Technician 2022-2026T0B01

Which of the following is good practice when installing ground wires on a tower for lightning protection?

C
Answer
Electrical, RF, and mechanical safety
Type
A
Put a drip loop in the ground connection to prevent water damage to the ground system
B
Make sure all ground wire bends are right angles
C
Ensure that connections are short and direct
D
All these choices are correct

Answer Notes

Lightning strikes involve massive amounts of electrical energy containing high-frequency components. For a ground wire to effectively carry a lightning strike to the earth, it must have the lowest possible impedance. Keeping the ground connections short and direct minimizes this impedance and provides the path of least resistance. You should never use sharp bends or right angles in ground wires for lightning protection. A sharp bend acts as an inductor, creating a high-impedance choke point that can cause the lightning energy to jump off the wire and damage nearby equipment. Drip loops are for preventing water entry on feedlines, not for ground wires.
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Which of the following precautions should be taken when measuring high voltages with a voltmeter?
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