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Black is hot and white is neutral.
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∙ 11y ago
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Why you get an electric shock if you touch live and neutral wire?
Because there is a potential difference between the live and neutral wires.
What are the three wires of track lighting?
Another homework question? The wires could be Hot or Live, Neutral and Ground.
Where does the switched live go in a ceiling light?
To the black wire on the fixture.
What is the blue wire for in a three pin plug?
In the UK Brown is the live, blue is the neutral and green/yellow is the earth. The live and neutral are the two wires that normally carry the current.
Can you replace wall light switch with a PIR switch if Wall switch has usual live neutral and earth but PIR has live in live out and neutral.?
An ordinary light switch does NOT have any neutral -- it only switches the live wire. Some installers use the white wire as a "switched" wire to the light fixture, where the power cable went to the light and a separate cable went to the switch. Technically, the white wire should have been marked with red or black tape at each end, to signify it is not neutral - it is either live or off. In that case, you would not be able to use a PIR switch because there is no neutral, which is necessary to provide power to the electronic circuit in the PIR. You would need to rewire the switch with a new power cable from the branch circuit. The you have the live and neutral wires in the outlet box, connect them to the PIR, and run the pigtailed neutral and the switched live (and pigtailed ground) to the light fixture (where you would disconnect the other power cable completely and cap the ends separately).
If both wires for a ceiling light fixture are black how do you tell which is the live wire and which is neutral?
If both wires are black, the one that connects to your white wire is the one that should have little writing on it. Black to the plain black wire, white to the wire with writing.
Why you get an electric shock if you touch live and neutral wire?
Because there is a potential difference between the live and neutral wires.
Why neutral is earthed always?
The two wires carrying a standard ac power supply are the live and the neutral. By convention one of the two wires is earthed at the transformer providing the supply. That then becomes the neutral and the other wire is the live.
What does the letter L and N on wires stand for?
Live & Neutral
How do you install a new ventilation fan on a second light switch using the power from the existing light switch?
you probably can't, you need a neutral and a live wire to make a fan work. switches normally only have live wires.
What are the three wires of track lighting?
Another homework question? The wires could be Hot or Live, Neutral and Ground.
Why three wires on battery charger?
If you mean the wires in the battery charger's household AC power cord the three wires are "Hot" or "Live", "Neutral", "Ground".
Where does the switched live go in a ceiling light?
To the black wire on the fixture.
What is the blue wire for in a three pin plug?
In the UK Brown is the live, blue is the neutral and green/yellow is the earth. The live and neutral are the two wires that normally carry the current.
Can you replace wall light switch with a PIR switch if Wall switch has usual live neutral and earth but PIR has live in live out and neutral.?
An ordinary light switch does NOT have any neutral -- it only switches the live wire. Some installers use the white wire as a "switched" wire to the light fixture, where the power cable went to the light and a separate cable went to the switch. Technically, the white wire should have been marked with red or black tape at each end, to signify it is not neutral - it is either live or off. In that case, you would not be able to use a PIR switch because there is no neutral, which is necessary to provide power to the electronic circuit in the PIR. You would need to rewire the switch with a new power cable from the branch circuit. The you have the live and neutral wires in the outlet box, connect them to the PIR, and run the pigtailed neutral and the switched live (and pigtailed ground) to the light fixture (where you would disconnect the other power cable completely and cap the ends separately).
What will happen if you get the main power from two live wires instead of a live wire and a neutral wire?
207 volts ac
What happens when you connect the wrong wire to the live in a three wire ceiling light?
If you connect the ground wire to the hot wire it will trip the breaker. If you get the white and black wires reversed it will still work but does not meet code.
