General exam question G0B13
Subelement G0, ELECTRICAL AND RF SAFETY· Group G0B
Where should lightning arrestors be located?
- A.Where the feed lines enter the building (correct answer)
- B.On the antenna, opposite the feed point
- C.In series with each ground lead
- D.At the closest power pole ground electrode
WhyLightning arrestors should be located where the feed lines enter the building. Lightning arrestors are installed right where feed lines enter the building, intercepting a surge traveling in on the line before it can reach the operating position and station equipment, answer A. Mounting one on the antenna itself, in series with a ground lead, or out at the nearest power pole doesn't protect the equipment inside the building the way an entry-point arrestor does, so B, C, and D are wrong.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- G0B01Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?
- G0B02According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
- G0B03Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
- G0B04Where should the station’s lightning protection ground system be located?
- G0B05Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?