The ground rod should be as close to the distribution panel as possible to keep the grounding conductor short there by keeping the impedance low. The CEC calls for two 10 foot ground rods placed ten foot apart. If the rod can not be driven in all the way it must be bent over and buried. The rods should not be cut off as there are identification marks on the top of the rods. If the electrical inspector can not find these marks he might make you install new rods. Just allowed in the new code are grounding plates. They have to be in direct contact with exterior soil at no less than 600 mm (24") below grade. The nice part is that they can be dug in with a backhoe and then buried. No more hammering.
I don't know about maximun, but I do know that maximum is greatest or in other words, the largest. If you meant maximun, sorry, I don't have an answer.
is the greaters number
What is the maximun interest fee on a pawn loan in CA?
Maximun is 45,000 ft under ATC, Absolute Maximun is 60,000 without special permission from the FAA
34
USA
Not as long as we can live for sure
there is no maximum
negative 320 f
To the lower part of the stratosphere.
10%
5 degrees Celsius