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Electrical Engineering

~33600 answered questions
Parent Category: Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.

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You cannot. It must be taken out of the circuit and then tested on its own. That's not 100% true because, if it has wires at its ends, you can cut through one wire with an appropriate tool and then test the capacitor "out of circuit". If the capacitor is ok you can then re-join the two cut wire end…
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%DETAILS% Answer Hey John==On the intake close to the EGR there is a solonoid that has wires and vac lines going to it. Make sure the wires are connected and not shorted. GoodluckJoe
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Hey Justin==If you would state the kind and year of car you have it would be easier but some cars have fuseable links and some are in the fuse boxes under the hood and some are at the starter. Good luckJoe
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Answer my 1994 s10 has manual mirrors, windows and doorlocks but when i removed the door panels to replace the outside mirrors (AGAIN!) I saw that I am already wired for the electric stuff, i just have to pay more $$ for the electrical version of the part and plug it in! try going on ebay, most …
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Without knowing what you have for a regulator, I can't say this will help. I did one last spring for a friend on his old antique boat. It is a 6v system which we changed to 8v (positive ground at that).This regulator is on a generator, not alternator, probably same as you, basically a small metal bo…
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Hi, I want to fit new injectors to my eldorado 1976 and have now found some from a company who believe it or not have 50 of these at $35.00 each..anyway in answer to your question if you have the old ones (which should be green and not blue) get your ohm meter and measure across the two terminals th…
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Well somethings i need to know? Is the truck engine turning over and just not starting? If the truck is turning over i would first off guess either gas or elelctrical problems. If the starter is not turning the engine over, then i would point at the starter relay (you should hear that click when…
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On a bosch CIS or CIS E fuel injection system there is a thermal time switch located on the engine upper radiator coolant hos at the head. This device controls the cold start injector timedto engine temperature, cold engine up to about 10 seconds of injection, hot engine 1 or 2 seconds of injection.…
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U disconnect the NEGATIVE battery cable & put a 12Volt test light IN BETWEEN the cable & battery post(connection) THen U start pulling fuses un- till the light goes off MAKE SURE U have ALL switches & doors shut because (doors-radio-etc) will turn on the test light.IF IT still doesn't go…
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it supplies power to certain items constantly; even with the ignition switch off. pcm, clock, dome lights, to name a few.
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There is an in line fuse coming off the battery cable...check this first then check fuse panel inside car. Go to www.autozone.com, enter car info and click on repair manuals and look at the fuse locations under electrical section...good luck
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It has no circuit breakers. It has fuses, and fusable links.Unless GM made changes from 1990-1995......the owner's manual for my 1990 Camaro RS shows circuit breakers. Also, it says the wipers are protected by fuse, and circuit breaker. Myself, I have been trying to locate this circuit breaker, but …
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A diode is a one way valve for electricity. It will allow current to flow in one direction but not in the opposite direction.
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Any voltage that is fed into or "applied" to an electrical circuit is referred to as an "applied voltage".
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Manual for a Power Rider see at http://www.denliv.com/sale/PowerRider-album/ Unfortunately, the Braun Company (who used to sell the Power Rider), has gone out of business. The good news is that the Power Rider is quite a bit like the Cardio Glide which is made by Weslo. You can find a manual on t…
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Power Factor In AC systems, "Power Factor" is the ratio of volt-amps to watts. To get volt-amps, you also multiply volts times amps. With a resistive load, such as an incandescent lamp, volts times amps equals watts. All of the power gets dissipated heating up the lamp filament to make it glow. In…
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Use a voltmeter and an ammeter to measure the supply voltage and load current; the product of these two readings will give you the apparent power in volt amperes. Use a wattmeter to measure the true power of the load, in watts. Divide the true power by the apparent power, and this will give you the …
