Answer :
Final answer:
Underground drop cable should generally extend a minimum of 12 inches above the tap at the pedestal or vault to prevent accidental damage and ensure visibility.
Explanation:
In general, the rules can vary depending on local codes and safety regulations. However, it's commonly accepted that underground drop cable should extend a minimum of 12 inches above the tap at the pedestal or vault. This is to ensure that the cable is not accidentally damaged or severed, and so that it can be clearly seen by any approaching individuals or machinery. Also, it helps to minimize the impact of environmental factors such as water and soil erosion.
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