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Podcast: HVAC School - For Techs, By Techs
Episode: Using Volts and Ohms in Diagnosis
Description: In today's podcast, Bryan talks about voltage (volts) and resistance (ohms), specifically using a voltmeter and an ohmmeter for diagnosis. We also discuss voltage drop. In many cases, Ohm's law is impractical for field usage because of the additional resistance from inductive reactance. We also don't typically measure impedance and only care about resistance on the windings. However, Ohm's law is still a valuable concept because it teaches technicians the relationship between voltage, amperage, and resistance (ohms). Ohm's law states that volts equal amps multiplied by ohms (E = I x R). Therefore, if the volts...