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not enough information to give an most buildings have at least 100 to 200 amp service what specifically are you talking about? a water heater is 30 amps but it does not use 30 all time Low resistance and high voltage cause high currents [in amperes] an Ampere is the unit that is used to measur…
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The reason that 120v service was chosen, was economic. Originally electricity was delivered to homes, and most businesses, for a single purpose and that was lighting. Can openers, TVs, washers, dryers, electrical factory machinery, etc. came later. At the time the most cost effective form of light b…
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The short answer is "no". A 100A panel will be protected by a 100A or smaller main circuit breaker or fuse, and if the sum of all the loads on the various branches exceeds the main breaker rating, it will trip and power will be disconnected long before any damage can occur to the panel. for USA, C…
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Absolutely.As long as the converter (or any power source) is rated at the same voltage, with more current than the device needs. Sometimes, a device may have a higher initial current surge than it's operating current, keep this in mind. Some converters do a good job handling momentary surge, some do…
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The fact of your asking really says you would need a lot of coaching to keep you out of trouble here. Meters, by nature, aren't really designed to be dependably or safely put into electrical outlets. I suggest you buy a outlet tester at your local home store for $6- or so. Instructions are with it, …
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The voltage drop in a cable is the current multiplied by the resistance. For a twin-wire cable the resistances of the two wires are added. Cable resistance for different sizes of cables can be looked up in wire tables. More detailed answer for USA, Canada and countries running a 60 Hz supply servic…
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for USA, Canada and countries running a 60 Hz power supply service.It is important that you should read see the answer to the Related Question shown below.<><><>It won't run, there is insufficient start up voltage. It's all in the way the windings in the motor are connected. Since …
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%DETAILS% Answer I would wonder if the items that are tripping the breaker are being plugged into the same outlet. There could be a problem with the outlet or the wiring in the box in the wall that the outlet is mounted in. If one of the screws on the back of the outlet that connects the wire…
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I believe that the wires supplying a 30 amp circuit must be at least 10 gauge. If you have 14 or 12 gauge wires going to or from your 15 amp breaker, then drawing 30 amps over it could cause a fire hazard. It's like using those cheapo non-UL certified extension cords to plug a MILLION X-mas lights i…
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No! At this time I wouldn't have less than a 200 amp service for a 3 bedroom house. Keep in mind just because there is a place to plug "stuff" into doesn't mean there is enough capacity in the wiring to handle the load. Please call an electrician. The Fire Department call would be much more expensiv…
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"Load Factor" is an indicator of how steady an electrical load is over time. If your electric billing rate includes both an Energy (kWh) and Demand (kW) charge, your load factor can be calculated by the following formula: L.F. (percent) = [(Total kWh)/(# Days in Bill Cycle x 24 hrs/day)]/[Peak kW …
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Answer I believe it has to do with the windings in the motor. When wired to 120V, half the motor has a positive polarity and the other half has a negative polarity. Then as the current alternates (60 hertz AC) the polarity flips, the magnetic poles oppose each other and cause the motor to spin. …
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220 volt AC current is achieved by having two 110 volt lines with opposite waves or phases. One line will be positive while the other is negative then they flip or alternate 60 times a second (60 hertz). When connecting a volt meter to each of these lines it will read 220volts. Connecting a volt met…
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Note "2-phase" to describe US residential service is depricated nomenclature. US residential service is single phase because the two hot supply phases have 0 degrees of separation between their phases: therefore they are in phase. The two phases are pulled from 2 out of 3 corners on a 240v (line-to…
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reset your breaker...... make sure it is pushed completely to the off position. then turn it back to on. ...... Or, it may be tripping with your wiring job. <><><> Maybe either the hot or the neutral is still disconnected from the circuit? Or, maybe, within a socket outlet you wa…
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It varies based on the ballast. Most ballasts nowadays are "power factor corrected" to try and compensate for the bad powerfactor in switching power supplies. The actual power factor of a individual fixture is entirely dependent on the circuit of the ballast, which changes from design to design.
