What should be done before climbing a tower that supports electrically powered devices?
The correct answer is B: Make sure all circuits that supply power to the tower are locked out and tagged. What should be done before climbing a tower that supports electrically powered devices is to make sure all circuits that supply power to the tower are locked out and tagged. Power must be disconnected and locked out to prevent accidental energization. For amateur radio operators, this is critical electrical safety. Understanding this helps ensure safe tower work.
Exam Tip
Before climbing tower with electrical devices = lock out and tag all power circuits. Think 'T'ower 'C'limbing = 'T'urn 'C'ircuits off and lock. Power must be disconnected and locked out to prevent accidental energization. Not notify, not unground - just lock out and tag.
Memory Aid
"Before climbing tower with electrical devices = lock out and tag all power circuits. Think 'T'ower 'C'limbing = 'L'ock 'C'ircuits. Power must be disconnected and locked out to prevent accidental energization. Critical electrical safety requirement."
Real-World Application
Before climbing a tower with electrically powered devices (e.g., antenna rotators, lights): All circuits that supply power to the tower must be locked out (disconnected and locked) and tagged (labeled) to prevent accidental energization. This ensures no one can turn on power while you're on the tower. Lock out and tag is required - this is critical electrical safety.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Notifying electric company isn't sufficient - you must lock out and tag circuits, not just notify. Notification isn't sufficient.
Option C: Incorrect. Ungrounding base of tower isn't the action - you must lock out and tag power circuits. Ungrounding isn't the action.
Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only lock out and tag is required.
题目解析
The correct answer is B: Make sure all circuits that supply power to the tower are locked out and tagged. What should be done before climbing a tower that supports electrically powered devices is to make sure all circuits that supply power to the tower are locked out and tagged. Power must be disconnected and locked out to prevent accidental energization. For amateur radio operators, this is critical electrical safety. Understanding this helps ensure safe tower work.
考试技巧
Before climbing tower with electrical devices = lock out and tag all power circuits. Think 'T'ower 'C'limbing = 'T'urn 'C'ircuits off and lock. Power must be disconnected and locked out to prevent accidental energization. Not notify, not unground - just lock out and tag.
记忆口诀
Before climbing tower with electrical devices = lock out and tag all power circuits. Think 'T'ower 'C'limbing = 'L'ock 'C'ircuits. Power must be disconnected and locked out to prevent accidental energization. Critical electrical safety requirement.
实际应用示例
Before climbing a tower with electrically powered devices (e.g., antenna rotators, lights): All circuits that supply power to the tower must be locked out (disconnected and locked) and tagged (labeled) to prevent accidental energization. This ensures no one can turn on power while you're on the tower. Lock out and tag is required - this is critical electrical safety.
错误选项分析
Option A: Incorrect. Notifying electric company isn't sufficient - you must lock out and tag circuits, not just notify. Notification isn't sufficient. Option C: Incorrect. Ungrounding base of tower isn't the action - you must lock out and tag power circuits. Ungrounding isn't the action. Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only lock out and tag is required.
知识点
Tower climbing, Electrically powered devices, Lock out and tag, Power disconnection
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.