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Q: How do you wire up a three phase coil contactor from scratch running it through a stop start swich?
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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 does a shading coil in a contactor actually work?

A shading coil in a contactor is used to hold the AC contactor's pole faces closed during the transition of the voltage through the zero voltage phase of an electrical cycle.For an excellent description see related links below.


Can you put one phase of a three phase ditribution board through a contactor so that the other phases stay on?

Yes, but you must have your neutral wire to form a return path for your current.


What causes a contactor for a 3 phase motor to kick in and out. Tha contactor was replaced with the heaters and still kicks in amd out?

See discuss question below.


What is the Difference between a magnetic starter And a contactor?

Motor starter usually refers to the complete assembly, including enclosure, contactor, control transformer (if any), overloads, fuses (if any), etc. A contactor is really just an overgrown relay, and is just one component of a starter. That having been said, many folks use the two terms somewhat interchangably. So someone who says starter may mean contactor, and vise-versa. Go figure.

Related questions

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 three phase coil contactor from scratch running it through a stop start switch?

This is pretty 'straightforward'. Turning the contactor on or off is accomplished via a single-wire control signal (piece of wire). Its the contacts on the device that will have 3 sets of contacts, that is, 3 (isolated from each other) screw terminals coming from the LINE side (hot), and 3 terminals for the LOAD thereby supplying power to a motor, fan, pump, heater, lights, etc.


How does a shading coil in a contactor actually work?

A shading coil in a contactor is used to hold the AC contactor's pole faces closed during the transition of the voltage through the zero voltage phase of an electrical cycle.For an excellent description see related links below.


On an electrical three phase contactor what is A1?

A1 is a termination point on a contactor it is an alseriery going to another point.


You found a 220volt coil on a 3 phase motor contactor and the one side of the coil is feed from B phase and the other side is also feed from B phase it would not pull in the contactor?

your not completing the circuit your only using one phase for a three phase motor


Can you put one phase of a three phase ditribution board through a contactor so that the other phases stay on?

Yes, but you must have your neutral wire to form a return path for your current.


Can you replace an 3 phase solid state relay with a contactor on a 3 phase heater?

Not without other modifications. The circuits used to turn the solid state relay on will not be suitable for turning a contactor on.


What causes a contactor for a 3 phase motor to kick in and out. Tha contactor was replaced with the heaters and still kicks in amd out?

See discuss question below.


How a basic elements of a pneumatic system work?

A connection of a contactor to three phase motor.


What is the Difference between a magnetic starter And a contactor?

Motor starter usually refers to the complete assembly, including enclosure, contactor, control transformer (if any), overloads, fuses (if any), etc. A contactor is really just an overgrown relay, and is just one component of a starter. That having been said, many folks use the two terms somewhat interchangably. So someone who says starter may mean contactor, and vise-versa. Go figure.


Are contactor points and bimetallic strip connected to the star delta starter of 3 phase induction motor?

yes


Can a three phase motor work on single phase power with out burning up?

A three phase motor will not operate on single phase. The motor will run on two phases but will not start. Motors running on just two phases is called single phasing. The line current of the two legs will go high and it is this factor that the motor controller uses to trip the contactor to open the circuit and isolate the motor from the power source.