
They are a ripoff but you get about $55 in tools are resistors and juke for $500. I could buy everything in the crap toolkit for $55.
Here are some places:(Add an "h" prior to the address when you copy and paste) ttp://hsinchang.gmc.globalmarket.com/products/details/transformer-101798.html ttp://www.unelco.dk/files/pdf/UNELCO_Katalog_2.pdf ttp://www.eckind.com/product_2615500_150w-12v-ce-cb.htm
Parking lights may stay on after a BMW is turned off because the  headlight is bad. A faulty relay could also cause this problem.
  === Answer for USA, Canada and countries running a 60 Hz power supply service. ===   === ===     === ===   Old practice [accepted by National Electrical Code requirements] allowed the frame [chassis] of dryer to be bonded to the neutral conductor by a link to provide ground. New...
Symmetrical components are used to model faults on unbalanced high-voltage transmission/distribution systems, in order to predict the magnitude of fault currents resulting from various types of short-circuit fault, so that appropriate settings can then be applied to protective systems. The basic...
If a cable insulation is described as RHW, you would be able to use the cable for what maximum temperature? A. 194°FB. 140°FC. 86°FD. 167°F
In electrical terminology it means that wires have been connected under the wrong terminals.
Yes but you need a attentuator to cut signal down to input levels. You can get them at radio shack.