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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
This is a form of corrosion sometimes found on wiring or in the outlets. You need to have a licensed electrician replace the receptacles and to inspect the wiring to see if it may also need to be replaced. Either turn off the breaker or pull the fuse that supplies power to this room until it is repaired.
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Sounds like mold new one on me.
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This suggests to me that the wall holding the outlets is damp - from rising damp, roof or window-frame leaks for example.
Always be sure to switch off the breakers at the main panel before you attempt to do any work on any mains power circuit.
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Why would lights and TV come on without anyone flipping the switch?
Having the surge protector should not affect individual circuits. It sounds more like to me you have a bad neutral somewhere. By that I mean a wire is loose. So say the light switch or TV is left on and the bad connection is currently open, neither work. So the wind or gremlins in your house do their work and the next thing you know their on because the circuit is now making through this poor connection. If this is the case, this is a bad deal ok. You should have this looked at by a qualified electrician. Now, there is something else it could be, it's called a switch feeder. It could be that somewhere else one of the kids turned on a light switch and poof, other stuff turns on. If this is the case, it's simply a matter of moving a wire from the switched side of the offending switch to the fed side. You can test this by making sure the light you want to come on is in the on position and then walking around the adjacent rooms and flicking on switches. You know, if the boys loosed some neutrals at your panel board when they were trying to find a spot for their surge protector, that would be the bad neutral I was talking about. If you just recently had it done, call them back and tell them what's going on. It will be as simple as removing the panel cover, re-tightening the screws on all the whites. You can do it yourself if you're brave. Just turn off the main and carefully tighten only the screws on the neutral/white bar. There are still places in a de-energized panel that can beat up on you, becareful and good luck.
Andy
AnswerWe had a similar problem several years ago. When we called an electrician to trouble shoot for us we found out that some of our aged "Aluminum wiring" was loose at the panel box internal connections.Some of the connections were dark with evidence of melting & burning. Very Dangerous !! Apparently when aluminum heats up it will shut-off the power, after it cools the power is restored..therefore some lights an the TV were turning off & on on their own.. A sign that there was trouble brewing. We had the electrical panel upgraded & replaced. Eventually over the past few years, we had all the aluminum removed and replaced with copper wiring. No further problems.Is a breaker broken or blown if it will not stay in the off position?
there was probably a hot wire in that mess in that box and you just mistied them when you installed the switch are you sure that was a ground and not a hot going somewhere else
Why would there be no power to a switch?
There could be several reasons why there is no power to a switch, such as a tripped circuit breaker, a disconnected wire, a faulty switch, or a problem with the power supply to the switch. It is important to check the circuit breaker, test the wiring, and inspect the switch to determine the exact cause of the issue.
What are the disadvantages of electricity if it is not handled properly?
If electricity is not handled properly, it can result in electric shock or electrocution, which can cause serious injury or even death. Improper handling of electricity can also lead to electrical fires, damaging property and endangering lives. Additionally, mishandling electricity can result in electrical surges or damage to electrical appliances and devices.
Pictorial: pertaining to or consisting of pictures; "pictorial perspective"; "pictorial records"
Media: In the arts, media (plural of medium) are the materials and techniques used by an artist to produce a work.
So you might just say media containing pictures...
Hope this helps first answer :)
Where can you find answers to tpc training systems tests?
In the training manual. One has to read it and possibly reread it, highlight it, take notes on it.
Where can you download a john deere JS30 wiring schematic?
where can I get a john deere 4300 wiring diagram
How do you identify start and run windings of a motor?
The run winding of a single phase capacitor start motor has a lower resistance than the start winding.
What do you do if your cell phone screen has gone blue?
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 frezzer if water damanged if worked for me.
Why is a fiber optic cable connection faster than a twisted pair cable connection?
In the twisted pair cable connection, the communication occurs over wires which offer resistance that make the connection slow. However, the fiber optic connection uses cylindrical glass that does not have any resistance making it the fastest connection channel.
When talking about refrigeration, a ton is a unit of power. To quote wikipedia:
"In North America, a standard ton of refrigeration is 12,000 BTU/h = 200 BTU/min ≈ 3,517 W. This is approximately the power required to melt one short ton (2,000 lb) of ice at 0 °C in 24 hours, thus representing the delivery of 1 ton of ice per day." (http://en.wikipedia.org/wiki/Ton)
k is 1000
V is volts
A is amps
basic algebra kVA = (V * A)/1000
120 Volt with 20 Amp would be: (120 * 20)/1000 = 2.4 kVA
What does t1 stand for in electrical terms?
On a schematic for an electronic circuit it usually means a transformer. T1 is the 1st transformer, T2 is the second etc. Some ferrite core wire wound inductors with more than one winding may be designated as T1.
What DMV voltage range do you use to measure house current voltage 110V or 120V?
You must set the range so that the maximum value is greater than the conventional voltage levels in your house. Like, in the United States, the common voltage level is 120 volts RMS, although many homes are equipped with 240-volt service, to accommodate certain appliances, like clothes dryers. (The 240-volt service is really two 120-volt legs.) It's a good idea to set the range higher than expected initially.
Where is the heating element in a dryer?
If the element has failed you will still have 240V going to the element itself: it just won't be causing the element to heat up.
