Moving the two outside phases in sync keeps the crossarm from becoming what?

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Prepare for the North Carolina ElectriCities Lineworker Exam. Study with flashcards and multiple choice questions, each question offers explanations and insights. Enhance your readiness for the exam!

Multiple Choice

Moving the two outside phases in sync keeps the crossarm from becoming what?

Explanation:
Keeping the two outer phases moving together prevents the crossarm from twisting out of its proper alignment. When the outer conductors are moved in opposite directions or at different rates, the forces on the insulators and hardware can torque the crossarm, causing it to rack—that is, tilt or misalign relative to the pole. Moving them in sync keeps everything in the same plane, preserving clearance and reducing stress on the insulators and attachments. Bending or warping would require different kinds of mechanical deformation, and overheating is a thermal issue not caused by how the phases are moved.

Keeping the two outer phases moving together prevents the crossarm from twisting out of its proper alignment. When the outer conductors are moved in opposite directions or at different rates, the forces on the insulators and hardware can torque the crossarm, causing it to rack—that is, tilt or misalign relative to the pole. Moving them in sync keeps everything in the same plane, preserving clearance and reducing stress on the insulators and attachments. Bending or warping would require different kinds of mechanical deformation, and overheating is a thermal issue not caused by how the phases are moved.

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