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Yes, but I do not know of an adapter per se. Expose your 220V power lines. There should be two hot wires (black and red). They can technically be split apart and wired to two separate 110V outlets, but the neutral wire would have to be shared (not split, shared), same with the ground wire. Don't do…
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for USA, Canada and countries running a 60 Hz power service. A service drop to a home is done with wire that is called triplex. This means that there are three wires twisted together that go from the service pole to the mast head on your home. This is called a three wire system. There are 2 hot legs…
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First, it's 277/480 and 120/240. But you're trying to relate what I call in the trade 'high voltage' 3 phase and 'low voltage' single phase. Let's make it easier, with 'low voltages' only: you want to know the difference between 120/208 (3 phase) and 120/240 (split single phase). First, look at yo…
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Yes, you can, and it won't burn out IF>>> the horsepower rating is the SAME. Pay attention to wiring and motor rotation.Also check the voltage: the motor voltage must be the same as the voltage between two hots of your 3 phase system. You will only use two hots as this is a single phase mot…
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Let do some easy mat. Load is 2.2 KW. 220 heater uses 10A (220X10 = 2200 W = 2.2 KW) 110 heaters use 22A (10X22 = 2200 W = 2.2 KW). Electricity companies charge per Kilowatt, so, theoretically, you pay the same. ------- You pay for the energy you use, and that is measured in kilowatt-hours. So i…
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wires, should never be 'buried', meaning they should never be lost in a wall, etc. you should cap wires off in a readily accessable box. if you can identify a wire, meaning you are absolutley sure a wire goes from a to b with no other connections; i use a method. first i tape a written tag on the wi…
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There are a couple of kinds of watt-hour meters: one is an electromechanical type (the one with the spinning wheel), and the other is a solid-state type. The solid-state types generally use a current transformer to measure the current produced in the current-carrying conductors, which means that the…
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If the meter was set for "current" (amps) and the leads were connected to the current input, you hope it will read 0. -- It should blow the fuse inside. If the meter is set for volts AC, it should read anywhere between 108 and 132 volts. If the meter is set for volts DC, it should read close to ze…
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No. Current does not come from a wall outlet unless the wall outlet is part of a complete circuit.
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Yes, circuit breakers can malfunction or die after a short or very long time. It could have had a minor manufacturing defect that took time to develop, such as a nick in a piece of metal. It could be that the lubricant inside spread and gummed up the works, that the spring lost tension, or any numbe…
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%REPLIES% Answer The voltage and ampacity can vary depending on the demand of the neighborhood. The voltage is typicaly 240 volt with the amperage capacity varying. Answer 7,200 volts goes to the transformer on the pole, amperage varies.
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Yes, as long as the circuit is not overloaded. Some kitchen appliances require a dedicated circuit depending on your local code. In my area the following require a dedicated circuit. Dish washer, refrigerator, microwave, garbage disposal, stove, and 2 separate dedicated circuits for all the rest of …
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The amperage flowing through a wire is directly related to the load placed on the circuit, and has nothing to do with wire size, except that a larger wire will carry more amperage. Increasing wire size will not lower amperage but will allow the circuit to carry more amperage if the breaker is also i…
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You never switch a neutral wire, only hots. hooking both hot and neutral to the same switch will result in a short when the swith is turned on.
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Yes as long as you stay within your local code. Usually a combination of lights and receptacles cannot exceed ten total. Do not wire any light to a circuit that requires a dedicated circuit, such as a refrigerator, dishwasher, etc.
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you could possibly design a fix for it but it would be a lot of trouble. the American dryer has internal components that run off 110v and that 110v is available from the three wire 220v circuit in the typical usa residence. this is because of the third wire, the neutral. the Korean 220 would be 2 wi…
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Definetely, in 23 yrs I have never had a case that would allow the wire/breaker to remain.
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Three-phase motors will run on single-phase power. What they WON'T do is start. There is no easy way to re-wire such a large motor to run on a single phase. Properly sized capacitors and a special relay is sometimes used on sewage lift stations (poopie stations is what we call them) to run the 3-ph…
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The physical internal windings between single phase and three phase motors makes this an impossibility That being said money can make anything happen. Depending on the amount of money you want to spend to make this happen there is a device on the market called a VFD ( Variable Frequency Drive). On t…
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Yes. Five 20 amp breakers would be 100 amps. It doesn't work that way. The load placed on this box at any given time cannot exceed 100 amps. You can put as many breakers as it will hold.
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Not necessarily, you may have a genuine fault on the circuit that needs attention...First thing to do is unplug and disconnect everything on that circuit and try again. If it then resets properly, one of the items you've disconnected is faulty.With the trip reset (power on), plug in each item one by…
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for countries in Europe and other world areas running a 50 Hz supply service. UK household AC power mains voltage is now 230V (previously it was 240V) 50 Hz. From a 415 volt 3-phase incoming supply you will get this voltage between any ONE line and the Neutral. Between any two lines you will get 4…
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Not legally if one wanted to do the modifications themselves. All sorts of liability issues involved including would your property insurance cover damage caused by a non-UL listed device.Perhaps a manufacturer has made a UL listed 240 volt dimmer. Check the major electrical device manufacturers webs…
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Could you clarify the question please.   You can't just upgrade the breaker. Its calculated on wire size and other things. You'll have to run different wire if you want to up your amps.
