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Electrical Troubleshooting
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.
885 Questions
How do you replace a fan's light bulb?
It depends on the type of fan, whether it is a range hood, bathroom fan, or room ceiling fan. There are several ways they are mounted as explained below. Preferably the power to the fixture in question should be off.
1. If there are thumb screws near the cover (mainly on range hoods and some light only ceiling fixtures), you would remove them. Then you would unscrew the old bulb and screw in the new one. Then you would put the thumb screws back in.
2. This may be just for a light-only fixture, but if the fixture is recessed and the cover is almost completely flush with the ceiling, you would pry it from the ceiling. Then you would replace the bulb. Getting the reataining springs back in may be tricky, and you would need to protect your eyes from debris up in the ceiling.
3. With most bathroom fans that use a square acrylic light cover, you would press into each side and pull it loose. Then you would replace the bulb and snap the cover back on.
4. If you mean a standard ceiling fan, it depends. For most, you would simply unscrew the old bulb and screw a new one in. For others, there are retaining screws holding the globe on, and for a few, the globe unscrews.
5. For a few ceiling fans, you don't replace the bulb, but replace the entire lamp kit. To do that, you remove the 3 screws from the plate above the light kit to drop it down, then disconnect the wiring (cap off the wires from the fan until you are finished), remove the light kit from the plate by loosening the nut. Then follow the instructions with the new light kit and undo the previous steps to reassemble the lower part of the fan with the new light kit.
Re open the switch junction box after turning the power back off. If you can locate the wire that bring the voltage to the box make sure that this wire goes to the top of the switch. If it is tied into more black wires this could be receptacle circuits that are on all of the time. If this is the case, from this group add a pigtail from this group to the top of the switch. from the bottom of the switch find the wire that is going to the light. It is probably in the group that is tied together. Once found terminate this wire to the bottom of the switch. Put the breaker back on and try the switch.
Can a light bulb work on a DC voltage?
It can, but if you're wanting to run a 120v light bulb on DC, you'll need 120v DC to get the rated output. That's a lot of batteries. It's easier, and more sensible, to find a DC rated light bulb, such as an RV bulb.
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.
Well, as far as I know, there is no 'gas' A/C. The A/C will be electric, regardless of the type of heat used. Whether electric heat or gas heat would be more economical is really dependent on your electric and gas utility rates and the efficiency of the appliances involved.
Why do ceiling fan lights go out?
Without knowing some more facts, there could be several different answers to explain why a ceiling fan's lights "go out":
- someone has turned them off at the switch for the lights on the fan unit;
- the light bulbs are "dead" and need replacing because their filaments have broken;
- there is a fuse protecting the lighting circuit and it needs replacing because it blew from the surge of high current that sometimes happens when a light bulb "dies";
- there is a timer in the fan unit which turns the lights off after a certain period of time;
- the wiring from the switch to the light has become disconnected;
- the switch in the fan that controls the lights is broken and needs to be replaced...
What causes a crackling noise from an electric socket?
A crackling noise from a receptacle indicates an arc fault. It's the arc (electricity trying to jump across an air gap to return to its source) that you are hearing. There's most likely a loose connection on/in a receptacle. You should turn off the breaker for the circuit in question and consult a professional electrician. An arc fault can cause fire if uncorrected. ---- 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 power at 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.
How do you use a Five Function 12-Range Multimeter tester?
This is a very broad subject. It is best to find the instruction manual that is printed for the multimeter and study it while the meter is in front of you. This way you become familiar with the multiple operations.
Wiring diagram for a carrier heat pump airhandler model fa4anf036?
http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/fa4a-6pd.pdf
kVA stands for Kilo(means a thousand) Volt Amperes. It's a kind of capacity rating for how much electrical power something can either deliver or needs.
=== === Any socket outlets or wiring to pumps, etc must be protected by a GFCI, not only by the main circuit breaker on the house AC power supply panel.
Sounds like there is water somewhere in the circuit and that is causing the GFCI to keep tripping every time you press the RESET button. The GFCI is doing its job to protect you and your family from electrocution.
Turn off all power at the main panel and then check all wiring, junction boxes, outlets, etc. in the circuit for water. Every part of the circuit must be allowed to dry thoroughly before the GFCI will allow you to reset it. Then be sure to protect any connections in the circuit from getting any water spray or splashes in future.
Really this work should be done by a licensed electrician who will know exactly where to check and what to do to make your electric pool pump - and any socket outlets in the same circuit - safe to use in future.
Is the distance from the panel to the pool very far or long, A ground fault breaker is looking for a difference in potential the longer the distance the more sensitive they become. What you may have to do is put a ground fault outlet by the pump and put the wiring in a regular breaker. 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 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.
