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What does it mean when the circuit tester light does not come on when touching the black and white wires?
Wiki User
∙ 11y ago
It could mean two things. The first thing would be that the tester is not working. Test on a circuit that you know to be energized. The second thing causing a tester not to light is that the circuit under test is de energized.
When using these types of testers always test the black to white wire and then black to ground wire. If the tester indicates there is a voltage to ground and not the white then the neutral white wire is open somewhere in the circuit.
Wiki User
∙ 11y ago
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Is it normal for tester to show hot on a light switch with it in the off position and no power going to the light it controls?
Yes. Even with no power to the light, there is still power to the switch. To power off the switch you usually need to open a circuit breaker.
What to do with the white wire in track light with black green and white wires if the house does not have a white one?
The white is neutral. The house does have a neutral wire even though it may be black. One of those black wires is the neutral and the other is the hot wire. You will have to determine which is hot and which is neutral. You can easily do this with a voltage tester. The wire that lights the tester is the hot. When you wire the light simply wire the hot to hot, and the white and green to the other wire.
How should you proceed in order to identify the terminals of a wall outlet?
You have to do what we call in the trade "ring out the line". Shut the circuit off at the breaker. Most likely 2 of the wires will be black and white and are the supply from house panel. Once you establish which are the hot pair, its time to ring or trace the other four. The most likely scenario will be that they feed another wall outlet. Check other outlets in the area to see if their voltage is off also. You will need a continuity tester from this point on. If you find other outlets off, open them up to access the wires. Go back to your original 4 wires and pair them up, you should end up with two pairs of black and white cables. Wire nut these black and white wires of the cables ends together. Go to the other wall outlets and put the continuity tester across the black and white wires on the receptacle If the tester shows continuity then you have the other end of the unknown cable pair. The circuit could also include light fixtures in the circuit and the unknown wires could go to a light switch before continuing on to the fixture, so check those wires also for continuity.
Have 3 lights Power to light 1 Need to connect light 2 then light 3 then down to single pole switch How do you wire?
You would wire the switch to the first light. Code says to break the black or power side of the circuit. Connect the white to the light. Take the black down to the switch on the black wire and back to the light on the white. This is a line of wire from the light to the switch. From the first light, take the white and the return white from the switch to the second with another run of wire. This will be regular black white with ground. White to white and at the first light the return line from the switch is white but hook to the black to the second light. Second light to third just continues the two wires. Black to black, white to white. I think this is clear enough to follow. If not, ask again.
How do you pull 1 of 6 lights off a 3-way switch and add a single switch for that 1 fixture?
One 1,000 watt light will push a typical circuit breaker close to its limit. Six such lights will require wiring and circuit breakers to handle the load. Figure one circuit breaker per light. That means not only six switches but six switches, each on a different circuit breaker. Don't overload the wiring or it could cause a fire.
What does green light mean on circuit tester?
it works
How do you test a electrical circuit?
use a tester. its like a screwdriver with a little light on top that should light up if a current passes through it. test at various points to ensure current reaches all parts of the circuit
Is it normal for tester to show hot on a light switch with it in the off position and no power going to the light it controls?
Yes. Even with no power to the light, there is still power to the switch. To power off the switch you usually need to open a circuit breaker.
How can it be determined if an element will conduct electricity or not?
If you want to physically do it, connect up a simple circuit with wires, a battery and a small bulb. Put the object in the circuit (touching the wires) - if the bulb light, its a conductor.
What causes low beam lights to come on when brakes are applied on a Honda?
Check for a bad ground in brake light circuit Check for a bad stop light bulb where both filaments (double filamented bulbs) are touching back feeding circuit
What is a circuit breaker tester?
The simplest type is just two wires with a small light in the handle. Touch one lead to a ground and the other to the positive you are checking. If there is power in the contact, the light will come on. It should be around $4.
If 2 batteries in a simple circuit are arranged neg to neg terminals touching will the bulb light?
If you put two batteries of the same voltage with like terminals touching each other in series the equal, but opposite voltages will cancel each other and the light bulb will not light, because there is no current flowing through it.
What are the lenses found in a light microscope?
the zoom the tester the power and the light
What is the reason for glowing of light in electric tester?
A small current is flowing through the light. In an insulated screwdriver with a neon tester, you put your thumb on the top and touch the other end on to the wire. It's best to make sure your other hand is behind your back and that you are not touching anything else. A live wire will light the neon. But if the neon does not light, that does not mean the wire is safe to touch. The power must be turned off back at the main switch before anything is touched.
What are the lenses found in a light microscope called?
the zoom the tester the power and the light
What to do with the white wire in track light with black green and white wires if the house does not have a white one?
The white is neutral. The house does have a neutral wire even though it may be black. One of those black wires is the neutral and the other is the hot wire. You will have to determine which is hot and which is neutral. You can easily do this with a voltage tester. The wire that lights the tester is the hot. When you wire the light simply wire the hot to hot, and the white and green to the other wire.
Why tester glows in phase but not in neutral?
A mains tester works because the potential difference between the live and Earth makes a very small (imperceptible) current flow through the tester and our body to Earth. This current is just enough to light the lamp / Neon. When you stick it in the Neutral socket, the potential difference (just a volt or two, usually) is not enough to give sufficient current to light the neon.When the tester light glows, it mean electrons flow like,from live terminal > tester > body > floor & walls of building > inside the earth>goes back to the generator, via earth or neutral conductor (Please note that somewhere, Neutral and Earth are connected together so we have, in effect, a huge loop of circuit.) Above description is for AC supply only ( path complete thorough earth or nutral to generator neutral), however please note the fhilosophy is not applicable for DC supply where - V is in floting condition (not grounded or earthed) so due to un completation of that circuit tester light will not glow. THE_DABI@REDIFFMAIL.COM