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Is everything on that circuit breaker not working? Breakers will go bad sometimes.Get yourself an inexpensive receptacle tester (~$4.00 at hardware stores) and test each outlet. It looks like a plug with 3-4 lights on the end. It will diagnose simple problems (no hot, no ground, no neutral, reversed…
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Have the utiliy company diconnect the power.Good advice except they will probably cut your drops, and you will be without power for an extended period, especially if they are busy. Call a qualified electrician, they will most likely be able to give you some options, and prices over the phone at no c…
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A vacuum breaker is a mechnical device used to avoid backflow or a negative pressure in a plumbing system. It typically consists of an air valve with a spring holding it closed. When the pressure within the system is positive, the valve remains closed. When the pressure is negative (less than atmo…
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It works fine, maybe not quite as well, but it is so much cheaper it is worth it.  Not So Fastis correct, but not that easy. R-134 and R-11 are NOT compatable. In order to modify, you must retrofit or replace service ports (hi and low side)to R-134 fittings. Next, you need to absolutely vacate…
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Answer The switch on the back is the switch for the power supply only. The computer boots from the main power switch on the front. This particular method of switching was introduced with the ATX power supplies.
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Is sure can! Your hormones are usually all over the map just before you start your periods and even during. Usually blemishes can break-out during this time.You don't have to spend a bundle to get a regiment of good skin care. If you have an oily complexion then buy products like Ponds/Nutrigena/etc…
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I suppose you could somehow increase the amperage from the battery to make the motor spin faster but it would probably burn out. Of, if there is some sort of gear drive you could put a larger gear on the motor and smaller one on the wheel but then you would lose power and may have to push it to get …
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Answer phosphorescent is glowing in the dark;reusing old light it has stored, like a glow in the dark keychain fluorescent is something that glows when energy is applied to it, such as the fluorescent lightbulb Answer As the name implies, phosphorescent comes from the element phosphorus. Man…
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Use a 3 pole breaker. The the wire size depends on motor amperage (or mca, which is minimum circuit ampacity). Normally in a house (dry conditions) use Lumex. <><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed elec…
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Answer for USA, Canada and countries running a 60 Hz power supply service. Not exactly. Breakers trip because the current exceeds the rating of that breaker. In other words....you're plugging too much into that circuit. And the wire can only safely handle a certain amount of current; so you c…
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Measuring No-Load In theory the no-load current of a transformer is zero. But in practice there is iron loss and core loss in the transformer, so there is power loss. Connect an ammeter in series with the stabilizer to measure the no-load current. Check your energy meter at no-load to see how much p…
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Answer for USA, Canada and countries using similar 60Hz mains supplies 240 Volts uses both phases of the incoming service (each at 120 Volts and 180 degrees out of phase). Since the load is "balanced" there is no need for a separate "return" (when one phase is off the other is on). THAT IS WRONG…
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Answer for USA, Canada and countries running a 60 Hz supply service. Buy a new 4 plug cord for the dryer and hook its ground wire up to the drier and hook red to red, black to black, white to white. Also make sure you remove the copper bonding strap between the white wire terminal and the dryer met…
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Change the 6 volt generator to a 12 volt alternator. Replace the starter & battery with a 12 volt. Replace every single bulb on the vehicle with a 12 volt bulb. You may also need to replace the coil. Also replace any electronic devices designed for 6 volts with ones designed for 12 volts.
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Answer It's located in the fuse box under the steering column- The wiper fuse is on the bottom center of fuse box. The fuse is silver made of aluminum and oblong 1/2" long. It's a dealer item only! The above answer is spot on for Jeep Cherokees too. The front wipers on my 1989 Jeep Cherokee Lare…
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Basically the movement of the speaker is the cause of the stereo (mono speakers) making the noise via induction. The Induction is the result of controlled oscillation of electrical current. A speaker is essentially an air pump. I like to say the bigger the pump the bigger the sound!!! A driver …
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I found a web site that explains how to do it: (1st link) It seems to make sense, but I have not tried it yet. That is for single phase induction motor here is for three phase motor (2nd link) I tested both links and it works perfectly.
