Buried cable marker posts with locating caps are required every how many meters?

• A. 500m
• B. 750m
• C. 1000m
• D. 1500m

Answer: (C)

Buried cables need visible reference points along their route so crews can locate them later without guesswork. Marker posts with locating caps provide a retrievable cue and often include an ID that links to the project records, helping locate the exact line when digging or inspecting. Spacing these markers about 1,000 meters apart gives a practical reference every kilometer—balancing the ability to re-establish the route with a manageable number of posts. If the spacing were much tighter, costs and labor would rise without proportional gain in locateability; if it were much wider, the gap could be large enough to make locating the exact line more uncertain during maintenance or excavation. Therefore, placing marker posts with locating caps roughly every 1,000 meters is the standard approach.