Technician exam question T0A07
Subelement T0, SAFETY· Group T0A
Where should a lightning arrester be installed in a coaxial feed line?
- A.At the output connector of a transceiver
- B.At the antenna feed point
- C.At the AC power service panel
- D.On a grounded panel near where feed lines enter the building (correct answer)
WhyA lightning arrester should be installed on a grounded panel near where feed lines enter the building. A lightning arrester works best mounted on a grounded panel right where feed lines enter the building, giving a lightning-induced surge the shortest possible path to ground before it can travel further into the structure or the equipment, answer D. Installing it at the transceiver's own connector (A) or the antenna feed point (B) leaves the whole indoor run of coax still exposed to a surge, and an AC power service panel (C) is the wrong feed line entirely for a coax-carried surge.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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