To answer this question a voltage must be given.
The underground railway was NOT underground. It was a trail leading the black to safety.
six feet underground
A #2 copper conductor will limit the voltage drop to 3% or less when supplying 60 amps for 260 feet on a 220 volt system.
A 1/0 aluminum conductor will limit the voltage drop to 3% or less when supplying 30 amps for 500 feet on a 240 volt system.
I would use AWG #4 for that run in alluminum. You will have a 3.8% voltage drop which is acceptible.
I would use AWG #4 for that run in alluminum. You will have a 3.8% voltage drop which is acceptible.
151 feet
The ball which you drop from 5 feet will reach the ground first.
The largest drop on Expedition Everest is 80 feet.
the drop on the goliath is 235 feet
Six feet underground. This usually refers to someone who is buried.
More than 2,000 feet; nearly 700m underground.