Journeyman Electrician Practice Exam

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Prepare for the Journeyman Electrician Exam. Test your skills with multiple-choice questions designed to help you succeed. Each question comes with hints and detailed explanations to assist in your study process.

Practice this question and more.

When located at the service location, how is an overcurrent protective device for a surge-protective device classified?

As a service disconnect
It is not counted as a service disconnect
As a backup device
It is removed from service

The correct answer is: It is not counted as a service disconnect

An overcurrent protective device for a surge-protective device is classified as not counted as a service disconnect because its primary function is to protect the surge protective device itself rather than to serve as a means of disconnecting the service to a dwelling or building. Service disconnects are specifically designed to cut off the electrical supply to a service or installation, enabling safety measures during maintenance or emergencies. Surge protective devices (SPDs), on the other hand, function to safeguard electrical equipment from voltage spikes. The overcurrent protective device associated with them serves to limit the current that can flow through the SPD, preventing damage from excessive current. While this protection is essential, it does not fulfill the role of a service disconnect that is mandated by the National Electrical Code (NEC) and related safety standards. Therefore, while it is critical for the protection of the electrical system, it does not contribute to fulfilling the requirement for a service disconnection point.