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.

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How long can a listed power-supply cord for information technology equipment be?

10 feet
15 feet
20 feet
25 feet

The correct answer is: 15 feet

A listed power-supply cord for information technology equipment is typically recognized to have a maximum length of 15 feet. This standard ensures that electrical cords maintain efficiency and safety while minimizing potential risks associated with longer cord lengths, such as voltage drop and increased heat generation. When designing and specifying power-supply cords, adherence to industry standards is critical. The 15-foot limit reflects considerations from the National Electrical Code (NEC) and safety standards established by various organizations, which aim to reduce the likelihood of electrical hazards in environments with information technology equipment. Longer cords can lead to several risks, including overheating, interference, and potential tripping hazards, all of which could be detrimental in spaces like offices and data centers where many devices are used. Therefore, the maximum length being set at 15 feet is a proactive measure to ensure safety and reliability in the operation of information technology devices.