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How do you wire a single phase contactor controlled by a pir in a lighting circuit?
Wiki User
∙ 10y ago
Relatively simple. There are two power contacts, you wire the two wires for the line you want to interrupt or connect to these contacts. this is for the simplest type, SPST, one set of contacts to switch a power line on when the control signal is on. There are more complicated contactors with multiple sets of contacts. There are two connections for the control circuit which are typically low voltage AC or DC. Connect these to the control signal, ie, the signal you will use to turn the contactor on or off.
Wiki User
∙ 16y ago
Wiki User
∙ 10y agoIt is relatively easy to wire a single phase contactor that is controlled by a pir in a lighting circuit. Take the two wires for the line that is to be interrupted or connected and attach them to the two power contacts. If this is too complex please get some help from an electrician as working with electricity can be very dangerous.
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What is the main function of a contactor?
A contactor is another name for an electrical relay. It is a device that allows a low current (normal) switch to turn on or off high current equipment such as heaters or air-conditioners that would be well beyond its capacity.
What is single phase Controlled rectifier?
such a control rectifier that control or rectifier single phase. for that purpose we used SCR that is called single phase controlled rectifier.
Can dimmers control switched receptacles intended for plug in lamps?
You can wire a dimmer into any circuit. The issue is where you do it for a specific outlet. The dimmer would just have to connect to a single outlet and not all outlets on the same circuit. The issue is getting a dimmer that is compatible with the device you are dimming. Some lighting requires special dimmers.
Why is a dual line braking circuit better single line system?
If fluid is lost due to component failure, you will get total brake failure (loss of all braking except parking/emergency brake) on a single circuit system. A dual circuit system will only fail in one circuit, leaving the remaining circuit working. It is therefore safer.
Single phase and three phase circuit?
Yes, there is a difference between single phase and three phase circuits.
What type of switch would be used to control a lighting load from one control point?
In this type of situation, where there is more than one lighting circuit, a lighting contactor would be used. These types of contactors can be obtained in four and five pole configurations. Make sure that the contactor is rated for lighting loads and not motor loads. A normal switch, single pole single throw, would be used to switch the contactors on and off. A single switch could then be used to control as many contactors as you need to operate the lighting circuits.If there is just one lighting circuit, the total circuit amperage must be known, then the switch would be sized to the amperage of the circuit.
What is the main function of a contactor?
A contactor is another name for an electrical relay. It is a device that allows a low current (normal) switch to turn on or off high current equipment such as heaters or air-conditioners that would be well beyond its capacity.
Can a 3 phase contactor be wired for single phase?
Yes, L1 of the single phase supply is terminated under terminal L1 of the three phase contactor. L2 of the single phase supply is terminated under terminal L2 of the three phase contactor. A conductor from output terminal T2 is then taken to input terminal L3. The single phase load is then connected to the contactor's output terminals T1 and T3. This incorporates all three of the overload blocks on the contactor into the control circuit. With the overloads in the control circuit, if an overload occurs the magnetic contactor's holding coil will drop out and take the load off line.
How do you wire up a 208v single phase motor with micro switch?
if you are using the pressure switch to control a 3phase pump chances are it already has a magnetic starter and a single pole control circuit i have seen small 3phase air compressors with the contacts driven right off the diaphragm bigger ones usually have 110 volt controls i would be concerned about the current rating of the switch if you are trying to switch the motor directly there are many single phase compressors that run directly from the pressure 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.
How many phases does a 2 pole contactor have?
Yes, as long as the amperage rating is sufficient. Just don`t wire the second pole until the first pole contacts are spent. Then move the wires over and you effectively get twice the life out of it.
Can you use three phase thermal overload relay in a single phase system?
Yes, when using a three phase contactor on single phase, the three phase overload block can be used. The wiring of the contactor consists of taking L1 of the supply and connecting it to L1 of the contactor. The load is connected to T1 on the bottom of the overload block. L2 of the supply is taken to L2 of the contactor. Instead of connecting the T2 to the load, the conductor is taken back to the top and connected to the contactor in position L3. The other side of the load is connected to T3 on the bottom of the overload block. The overload block has three N.C. contacts, one for each leg of L1, L2 and L3. These three contacts are wires in series to the stop - start circuit. Years ago on old schematic diagrams these contacts used to be placed on the up stream side of the magnetic starter's coil. When the overloads tripped the voltage was left on the control circuit which was found to be dangerous for trouble shooting. Now the overload contacts are positions on the beginning of the start- stop circuit so that when a overload trips, the whole stop - start circuit becomes de energized.
What number wire gauge for a single pole light switch?
In residential wiring applications the most used is 14 gauge wire for light switches as long as the circuit breaker or the fuse is 15A. If your lighting circuit is on a 20A fuse/circuit breaker then you need to use 12 gauge wire
What is the circuit with a single path?
Series circuit
What is a circuit with a single path?
Series circuit
Why is an electrical circuit a series circuit?
It uses a single battery
Why is electrical circuit a series circuit?
It uses a single battery