Make sure the dryer is unplugged!
Then take the back off the dryer and pull the element out - it's usually held by just a few screws.
BEFORE YOU UN-CLIP THE WIRES FROM THE ELEMENT write down which wires for the element go where. The wires have clips that will slide right off the element.
Take it to your local hardware or appliance store with the dryer's make, model number and serial number. (That information can be copied from the appliance's rating plate which is may be on the back panel and/or may be fixed just inside the front door.)
Buy a new element which is an exact replacement for the old one and put it back into the dryer in the reverse order that you took out the old one.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Why is a plug live wire brown?
I've been trying to find a satisfactory answer to this through a casual search on the web and nothing jumps out at me immediately which amazes me!
What idiot sitting on some "standards committee" somewhere thought that brown would be a good colour for a live wire?
For starters brown is the colour of earth, so anyone knowing nothing about electricity would assume that brown is earth and that live must be that fancy coloured green and yellow wire with fatal consequences no doubt.
Nature gives us natural warning and danger colours and they are typically vivid colours or unnatural contrasts - such as green and yellow in snakes! Red is also a classic danger colour and means "stop" on traffic lights etc. So...why is the live wire not red ?
From my dim and distant past I can vaguely recall messing around with plugs and wires and in those days I remember the live wire in the UK as being red. So...what caused the change? I suspect some crazy dictate from faceless bureaucrats at the so called European Union lol.
The only reason I can think of for this madness is that major circuits which feed directly into the mains, tend to have live as red and neutral as black (earth is green or green and yellow I think). As a means of distinguishing between the two, brown was chosen as a "shade" of red to mean live - though why not choose vivid orange? Why do we need to distinguish between the two types of circuits anyway?
Unfortunately, I suspect that the real answer lies in some legal case where an idiot was working in building somewhere and mixed up the old style red live of a lighting circuit with a red live straight from the mains and frizzled themselves to death. The family sued because they were short of cash and the legal precendent was set that wiring should be re-labeled in colour (because - displaying warning signs near every electrical outlet was deemed unpractical...doh!)
CommentI think you're probably correct in assuming that it was dreamt up by some idiot in the European Union of Socialist Republics!
How can definitely we say a capacitor is faulty?
You need a multimeter that is capable of testing micro Farads (uF). The capacitor is normally stamped with this rating. Should get a reading within +/- 5% of the rated value. Some Caps. are polarity sensitive so make sure your +/- leads from your meter are correct
What is a ground loop isolator?
Ground loop isolators are used to break the DC circuit path for the audio shield ground circuit. It removes ground loops from the system, which are unwanted.
What does 24vac 50va equal to in amps?
In 50 VA the V stands for volts and the A is for amps.
Hence the formula you are looking for is 50/240 = Amps.
Will a 208 volt rated appliance work on a 240 volt feed?
No, there is over a 15% difference in voltage supplies. This means that the current supplied to the 208 volt equipment will also be 15% higher. Take a 4000 watt range. I = W/E 4000/240 = 16.6 amps. 4000/208 = 19.2 amps. A 240 volt appliance will run on 208 volts but as you can see from above equation the range elements will not get as hot at the lower voltage.
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To get a the answer you have to reckon with the resistance of the appliance. A 4000 watt appliance running on 208 volts takes 19.2 amps, so from Ohm's Law R = E/I, its resistance must be 208/19.2 = 10.83 ohms.
Again using Ohm's Law I = E/R, the current that resistance takes at 240 volts must be 240/10.83 = 22.16 amps. So the power drawn will be 22.16 x 240 = 5,318 watts.
If it is a cooking ring or a heater, that power may cause the temperature to rise so much that its element could glow dangerously white hot and, at best, it may then melt or burn away with lots of smoke and heat. If it was some other appliance it may well overheat so much that it simply catches on fire. So the real risk here is that, if left unattended, the higher voltage could cause a house fire.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What does L1 L2 and N mean in electrical terms?
L1 and L2 stand for "Line 1 and Line 2". These are the two incoming hot legs of a single phase, 220V electrical supply as is typical for residences.
The N stands for the neutral or grounded conductor. This is the white wire in a residential system.
Since L in electricity stands for inductance, L1 and L2 could also possibly be inductor 1 and inductor 2. And the N in electricity means Number of Turns (of the copper wire into a coil). Therefore, it could be about residential wiring or inductors.
Why does one end of the battery have a negative symbol on it?
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 and when they come together with a conductor(wire) it creates a current which does the "work" for you. The voltage of the battery pretty much lets you know how strongly the battery wants to create equality between each side thus more current.
How much voltage does it take to injure someone?
That is difficult to answer because there is no fixed answer. As an experiment put both terminals of a 9V battery on you tongue. It will not hurt you but you will surely feel it. Now put your thumb across the terminals of that same battery. Two things should now be obvious to you: 1) that even low voltages can "hurt" you under the right conditions, and 2) voltage is not the only factor that determines how harmful.
Which is the positive wire between solid black and black with white stripe?
White is neutral in home wiring. Red is sometimes used in 3-way switches and dimmer applications, so it is likely red is hot in your application if it pertains to home wiring. The term positive would just apply to DC wiring since AC goes positive and negative. For example your car battery has Red as Positive and Black as Negative.
