New York State Master Electrician Practice Exam

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Study for the New York State Master Electrician Exam. Prepare with detailed questions and thorough explanations. Boost your confidence and 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.

What is the interrupting capacity of a class H fuse?

5,000 fuse
7,500 fuse
10,000 fuse
15,000 fuse

The correct answer is: 10,000 fuse

The interrupting capacity of a class H fuse is specified to be 10,000 amperes. This means that in the event of a fault condition, such as a short circuit, the fuse is capable of interrupting the flow of current safely up to that level. Class H fuses are designed for use in various applications and are particularly valued for their ability to protect against overloads and short circuits, thereby ensuring the safety and reliability of the electrical system. Given that a fuse’s ability to interrupt current is critical to preventing damage to equipment and reducing fire hazards, understanding the interrupting capacity is essential for proper application and compliance with electrical codes. In the context of this question, the other options reflect interrupting capacities that do not align with the standardized specifications for class H fuses, making them incorrect. Recognizing that 10,000 amperes is the established capability for this fuse class helps reinforce both practical knowledge and adherence to safety standards in electrical installations.