Question
What is a good way to guard against electrical shock at your station?
Answer Options
- A) Use three-wire cords and plugs for all AC powered equipment
- B) Connect all AC powered station equipment to a common safety ground
- C) Install mechanical interlocks in high-voltage circuits
- D) All these choices are correct
Correct Answer: D
Explanation
All three options are essential components of a safe amateur radio station. Using three-wire cords ensures that if the hot wire accidentally touches the metal chassis, the current flows immediately to the safety ground pin, tripping a breaker rather than shocking you. Connecting all AC powered equipment to a common safety ground keeps all chassis at the same low electrical potential, preventing hazardous voltage differences.
Finally, mechanical interlocks (like switches that turn off power when a cabinet door is opened) are vital when working with high-voltage equipment, such as tube-based amplifiers. They ensure power is cut automatically before you can access dangerous components. All three are good practices against electrical shock.
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