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you haven't told us the make and model ... we cannot help unless you supply the informationNikhil N said:
The wire size for a contactor depends on the voltage and amperage of the circuit. You can refer to the manufacturer's instructions or use an online wire size calculator to determine the appropriate wire size for your specific contactor.
Yes, you will need to use a separate power source for the contactor. This is typically a low voltage control circuit that is connected to the contactor in order to switch it on and off.
The specific wiring diagram for your contactor will vary depending on the manufacturer and model. However, in general, you will need to connect the incoming power wires to the appropriate terminals on the contactor, as well as the control wires that will switch the contactor on and off. Always refer to the manufacturer's instructions for the correct wiring diagram.
Yes, contactors can be used to control multiple circuits. You can connect multiple loads to the output terminals of the contactor, as long as the total amperage does not exceed the contactor's maximum rating.
You can test the contactor by using a multimeter to check for continuity between the input and output terminals when the contactor is switched on. You can also test the control circuit by checking for voltage at the input terminals when the contactor is supposed to be switched on. If there is no continuity or voltage, the contactor may be faulty and need to be replaced.
