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How many line conductors are installed between the switch and light fixture?
Wiki User
∙ 11y ago
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.
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∙ 11y ago
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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.?
Depends if ballast is in fixture and switch is on. Several watts if new ballast and perhaps 15 watts for old ballasts....
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.
What is a key less light fixture?
It just holds the bulb, does not have a switch in the 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.
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 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.?
Depends if ballast is in fixture and switch is on. Several watts if new ballast and perhaps 15 watts for old ballasts....
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.
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 a key less light fixture?
It just holds the bulb, does not have a switch in the 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.
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 many wall mount switch controlled lighting outlets shall be installed in every habitable room and bathroom?
There is no maximum or minimum amount in the U.S. for switched controlled outlets. You can have none if you want. However you must have one outlet installed evert 12 feet minimum or you can install more. If a wall is 2 feet or wider it must have an outlet installed.
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 do you need to wire in a mercury vapor bulb?
The same procedure is used to wire a mercury vapour fixture as it is a normal home fixture. First the voltage source is needed and has to match the voltage that is on the nameplate of the mercury vapour fixture. The amperage of the fixture has to be taken into consideration, also taken from the fixtures nameplate. Once the amperage is known then the decision is whether one or more fixtures will be placed on the same circuit. When the total amperage is decided on, it will be that amperage that decides what size conductors will be used and what size breaker will be used to protect the circuit. Next decision is how you want to control the fixture. There are two methods depending on where the fixture will be placed. If it is outside then a photo cell with a bypass switch ahead of the cell is the most common configuration. If the fixture is an indoor type then just a wall switch will be used to control the fixture.
Why does an energy saving light bulb with a light sensor stay on in daylight?
The sensing unit on the fixture is thinking that it is night time. If your fixture has a switch before the light, that has to be left on for the sensor to work, try the following. Turn the fixture off with the switch and leave it off for about ten minutes. Turn the switch back on and the fixture will turn on. If the sensor circuitry is working the fixture will turn off after your "delay on" setting is reached. If there is no switch before the fixture check to see if the sensor has been covered, fooling the sensor into thinking it is night time. If it is a hollow tube type sensor, sometimes hornets will lay an egg in there and cover the sensor with a mud patch. As a last resort change the sensitivity control so that is senses daylight sooner, allowing the sensor to shut off earlier. If none of the above work its time to buy a new sensor. These can be bought individually and installed into the old fixture.
How do you wire in a pull chain switch in a bathroom light fixture?
If you are adding the pull chain to an existing fixture then the pull chain switch should have two wires. Wire nut either one to the hot wire coming in and the other to the black wire of the fixture.
