Collaborative Institutional Training Initiative (CITI) Certification Practice Exam

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A manufacturer installs a supplementary fuse inside a piece of utilization equipment. What is the correct general application of that fuse?

It may replace the required branch-circuit OCPD in all cases It is used only for service-entrance conductor protection It provides added protection within the equipment but does not substitute for required branch-circuit protection It is required to have the same ampere rating as the service disconnect

Correct Answer:

It provides added protection within the equipment but does not substitute for required branch-circuit protection

Explanation:

Supplementary overcurrent protection is used to provide additional protection within appliances or equipment. It is not a substitute for required branch-circuit overcurrent protection unless a specific listing or Code rule permits the application.

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