An ohmmeter can be used to measure the resistance of the primary and secondary coils in a transformer when it is de-energized and disconnected from any electrical circuits. The resistance of the primary coil will typically be higher than the resistance of the secondary coil in a step-down transformer, due to the greater number of turns in the primary coil. Want to learn more about transformers? Check the full video in the link below. Full video: https://buff.ly/3GGO81o #hvac #hvacschool #transfo
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