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A 30-ampere, 120-volt branch circuit is supplying a clothes dryer. What is the minimum size of the overcurrent protection required for this circuit?

Texas Master exam practice question · Branch Circuits

A 30-ampere, 120-volt branch circuit is supplying a clothes dryer. What is the minimum size of the overcurrent protection required for this circuit?

  • A20-ampere
  • B30-ampere
  • C40-ampere
  • 50-ampere

Exam tip

Always check the specific requirements for overcurrent protection for clothes dryers.

Why D is correct

According to 210.11(A), the overcurrent protection for a clothes dryer must be not less than 30 amperes. The 20-ampere and 30-ampere options are insufficient, and the 40-ampere option is not required.

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