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Electrical Wire and Cable

Testing a 240 Volt Dryer Circuit

The voltage readings at my dryer plug are not right, what should I do? How to Test a 240 Volt Dryer Circuit.


Electric Dryer Circuit
Electrical Question: The voltage readings at my dryer plug are not right, what should I do?

This electrical wiring question came from: Philip, a Homeowner from Phoenix, Arizona.

Dave’s Reply:
Thanks for your electrical testing question Philip.

How to Test a 240 VoltĀ  Dryer Circuit

Application: Testing a 240Volt Electric Dryer Circuit.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with hand tools and electrical troubleshooting skills.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before making inspections or wiring modifications.
Note: Electrical troubleshooting is best performed by a qualified electrical contractor

Testing the Voltage of a Dryer Receptacle

More about Electrical Wiring for a Dryer Circuit

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For more information about 220 Volt Wiring Diagram
220 Volt Wiring Diagram
220 Volt Wiring Diagram


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2 Responses to “Testing a 240 Volt Dryer Circuit”
  1. Skip says:

    Electric Dryer Voltage Problem
    Trouble shooting my clothes dryer …

    In checking to see if I have power, I used a digital volt meter.

    Hot leg 1 to Hot leg 2 reads 239V

    Hot leg 1 to neutral reads 96 V

    Hot leg 2 to neutral reads 143 V

    any thoughts

    • Dave Rongey says:

      Checking Dryer Voltage
      Hi Skip,
      Make all the Voltage Tests to the Ground Wire for the most revealing results.
      Typically, with abnormal Dryer Circuit Problems there may be a fault with either the neutral, or one of the hot legs.
      A higher than normal Voltage Reading on one leg is usually an indication that there is a Voltage Feedback which takes place through the Electric Heating Elements of the dryer.

      Key points to check for Dryer Circuit Problems:
      Dryer Circuit Breaker, including connections to the panel, the Dryer Receptacle, and the Dryer Cord.

      I hope this helps,
      Dave

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