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Wire is the transition material used to carry the electric current; the switch is the controller of that current.
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∙ 15y ago
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What is happening when you turn an electric circuit off?
When you switch off an electrical circuit you tend to create a 'break' in the circuit, preventing the electric current to flow around the circuit, this can be caused by a simple switch or a break in the circuit, e.g a disconnected wire.
Is it safe to go from 12-3 wire to a 14-2 wire in the middle of a switch leg?
No. The wire size is dependent on the circuit protection. If the circuit uses a 20 amp breaker you need to run 12 AWG wire on all devices connected to that circuit.
Can you mix two hot wires and neutral in same shut-off switch?
Yes two "hot" wires and a neutral can enter into a switch box. This is done on occasions where a three wire enters a switch box, drops off one circuit for the lighting and the other "hot" wire carries on to feed a receptacle circuit.
What type of prewire for a ceiling fan light?
The pre wire for a ceiling fan light should be made with a three wire cable. This cable will have a red, black, and white wire as main conductors. This cable will also have a bare ground wire. This wire should be strung between a two gang switch box to the fixture junction box. This pre wire allows the supply to be either fed to the two gang box. From the two gang switch junction box, one side will be used for the light in the fixture and the other side of the switch junction box, itwill be used for the fan portionin the fixture.
Why dining room lights go on and off intermittently?
Check for loose wiring at the light itself and also at the light switch. There can also be a loose wire anywhere in the circuit supplying power to that light switch. Start at the light itself and work backwards in the circuit until you find the loose wire.
What is the cable diameter of a twin copper wire?
There isn't a specific diameter. The thicker the wire the more current it can convey. This diameter will be part of your calculations for your circuit.
What is close circuit?
Close circuit is a complete circuit of battery wire bulb and a switch
Can one use 1 circuit of a 3 wire plus ground 2 circuit cable as a GFI circuit with the other as a lighting circuit?
A GFCI can not be used on a three wire branch circuit. It has to be on a single two wire circuit.
Can you wire a light switch with only one 14-2 wire?
If the power feed goes directly to a fixture, or if you are wishing to switch a receptacle that is not now switched, you can us a 14-2 NM cable to install a "switch loop", provided the circuit is no larger than 15 amps. To do this, after running the 14-2 NM cable, connect the WHITE conductor of the 14-2 to the hot wire. At the switch, connect the black and white conductors to the switch terminals. At the fixture or receptacle, the black wire of the 14-2 NM cable now becomes your switch leg and is connected to the black conductor of the fixture or brass terminal of the receptacle. The NEC (for the United States) requires that the switch be fed with the white wire and the black wire be used as your switch leg.
What are the basic parts of a circuit?
Switch Light Wire battery
When the switch is closed how does the broken wire affect the heating element in circuit A?
If there's a broken wire then the circuit is no longer closed. It's open.
What are the four features required to construct a working simple circuit?
power source, wire, switch, end fixture. Simplest circuit would be a power source and a heating element. No wire or switch needed.
How do you power an outlet from a one wire light switch on same wall?
The one wire carries the electricity or voltage. The lamp is grounded completing the circuit. You don't. The light switch is only half the circuit, a lamp has nothing to ground to so it can not work. If the wire to the switch is 3 wire, the bare wire would complete the circuit and power the plug, but it would not be up to code and could present a fire hazzard.
When the main switch opf a house circuit is put off what does it disconnect?
Live wire and the neutral wire
What is a red wire switch leg?
Red is the alternate hot leg in a 2 way switch circuit
How do you wire a cable with a black wire a brown wire grey wire and earth wire to a light switch in my car which has 3 holes 1 for single switch and 1 for a doubleswitch?
See discuss question below.
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).
