Why Japan Uses Overhead Power Lines Instead of Underground?
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5 Questions
Question 1 of 5
What is the primary reason cited for the high cost of installing underground power lines in Japan?
Undergrounding is 2-10 times more expensive due to specialized materials, conduit installation, and difficult excavation in rocky or high-water-table terrain.
Question 2 of 5
Why are overhead power lines considered advantageous in the context of Japan's seismic activity?
Overhead lines allow technicians to visually inspect and repair damage in hours, whereas underground faults can take weeks to locate and fix.
Question 3 of 5
What historical factor contributed to the prevalence of overhead power lines in Japan today?
Overhead lines were the fastest and cheapest way to restore electricity during the rapid reconstruction and economic growth following WWII.
Question 4 of 5
Besides electricity, what other functions do utility poles in Japan serve?
Poles host communication cables, streetlights, traffic signs, and address markers, making them essential multi-purpose civic infrastructure.
Question 5 of 5
What is a noted drawback of overhead power lines during a major earthquake?
While easier to repair, toppled poles pose a risk by blocking roads needed for emergency response and potentially sparking fires.
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