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One. A typical "two way" ON-OFF light switch is a Single Pole Single Throw (SPST) switch with two terminals. It is wired in series with the fixture: that is, the power circuit is routed from the breaker to one side of the switch. The other side of the switch is connected to the "phase" or "power" terminal of the fixture. In a 115VAC single phase circuit, the other terminal of the fixture is connected to neutral.
A "three way" switch circuit consists of two switches in different locations, each of which is a Single Pole Double Throw (SPDT) switch with three terminals. A typical use would have one switch at the top and the other at the bottom of a set of stairs. For the sake of clarity, we can label the "common" terminal on a SPDT switch the "C" terminal. This terminal is internally connected to one of the other two terminals, call them "A" and "B", depending of the position of the switch.
A three way switch is connected with the circuit breaker connected to the "C" terminal on either switch. Conductors connect the "A" terminal on one switch the the "A" terminal on the other switch and the "B" terminal on one switch the the "B" terminal on the other switch. The remaining "C" terminal is connected to the "phase" or "power" terminal of the fixture. The other terminal of the fixture is connected to neutral.
Note that, in either case, there is no neutral wire connected to the switch. Ground conductors do connect to the chassis of the switch box and the fixture, but they do not carry current and do not affect the operation of the circuit.
What else can I help you with?
How much power does a fluorescent fixture use with no tubes installed For example a switched on 8' fixture with a single tube with an old ballast.?
A fluorescent fixture with no tubes installed will still consume power, typically around 5-10 watts due to the ballast and other internal components. This power consumption is significantly lower compared to when the tubes are installed and the fixture is operating normally.
What are some examples of a tee joint in the electrical trade?
A tee joint in the electrical trade is a conduit fitting. It is used in conduit work where there needs to be a device connected into the main conduit run. An example of this is where a light switch needs to be installed into the conduit run. The main conduit run starts at the distribution panel and proceeds to a lighting fixture. On the way a switch is needed to operate the light fixture. In the main conduit run a tee fitting is installed so as to pick up the switch for the fixture. When the conduit system is complete the wire is then drawn in. The "hot" conductor is pulled to the tee fitting and then diverts to the switch box to pick up the switch and then back up the same conduit to the tee fitting and then on to the lighting fixture. Splices are not usually made in tee fittings.
Can you connect a wall switch and a light fixture to an existing light fixture?
If the question is, can I wire a switch to an existing light fixture (and I must assume that it's something like a pull-chain light fixture), the answer is yes.If the question is, "how do I wire a switch to an existing light fixture that has no external switch", the answer is, "in series".The attached web site gives simple instructions on how to wire a basic light switch to an existing light.See sources and related links below
How do you wire a 220 volts light?
The light is wired the same as any voltage fixture. Bring the source voltage to the fixture and connect it to the two fixture wires. If you want to control the off-on of the fixture take the source voltage to a switch first and then out of the switch to the light fixture.
You have three 3-way switches operating 3 ceiling lights you want each switch to operate each single light What do you do?
To have each switch operate a single light, a 3-way switch must be installed for each light. Each switch needs to be wired to its respective light, with one wire running between the switch and light fixture. This way, each switch will control the light it's connected to independently of the others.
How can I switch the light fixtures in my bathroom?
Switching a light fixture requires the following steps. First, remove the old fixture. Second, you must disconnect the wiring. Third, a junction box must be installed. Finally, a new fixture must be installed. Detailed instructions can be found here: http://www.diynetwork.com/how-to/replace-a-bathroom-light-fixture/index.html
How much power does a fluorescent fixture use with no tubes installed For example a switched on 8' fixture with a single tube with an old ballast.?
A fluorescent fixture with no tubes installed will still consume power, typically around 5-10 watts due to the ballast and other internal components. This power consumption is significantly lower compared to when the tubes are installed and the fixture is operating normally.
How to wire a 3-way switch for controlling a light fixture?
To wire a 3-way switch for controlling a light fixture, you will need to connect the wires from the power source to the common terminal of the first switch. Then, connect the traveler wires between the two switches. Finally, connect the wire from the light fixture to the common terminal of the second switch. This setup allows you to control the light fixture from two different switches.
Can you explain the concept of a switch loop diagram and how it is used in electrical wiring?
A switch loop diagram is a visual representation of how a switch is connected to a light fixture or electrical outlet. It shows the wiring path between the switch and the fixture. This diagram is used by electricians to understand and troubleshoot electrical circuits.
What are the differences between a single pole and a double pole light switch?
A single pole light switch controls one light fixture from one location, while a double pole light switch controls one light fixture from two locations.
Can you provide a three-way switch diagram for wiring a light fixture?
A three-way switch diagram for wiring a light fixture shows two switches controlling one light. The diagram includes the light fixture, two three-way switches, and the wiring connections between them.
What are some examples of a tee joint in the electrical trade?
A tee joint in the electrical trade is a conduit fitting. It is used in conduit work where there needs to be a device connected into the main conduit run. An example of this is where a light switch needs to be installed into the conduit run. The main conduit run starts at the distribution panel and proceeds to a lighting fixture. On the way a switch is needed to operate the light fixture. In the main conduit run a tee fitting is installed so as to pick up the switch for the fixture. When the conduit system is complete the wire is then drawn in. The "hot" conductor is pulled to the tee fitting and then diverts to the switch box to pick up the switch and then back up the same conduit to the tee fitting and then on to the lighting fixture. Splices are not usually made in tee fittings.
Can you connect a wall switch and a light fixture to an existing light fixture?
If the question is, can I wire a switch to an existing light fixture (and I must assume that it's something like a pull-chain light fixture), the answer is yes.If the question is, "how do I wire a switch to an existing light fixture that has no external switch", the answer is, "in series".The attached web site gives simple instructions on how to wire a basic light switch to an existing light.See sources and related links below
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.
What is the difference between a line and load in a light switch circuit?
In a light switch circuit, the line is the wire that brings power into the switch, while the load is the wire that carries power from the switch to the light fixture. The line wire is typically connected to the power source, while the load wire is connected to the light fixture.
How do you wire a 220 volts light?
The light is wired the same as any voltage fixture. Bring the source voltage to the fixture and connect it to the two fixture wires. If you want to control the off-on of the fixture take the source voltage to a switch first and then out of the switch to the light fixture.
What is the wire diagram for a light switch?
A wire diagram for a light switch shows the connections between the switch and the electrical wires in a building. It illustrates how the switch is wired to control the flow of electricity to the light fixture.
