Red Seal Electrician Practice
MotorsQuestion 1262 of 1506

Which IEC class corresponds to the NEMA class B design?

  1. Class H
  2. Class D
  3. Class F
  4. Class N
Show answer

Correct answer: Class N

The text matches IEC N to NEMA B and IEC H to NEMA C.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.7: Tesla Polyphase Induction Motors

Practice motors

Questions last reviewed: 18 October 2026