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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What is the required proximity for an approved conduit seal in a Class I, Division 1 location containing arcing devices?

12 inches
18 inches
24 inches
30 inches

The correct answer is: 18 inches

In a Class I, Division 1 location containing arcing devices, the National Electrical Code (NEC) specifies that an approved conduit seal must be installed within 18 inches of the enclosing device or the potential source of an explosion. This requirement is put in place to prevent the escape of explosive gases or vapors that could ignite if they come into contact with sparks or heat produced by the electrical equipment. The conduit seal acts as a barrier that contains any potential ignition source within a certain distance from the arcing device, significantly minimizing the risk of a hazardous explosion in areas where flammable gases are present. Adhering to this proximity ensures compliance with safety standards designed to protect both the equipment and personnel working in such potentially dangerous environments.