As per the requirements of 230.24(B), Vertical Clearance from Ground, “Service-drop conductors, where not in excess of 600V, nominal, must have the following minimum clearance from final grade: (1) 3.0 m (10 ft) — at the electric service entrance to buildings, also at the lowest point of the drip loop of the building electric entrance, and above areas or sidewalks accessible only to pedestrians, measured from final grade or other accessible surface only for service-drop cables supported on and cabled together with a grounded bare messenger where the voltage does not exceed 150V to ground.”