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Retrieve Voltmeter and Understand Task

0:38
1:17
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At 0:38 in

Master Electrician Dad Teaches Son how to deal in Residential when HVAC isn’t working, Thoughts?

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What happens here

The instructor asks the student to retrieve a voltmeter to test the coil voltage of a contactor. The contactor is an electrical switch used to control the flow of electricity to the compressor and outdoor fan motor of an AC unit. The instructor specifies that if the student can correctly identify the coil terminals (A1 and A2) and measure the voltage, the lesson will be considered complete for the night.

Goal: Prepare to measure contactor coil voltage

Tools and materials

  • Contactor — The electrical component being tested (demonstration unit)
  • Voltmeter — Measuring voltage across the contactor coil

What they say

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always check the coil voltage. So, if I were to ask [music] you to take my voltmeter here >> Yep. >> and test my coil voltage, >> Yep. >> if you can put these in the right spot, we'll be done for tonight. We'll be done for tonight. Class will be over if you can do this. Show me how you would test the voltage on this contactor's [music] coil. >> Coil, okay. I'm going to put one on A1 and one on A2.

Auto-generated from the video audio.