Gas Fitter Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Gas Fitter Test. Enhance your knowledge with flashcards and multiple-choice questions, each accompanied by hints and explanations. Ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Fuses serving motor circuits should be:

Quick blow type
Time delay type
Oversized by 2.5%
Oversized by 3.5%

The correct answer is: Time delay type

Fuses serving motor circuits should be of the time delay type because motors typically experience inrush currents that are significantly higher than their normal operating currents during startup. A time delay fuse is designed to withstand this temporary overload without blowing, allowing the motor to start properly. This quality prevents nuisance tripping, which can interrupt operations when the motor initially draws higher current levels as it accelerates. Using a time delay fuse ensures that the protection device only activates during prolonged overload conditions or short circuits, rather than during the normal transient conditions associated with starting a motor. This characteristic is essential for maintaining the reliability of the motor circuit and ensuring the longevity of the equipment being powered.