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What is the difference between an definite purpose contactor and a lighting sontactor?
Wiki User
∙ 12y ago
A definite purpose contactor is designed (and rated) for a specific load. So a lighting contactor is one example of a definite purpose contactor. A motor starter contactor is another example. So, a lighting contactor is a definite purpose contactor, but a definite purpose contactor is not necessarily a lighting contactor (it might be a motor starter, for instance).
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoA definate purpose contactor can have a coil voltage rating of almost anything ranging from 12 volts DC to 277 Volts AC and a lighting contactor will generally only have a 120 volt AC coil. They can be interchanged. i.e. A lighting contactor can be used in any control environment and visa versa for a DP contactor so long as your control voltage matches that of the coil on the contactor.
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When is a lighting contactor required?
A lighting contactor is a special contactor that is used only for control lighting installations. The contact ratings are incandescent rating and not to be used for motor control. The contactor allows banks of lights to be controlled by one device. The controlling devices could be switches, computers or photocells to bring the lights on at any preset times. <<>> A Contactor used to supply the Power to the lights
What is the function of contactor?
A contactor is used like a switch. It is used to open and close the circuit it is in series with by electrically energizing and de-energizing the holding coil of the contactor. By having this adaptability the circuit can be remotely operated from a distance and the operator does not have to be in close proximity to the circuit. Contactors are used to remotely operate banks of lighting and of course the contactor is used for motor control. On contactors that control motors an additional overload block is added to the bottom side of the contactor to protect the motors if they get into an over load condition. The N.C. contacts in the overload block will open and the holding coil of the contactor will de-energize and drop the motor off line.
Which inventor wanted to develop affordable lighting for homes?
Thomas Edison was the inventor who wanted to develop affordable lighting for homes.
What is different between Lighting and lighting design?
Lighting is referring to the object.Lighting Design refers to the arrangement of the Lighting objects.Lighting objects are numerous and diverse.sconce/wall fixtureceiling fixturechandelierpost lanterngas lanternpendant/hanging fixturetrackrecessed canspotfloor lamptable lampetc., etc.,Lighting Design does go far beyond the arrangement, there are many other factors to consider when working with a lighting design, such as the heat a certain type or number of lights will emit as well as the color tone and how the placement of each light will affect the color palette of the room and the balance of the floor plan.
Is lighting a functional requirement of a roof?
No, it is not
When is a lighting contactor required?
A lighting contactor is a special contactor that is used only for control lighting installations. The contact ratings are incandescent rating and not to be used for motor control. The contactor allows banks of lights to be controlled by one device. The controlling devices could be switches, computers or photocells to bring the lights on at any preset times. <<>> A Contactor used to supply the Power to the lights
How do electro pneumatic contactors work?
A contactor is an electrically controlled switch (relay) used for switching a power circuit. an electro pneumatic contactor is similar to the above except it uses a pneumatic signal to initiate the switching of the electric power circuit. an electro magnetic contactor is a contactor driven by an electric control signal. It us usually just called a contactor.
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 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 function of contactor?
A contactor is used like a switch. It is used to open and close the circuit it is in series with by electrically energizing and de-energizing the holding coil of the contactor. By having this adaptability the circuit can be remotely operated from a distance and the operator does not have to be in close proximity to the circuit. Contactors are used to remotely operate banks of lighting and of course the contactor is used for motor control. On contactors that control motors an additional overload block is added to the bottom side of the contactor to protect the motors if they get into an over load condition. The N.C. contacts in the overload block will open and the holding coil of the contactor will de-energize and drop the motor off line.
What would cause a lighting contactor to hum vigorously?
The first thing that springs to mind is that the pole faces of the contactor are dirty. If the contactor is in a position where it can get weathered, it would probably be a rust built up. Dis assemble the contactor and emery cloth the pole faces until they are shiny again. A light wiping of oil will increase the time between cleanings. If the sound is more like a chatter then the shading coil on the contactor's pole face could be cracked or broken. This small copper coil is used to induce magnetism into the pole face to hold the contactor closed as the voltage transits through the zero voltage of the sine wave cycle.
What relay would you use to switch 400 watts of fluorescent lights?
There are special contactor that are made to switch lighting loads. These relays and not wattage rated but amperage rated. Use the following formula with the voltage that you are going to use to find the size of contactor that you need. I = W/E, Amps = Watts/Volts.
Is there a difference between lighting bug and firefly?
Is there a differance between lighting bug and firefly?
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.
What is the difference in a bolt of lighting and an electric current?
Nothing but magnitude. By millions of times.
How is bathroom lighting installed over a shower?
Bathroom lighting is installed the same as any other lighting fixture would be. The only difference is they are sealed off so moisture cannot ruin the electrical wiring.
What is the difference between Energy Efficient and Energy Star when it comes to home lighting?
What are some of the brands that carry green, energy saving home lighting fixtures?
