Equipotential zone
Equipotential zone
(OP)
To etablish an equipotential zone, a ground mat should be installed under the operation area of equipment and then connctect the mat to main grid. My question is that where the mat should be installed on the surface of the soil or below the sufrface of the soil. What are the difference between this two practices?






RE: Equipotential zone
RE: Equipotential zone
RE: Equipotential zone
The other part of the story is step potential. On soil, your feet will be at two different potentials. Worse yet, is when one foot is above the mat and the other off.
RE: Equipotential zone
RE: Equipotential zone
RE: Equipotential zone
RE: Equipotential zone
RE: Equipotential zone
If theft is a problem, I would worry about a buried copper ground mat. If any thieves know you are burying a few pounds of copper near the surface, they may disappear and the switch operator may not know he has no protection. If you want to bury the mat, I'd suggest using copperweld mesh instead of copper, and connect it to the equipment with copperweld wire. Another alternative would be a portable ground mat to lay on the ground only when operating the switch.