Grounding is the creation of a to an electrically conductive
body, such as the earth, which maintains a zero potential (not
positively or negatively charged) for connecting to an
electrical circuit. This is usually done by connecting the data
center equipment at the power source to an earth-grounding
electrode subsystem which is a network of rods, plates, mats, or
grids installed to establish a low-resistance contact with the
earth. The purpose of the earth connection is to provide safety
from to personnel and to protect the data center equipment from
voltage gradients which could cause failures or fires. All
metallic objects at the site that enclose electrical conductors
or that are likely to be energized by electrical currents (for
example, circuit faults, electrostatic , or lightning) should be
grounded for human safety, reducing fire hazards, protecting
equipment, and to maintain optimal system performance. A final
reason for proper grounding is noise control, an important
aspect of power quality. Bonding