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If 120V is present on a120V relay coil what will the voltage reading be across the closed set of relay contacts on a 120V circuit?
0v The relay is designed to act as a switch when voltage is applied across the coil. The contacts open or close but only pass through whatever is connected to those terminals. <<>> When a relay coil is energized the relay's contact change status. The closed set of contacts will open. The 120 volt circuit that is connected will turn off. As to the voltage at the contact terminals, it depends on where you are taking the voltage reading from and to. On the source side of the terminal there will be a reading of 120 volts to neutral or ground. On the other side of the contact terminal there will be zero volts to the neutral or ground. This is because that wire is in series with the load to neutral. A meter reading across the relay terminals will read 120 volts.
What is relay input voltage?
Relay input voltage refers to the voltage level required to actuate or energize a relay coil, allowing it to switch its contacts and control an electrical circuit. This voltage can vary depending on the relay type, commonly ranging from low voltages like 5V or 12V to higher voltages such as 24V or 120V. It's essential to match the relay's input voltage specifications with the power source to ensure proper operation and prevent damage.
How many amps can a 0.50 kva transformer give 277v input 120v output?
To determine the output current in amps for a 0.50 kVA transformer with a 277V input and 120V output, you can use the formula: Power (kVA) = Voltage (V) × Current (A) / 1000. For the output at 120V, the current would be calculated as follows: 0.50 kVA = 120V × Current (A) / 1000, which gives Current = (0.50 × 1000) / 120 ≈ 4.17 amps. Thus, the transformer can provide approximately 4.17 amps at the 120V output.
Can you take single phase of 120V with a hot wire and a neutral step up to 480v and then step down to 2 phases of 120V or do you have to input 2 phases of 120v to get 240V out?
Theoretically that can be done with transformers, but the power available would still be limited by the circuit breaker on the original 120 v supply.
Can you get 120V from 380V 3 phase?
Yes, you can obtain 120V from a 380V three-phase system using a transformer. By utilizing a step-down transformer designed to convert 380V to 120V, you can safely provide the desired voltage for single-phase loads. Additionally, you can also achieve 120V by using a phase-to-phase connection in a three-phase system, depending on the system configuration. However, it’s crucial to ensure that the transformer and wiring are properly rated for the application to ensure safety and efficiency.
What does 120v mean and how does it work?
120V stands for 120 volts, which is the standard voltage used in most residential electrical systems in the United States. This voltage is supplied by the electrical utility to power household appliances, lighting, and electronics. When a device is plugged into a 120V outlet, the voltage provides the necessary electrical energy for the device to function properly.
If 120V is present on a120V relay coil what will the voltage reading be across the closed set of relay contacts on a 120V circuit?
0v The relay is designed to act as a switch when voltage is applied across the coil. The contacts open or close but only pass through whatever is connected to those terminals. <<>> When a relay coil is energized the relay's contact change status. The closed set of contacts will open. The 120 volt circuit that is connected will turn off. As to the voltage at the contact terminals, it depends on where you are taking the voltage reading from and to. On the source side of the terminal there will be a reading of 120 volts to neutral or ground. On the other side of the contact terminal there will be zero volts to the neutral or ground. This is because that wire is in series with the load to neutral. A meter reading across the relay terminals will read 120 volts.
What is relay input voltage?
Relay input voltage refers to the voltage level required to actuate or energize a relay coil, allowing it to switch its contacts and control an electrical circuit. This voltage can vary depending on the relay type, commonly ranging from low voltages like 5V or 12V to higher voltages such as 24V or 120V. It's essential to match the relay's input voltage specifications with the power source to ensure proper operation and prevent damage.
How do you wire a 120v A base emter for 120v?
To wire a 120V A base emitter for 120V, you would typically connect the emitter to the ground, the base to the input voltage source (120V), and the collector to the load. Ensure you follow proper safety precautions and consult the specific datasheet for the A base emitter you are using for correct wiring instructions.
Will a kitchen aid mixer 120v 60hz run on 120v 50hz?
This is hard to say as it is up to the manufacture as to whether it is compatible. on the specification plate it should state the operating frequencies. if i had to say yes or no and the appliance is the latest model i would say yes it is compatible as these days manufactures allow for those tolerances.
Example of electric potential?
120v
How can a Discrete 120 V ac output module is to be used to control a 230 V DC solenoid show how this could be accomplished using a interposing relay?
Do your own homework. ^^^^^^^^^^ I'm pretty sure that if this user wanted a smart remark like yours he wouldn't have posted the question, this website's name is "answers.com" not "smart remarks made by people who have no lives and suck at life.com" thank you. I wish you luck getting the correct answer. Ditto....this person has nothing else better to do
How many watts in 120v-60Hz-12A?
To calculate watts, you can use the formula: Watts = Volts × Amps. For a 120V, 60Hz, 12A circuit, it would be: 120V × 12A = 1,440 watts. Therefore, the circuit uses 1,440 watts.
Is there an electrical switching device for residential use that will either run the furnace or the air conditioner to avoid increasing electrical service size?
A $10 120v or 24v relay tied into the controls of both units will do it, if the electrician is smart enough to know how to wire it in.
Where can you find a 120V power cable?
You can find a 120V power cable at your local hardware store. Look in the section under extension cords.
What makes a 480 motor with up down and stop 120v switch work?
I think I understand what you are asking. 3-phase motors usually are equipped with a starter or contactor, since all 3 hot wires need to be switched. The control voltage that runs the starters is 120V, because it's safer and also 120V switches and relays are cheaper. You would have a 480-120V transformer (called a control transformer) in the starter box to provide the 120V "control voltage". So the arrangement you describe would have two contactors, with two phases reversed between them. Energize one, and the motor runs forward. Energize the other, and it runs reverse. The switch sends 120V to each of the contactors, which are equipped with 120V coils.
Can 240V washer run on 120V outlet?
No.
