The fusing factor of Class R LV fuses is

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The fusing factor of Class R LV fuses is:

  1. 1.25 or less
  2. 1.25 – 1.5
  3. 1.5 – 1.75
  4. 1.75 – 2.5

Correct answer: 4. 1.75 – 2.5

See Mathematical formula for Fusing Factor

Also see 4 Types of Fuses on basis of Fusing Factor

Read all Electrical Engineering MCQs on Power System Protection here

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