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Answer lower gears you can also add an new intake which will give your 10-20 more horse powers
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Answer Yes you can BUT because you asked this question you should have a pro show you how to do it. Just to give you a worst case example, transformers work in both directions so if you feed the "city" with 220v your neighbors will enjoy your power until your generator burns up. Maybe 2-3 seconds! …
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if they are the the same transmission you can, but if you are going from a 4L60e to a 700r you need to modify your tourqe converter Locke up connector. if you look in Summit or Jegs catalogs, they carry adaptors ect,
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Answer kVA is the unit for apparent power. Apparent power consists of active and reactive power. Active power is the share of the apparent power which transmits energy from the source (generator) to the user. Reactive power is the share of the apparent power which represents a useless oscillation…
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Answer This question makes no sense. Please clarify and check your terminology. <<>> With 15 HP of power it would be worth having a capacitor bank to correct the power factor if: (i) your load contains a large percentage of appliances with a poor power factor e.g. induction motors …
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Answer TTL is less sensitive to static-discharge failure and less expensive. It is also faster. Answer There is a condition called "latch up" that can happen with CMOS circuits if an overvoltage is applied during operation, so you have to design the input/output buffers to suit the operating …
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An ampere is the actual amount of current flowing. See the Related Questions links for more information.
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Answer 12 guage wire israted for 20 amps and 10 guage is rated for thirty amps! 12 gauge is what is required, as it is rated for 20 amps. 10 gauge is rated for 30 and will be more then enough. Oversizing wire in your case isn't necessary. The thicker 10 gauge wire is harder to work with and wil…
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In electrical circuits series and parallel are two basic ways of wiring components. The naming comes after the method of attaching components, i.e. one after the other, or next to each other. As a demonstration, consider a very simple circuit consisting of two light bulbs and one 9V battery. If a wi…
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Voltage can be measured using the difference between the potentiel between two ends of wire or by using a volt-meter.You can easily measure volt by volt or multimeter but remember voltage always measure across the components but in parallel
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Probably not. The average dryer will pull 25amps.
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It's mounted on the engine's base, where the gearbox conects with the engine. if you know where the clutch disk is you should see the starter motor next to it.
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Your hamster could have got a bad sprain or a bad bruise. Feel around her leg and if you feel a broken bone, bring it to the vet. Only the vet can deal with tiny broken bones. If you don't feel anything broken, then the only answer could be a sprain or bruise. The most common reason is the wheel. If…
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Answer Hi-pot and megger tests are common to check the insulation on transformers, motors, refrigeration compressors, etc. They help check the condition of equipment to avoid a future falure. High votage test are conducted in current transformers by shorting the seconday and earth,can apply 3 ti…
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Ignition Amplifier? If you mean the Ignition Amplifier - it's a small rectangular Electronic part attached to the inner wing behind the battery - Bosch Part - about �50 to replace, they seem to go wrong at around 10/14 years - easy plug in replacement but use the heat sink conducting paste supp…
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it convers 12 volts into 50,000 volts Coil in electronics means wire wrap around some media the get different uses in applications. The above answer only pertains to coil on a car I suppose It is part of the ignition system. in older cars, it is a single unit that is about the size of a coke can. I…
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Answer 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 neut…
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Having gone through this same problem, No Help From Two different dealer ships, I was able to identify the problem and correct it quite easily. It appears the system, climate control, must have sufficient coolant to operate. I initially added a can of coolant and noticed no change, same as describe…
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Answer for USA, Canada and countries using similar 60Hz household electricity supplies If the socket outlet or plug-point is part of the house wiring and is 4-prong (4-wire is the proper term) then you MUST purchase a 4-wire cord and plug for the appliance and change it out. Most home stores (Lowe…
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Code 51 also refers to the throttle position sensor. You need to test the sensor - a factory repair manual will give the procedure and specs for testing.
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Walter Jones with the 1970 raiders
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You wouldn't want to. The Watts are the reason why. If you needed to power 2000 watts worth of appliances and you have a 120v system, you'd need a little under 17 amps to do it. A relatively thin 12-gauge wire will handle that much power. To power the same load with 12v current, you need 170 amps--a…
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Answer 1 piece rear main seal and the mounting location for the fuel pump is blocked off. May have bosses cast in lifter vally for hydrolic roller cam on the newer block
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