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Why does not tester light up when it is touched to neutral of 3 pin socket?
Wiki User
∙ 13y ago
Because the neutral is simply the return path in a complete circuit. It doesn't carry any power - that's only found in the live wire.
Wiki User
∙ 13y ago
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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
What is an Edison screw socket?
The screw socket into which an ordinary light bulb is inserted.
Why your new light fixtures dont come on when you have 120V at the socket?
My first suspicion is you have a loose or disconnected neutral. TURN THE BREAKER OFF WHEN CHECKING THE CONNECTION. To include all points, even the obvious, make sure you have changed the lamps to known working lamps from another fixture. How do you know it has 120 volts at the socket? If you tested it with a voltage tester or a multimeter, which wires were you connected to? In order to troubleshoot you need to make three measurements, at the BOXif wall or ceiling mounted or RECEPTACLE if plugged in with a cord, not the fixture socket the lamp screws into. Hot to ground (volts AC) Should be 120 volts nominal. This can vary from about 110-130v. Hot to neutral (volts AC) Should be 120 volts nominal. Neutral to Ground (volts AC) Should be 0 volts. These wires are electrically joined at your main panel. If you have 120v hot to neutral, your circuit is working properly. Any problem will lie in the fixture or the connections to the fixture. If you do not have 120v to neutral but you do have 120v hot to ground, your neutral is not connected. TURN THE BREAKER OFF and check the connection. If you do not have 120v to neutral or120v to ground, your hot is not connected. TURN THE BREAKER OFF and check the connection. If you have anything other than 0 volts neutral to ground, your fixture connection may be okay, but your neutral is not connected properly going back to the main panel. This is a dangerous situation, and it can result in fire over time. In this case have an electrician inspect the situation immediately!
How can i find out if the live wires i found in my wall are for a light switch or an outlet?
Use a voltage tester held next to the wire. Turn the switch off. If the tester stops beeping then the wires are on that switch.
Is it hazzardous to turn a light on and off by just loosening it from the socket?
Switching light on/off through loosening from socket is not advisable. Light bulb can reach at temperature between 200-260 degrees Celsius and it can be hazardous in physical contact.
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
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 is a light socket tested for problems?
Since the problem either lies in the light socket or in the power cable diagnosing the problem requires access to the connections. The most easiest method is using a continuity tester which has two electrodes attached to a digital meter.
Can you use the neutral in a plug socket for a neon in a light switch?
yes just make sure your not using too much amps...
What does it mean when the circuit tester light does not come on when touching the black and white wires?
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.
Where is hot on the light bulb base?
On an Edison screw (ES or SES) it is in the bottom of the socket not the sides where the lamp screws in that is the neutral connection. On a bayonet catch (BC or SBC) it is either of the two pins, the other being neutral.
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 does green light mean on circuit tester?
it works
What is one of the difference between light and photo?
1. light can not be touched but photo can be touched. 2. light is a form of energy but photo is not. 3. we can feel the light but not photo.
No jeep liberty passenger side brake light - changed bulb - checked plug with tester and power is present - but still no brake light - tried second new bulb and still no luck.?
double filament bulb installed incorrectly defective socket bad ground
