Questenaتمرینی که نشان می‌دهد بعد چه چیزی را مرور کنید
سؤال 413

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

  1. 30 amperes
  2. 25 amperes
  3. 20 amperes
  4. 15 amperesپاسخ درست

توضیح

The same table read the other way gives the answer: AWG 14 copper is limited to 15 amperes of overcurrent protection, so a 15 ampere fuse or breaker is the correct pairing. Anything larger would allow the wire to overheat before the device opened.

ادامهٔ این آزمون

شروع تمرین
سؤال 413: Which size of fuse or circuit breaker would be appropriate… · FCC General Class (Element 3) · Questena