Question T0A06
From subelement T0 - T0A
What is a good way to guard against electrical shock at your station?
Why is this correct?
All three methods work together to prevent electrical shock. Three-wire cords provide safety grounding through the green wire, protecting against equipment faults. Connecting equipment to common safety ground ensures consistent grounding and prevents voltage differences between equipment. Mechanical interlocks automatically disconnect power when high-voltage enclosures are opened, preventing accidental contact. Each method addresses different shock hazards, making all choices correct.
Memory tip
Look for 'All these choices are correct' when each option independently contributes to the same safety goal. Multiple valid safety practices often work synergistically rather than competing with each other. The key pattern: if each choice prevents the same hazard through different mechanisms, they're likely all correct.
Learn more
These three safety measures represent the amateur radio safety triangle: proper grounding (three-wire cords and common ground) prevents shock from equipment faults, while mechanical interlocks prevent shock from direct contact with hazardous voltages. Part 97.13 requires station operation in accordance with good amateur practice, which includes implementing multiple layers of electrical safety protection. Professional installations typically employ all these methods simultaneously.
Think about it
Why do you think amateur radio stations need multiple layers of electrical safety protection rather than relying on just one method?