It sounds like the rotating tub has ceased and the motor is still trying to rotate the tub. The drive belt is spinning on the drive motor's pulley and creating heat and the burning smell. Don't try and use the washer any more until the tub bearing or its gearbox has been repaired. The drive belt rubbing on the pulley can generate enough heat that the belt might combust into flames.
Where do you put the transmission fluid in a 1989 Ford Econoline 454 Motor home?
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..........
What is the proper way to test a receptacle?
The simplest way to test a receptacle is to use a plug-in type receptacle tester. This tester indicates either proper operation or common miswirings of the receptacle. If the receptacle is a GFCI, there is a special type of plug-in tester that has a GFCI trip button on top. This tester indicates the same things as the other one. In addition, you can press the test button to create a small ground fault, which will trip a properly operating GFCI. ---- IF YOU'RE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do any work yourself, always turn off the power at 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.
Just means generated by water power can be found in powerplants and factories
Will a bad plug receptable cause other switches to stop working?
It could! If wired in series in a way that is commonly done, linking receptacles on a common circuit, this especially true with GFCI outlets, allowing one GFCI to protect all outlets down stream. However, it would be unusual to find another type of device wired in this way.
Regular receptacles have two screws on each side for the hot and neutral wires. A daisy chain of sorts is created when both blacks from two romex cables are connected to the two screws, and this continues down the wall to the next receptacle. Some problem with the receptacle or the wiring could cause a loss of power (or neutral) down the line. One that is obscure to the novice is the break -off tab near the screws. This is used when there is a switch controlling one of the out lets and the other is available as a standard outlet. If such an altered outlet is being reused, or one that some how was broken off, the two screws are no longer connected, and will not make the daisy chain as planned.
It is common practice that circuit is provided to an area in new construction, and by code only seven or sometimes eight devices are allowed to be connected. Most often this a room light, some receptacles in that room and possibly receptacles in a wall common to another room. Depending on the routing of the "home run"...the wire from the breaker and the distribution panel... this could be any junction box that is part of this circuit. Problems here can affect any other part! Considering the possibilities of remodeling, upgrading to ceiling fan ...it is hard to tell. If necessary you may have to figure out witch box has the "home run" feed, disconnecting all there and reconstructing the circuits until the problem is isolated.
I need brief notes about inside the star delta starter?
There are no insides of a star delta starter. The components consist of two three phase contactors joined on a common back plate with a mechanical interlock between them so as to prevent both contactors being able to pull in at the same time.
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There are two ways of wiring three phase electric, one is star and one is delta. You have to know which type to use because Delta will give you three time the power of the same power source connected in a star formation. So you could burn the coils on the motor out.
Also as well as the pattern (star or delta) there is the sequence and if this is wrong then the motor will go backwards.
You would really need to get someone qualified to look at it. Its not something that instructions can be given for over the internet unless you can say the make and model of both the generator and motor, then someone might be able to help you.
See related links
Bose Wave 110v to 220v converter?
The modifications fall into 4 categories. You may choose to make any or all of these modifications to suit your own needs.
1. Conversion of input voltage to receive 220-240VAC, instead of 110-120VAC
2. Conversion of Tuner - FM 50kHz spacing; AM 9kHz spacing
3. Conversion of de-emphasis from 75uS ( USA) to 50uS (EU)
4. Upgrade of the signal path capacitors.
A multimeter is an instrument used to check for AC or DC voltages, resistance and continuity of electrical components, and small amounts of current in circuits. This instrument will let you check to see if there is voltage present on a circuit.
On the inside of the heater cover, and within the documentation shipped with the heater, there should be a diagram of the control circuit. These heaters will not operate if the pump is off (pressure switch), if the "fireman" switch is off (a switch generally inside the pump timer that disables the heater about 15 minutes prior to turning off the pump), nor if both of two additional high temperature limit switches are activated (models will vary). The fact that the pilot is lit indicates that the pilot generator is OK. If you can turn the burner on by shorting the control circuit manually (using a jumper wire) the problem is in on of the safety limit switches, or in the thermostat itself. Good Hunting!
http://www.poolcenter.com/parts_heaters_laars_xe_pg1.htm
A pilot generator may have enough power to operate the pilot ,however not be sufficient to operate the main valve as well, this is quite common.
The way I test a millivolt system of any type is I have a AA battery holder from RadioShack with a positive and negative lead, I disconnect the pilot generators 2 leads and replace them with the AA batterys. The battery is 1.5v it wont hurt though, but if the gas valve wont open and you do get voltage to the gas valve terminals for the main valve, the valve is either bad or stuck, an amp draw will tell you if its trying to work or shorted perhaps if excessive.
There are a limit and on off and thermostat on this unit I believe as well .
What is the strength of current in each resistor of a series circuit?
The current in each resistor in a series circuit is the same. Kirchoff's Current Law states that the sum of the currents entering a node must add up to zero. The connection between two resistors in a series circuit is a node. The current entering the node from one resistor is equal to the current leaving the node into the next resistor.
