1 Calories Burned For Walking: 3.15 mph (19 minutes per mile). 2  Calories Burned For Walking: 2.85 mph (21 minutes per mile). 3  Calories Burned For Treadmill: 5 mph (12 minutes per mile).4  Calories Burned For Treadmill: 5.45 mph (11 minutes per mile). Calories Burned For Walking: 3.15 mph (19 minutes per mile). 2  Calories Burned For Walking: 2.85 mph (21 minutes per mile). 3  Calories Burned For Treadmill: 5 mph (12 minutes per mile). 4  Calories Burned For Treadmill: 5.45 mph (11 minutes per mile).
Direct Burial of Cables or Conductors. Underground feeder cables, labeled UF, can be buried without additional protection from conduits because they have a tough jacket designed for burial. Bury UF cables 24 inches below the soil surface, and 18 inches deep when protected by 2 inches of concrete. For all other applications, the burial depth is the same as specified for conduits, except that conduits are required for UF cables in 2 inches of solid rock.
This answer is mostly based on the United States electrical system, and the answer may vary depending on where you are. The NEC code specifies that a solid copper wire used to connect to a ground rod must be at least either #6 or #8 gauge (depending on the size of your electrical service cable).#6 cable cable will always satisfy the sizing requirement, though in some cases larger is desirable.or the best lightning protection, your grounding wires should not have any sharp bends. This is because lightning is a very high frequency signal, and the wire's impedance increases with frequency. The 0.4 ohm/thousand feet figure is only valid at DC (zero frequency).