NEMA Designations and Electrical Plugs Quiz
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Questions and Answers

What do the numbers before and after the dash in NEMA designations represent?

  • Voltage and wire gauge
  • Frequency and wire gauge
  • Voltage and amperage (correct)
  • Frequency and amperage

    • What is the blade spacing for both NEMA 5-15P plug and NEMA 5-15R receptacle?

  • 1 inch (25.4 mm)
  • 0.5 inches (12.7 mm) (correct)
  • 0.75 inches (19.05 mm)
  • 0.25 inches (6.35 mm)

    • What are the two basic classifications of NEMA connectors mentioned in the text?

  • Heavy-duty and light-duty
  • Straight-blade and locking (correct)
  • Polarized and non-polarized
  • Grounded and ungrounded

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