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Even though you have two like devices they have separate characteristics tailored for each piece of equipment. There are several factors that contribute to the resistance values, such as the amperage ratings. One might be rated at a higher load factor that requires heavier components for it's use. The first thing to come to mind is the overloads. In the motor relay starters there should be a set of heater overloads protecting the motors. They are rated for the individual motors to which they control. You can have two identical devices if one runs a 1hp motor and the other a 2hp then the overloads will be rated close to 125% of the start up amperage's of each motor and will reflect the difference in a resistance test as the 2hp OL's will have less resistance than the 1hp due to size and construction/materials. I have omitted any possibilities of test issues assuming they were both tested identically because the OL's are a series parallel circuit and will give different values tested at different points. Meaning if one device was tested from screw to screw across the OL's themselves and the other was tested from motor terminal to line terminal then the second one will cover more distance and incorporate more values in its readings. Try removing the OL's from the starter relay and test again to see if or what the difference is then. Then test the OL's unattached and any discrepancies should calculate out just be sure to use the correct formula for series and parallel resistance calculations or none of it will make sense lol.
What else can I help you with?
How you check amp draw on compressor?
Divide the power rating (in watts) by the voltage (in volts). So if you use a 100 watt light bulb in a typical 110 volt lamp then it will draw 100/110 = .91 amps of current. Or plug a 1500 watt electric heater into a 110 volt wall socket and it will draw 1500/110 = 13.6 amps of current.
What would the ohm reading be on a digital meter for a 4500 watt baseboard heater?
To calculate the ohm reading of a 4500-watt baseboard heater, you would need to know the voltage it operates at. You can use the formula Ohms = (Voltage x Voltage) / Watts to find the resistance in ohms. For example, if the heater operates at 240 volts, the ohm reading would be approximately 12.8 ohms.
Why do you get a voltage reading when the switch is turned off?
When the switch is off, there can still be a voltage reading if there is a constant power source connected to the circuit. This can be due to factors such as leakage currents, residual charge in capacitors, or electromagnetic induction in nearby wires inducing a voltage in the circuit.
Why does 120 volt outlet read 145 volts on meter?
A reading of 145 volts is high. The first thing that I would check is the accuracy of your meter. Check the voltage reading at different locations for example, friends homes, to see if the reading is still high there. If it is check your meter reading against another meter. If you are sure that your meter and reading is correct then call the utility company and get them to check the voltage for you.
The compressor overload should be set at at how many amps?
The compressor overload should generally be set to trip at around 10-15% above the rated running amps of the compressor motor. This helps protect the compressor from overheating and potential damage during prolonged overcurrent conditions. It is recommended to refer to the manufacturer's specifications for the exact amp rating.
1 hp compressor amp?
To answer this question the voltage of the compressor is needed.
What is the voltage at car ac compressor?
Most all are 12vdc
How do you troubleshoot home air condition compressor?
check starting capacitors. Check voltage supply with a voltmenter from outlet to compressor.
You need to connect a compressor which is rated at 240V ac but it is hooked up to a 120V power supply so you're uncertain on how that could be and how to connect the compressor?
Your compressor is a dual voltage compressor. The original installer followed the instructions to switch it (probably internally) to the 230 volt setting or to internally wire it for that voltage. The label or information plate on the unit may only indicate the higher voltage rating. You don't have to do anything.
What happens if there is no voltage applied to the clutch?
An air conditioner clutch will not engage without voltage. If it doesn't engage, the compressor will not turn.
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.
Should there be voltage readings across a closed contact?
For all practical purposes NO. The only voltage measured will be the voltage drop of the contact itself. This should be very low if the contact is good.
What device is in the pigtail connector of a 1999 ram 1500 air conditioner compressor?
That is a diode. It reduces voltage surges when the compressor kicks off and on.
Where are transient voltage most dangerous?
when reading voltage at the meter base where power comes in the house.
Voltage reading for a fully charged Battery?
12v
What is the purpose of magnetic unloader on the air compressor?
An item designed for the purpose of unloading an air compressor at the end of a pumping operation or at any time when voltage failure occurs.
What are the common reasons for an AC compressor to experience a hard start, and how can this issue be resolved effectively?
Common reasons for an AC compressor to experience a hard start include low voltage, faulty capacitors, or a worn-out compressor. This issue can be resolved effectively by checking and correcting the voltage supply, replacing faulty capacitors, or repairing or replacing the compressor if necessary. Regular maintenance and timely repairs can help prevent this issue from occurring.
