Technician 2022-2026T0A06
What is a good way to guard against electrical shock at your station?
D
Answer
Electrical, RF, and mechanical safety
Type
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
Answer Notes
Electrical safety in an amateur radio station relies on multiple overlapping layers of protection. Using three-wire cords ensures that the chassis of your equipment is connected to the home's earth ground, preventing the exterior from becoming electrically live if a short circuit occurs.
Additionally, connecting all equipment to a common safety ground keeps every chassis at the exact same voltage potential. This prevents you from receiving a shock if you touch two different pieces of gear at the same time.
Finally, mechanical interlocks on high-voltage circuits automatically disconnect the power when a cabinet or housing is opened, physically preventing accidental contact with lethal voltages. Because all three of these practices are essential standard safety measures, they are all correct.
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Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?
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Where should a lightning arrester be installed in a coaxial feed line?