3. Presentation Title
IMPORTANCE OF GROUNDING
๏ต GROUP MEMBERS
๏ต MUHAMMAD USMAN (FA20-EPE-105)
๏ต ABDULLAH (FA20-EPE-002)
๏ต YASIR JAMSHED (FA20-EPE-036)
4. INTRODUCTION
๏ต Grounding your electrical
systems is critical to
protect both building
occupants and equipment
from the danger of high
voltage. When a
conductive surface, like
metal, is not grounded and
becomes electrically
energized, it can carry
sufficient voltage to
administer a fatal shock.
5. IMPORTANCE OF ELECTRICAL
GROUNDING
๏ต Grounding your electrical systems is critical to
protect both building occupants and
equipment from the danger of high voltage.
When a conductive surface, like metal, is not
grounded and becomes electrically energized,
it can carry sufficient voltage to administer a
fatal shock.
๏ต The National Electrical Code defines ground as
a โconducting connection, whether
intentional or accidental between an
electrical circuit or equipment and earth or
some conducting body that serves in place of
the earth.โ The NEC also states that โthe
earth shall not be used as the sole equipment-
grounding conductor.โ
6. Why Electrical Grounding Is Important
๏ต Imagine that an electrical issue occurs, like a lightning strike or a power
surge, where no grounding exists. The metal components then act as a
conductive surface, becoming electrically energized. When a person
accidentally touches these components, their body provides the current
with a path to the earth, shocking them in the process.
7. A proper grounding system ensures the
following points
๏ต Circuits have an effective return path, from the equipment to the power
source.
๏ต Low resistance is provided in order to trip or short circuit a breaker in the
event of an electrical fault.
๏ต Metallic components are electrically connected to prevent a voltage
connectionfrom existing between them.
๏ต A zero-voltage reference point is established and maintained.
8. The Benefits of Proper Grounding
๏ต Though grounding gets little
attention, it is one of the
most significant facets of
building safety and
equipment maintenance
today. The Electric Power
Research Institute (EPRI)
states that "better than 80%
of all electronic system
failures that are attributed
to power anomalies are
actually the result of
electrical wiring or
grounding errors or are
generated by other loads
within the customer's
facility."
9. Advantages of proper grounding
๏ต Eliminates shock hazard.
๏ต Protects equipment from voltage.
๏ต Prevents electrical fires.
๏ต Reduces equipment repair cost and
downtime.
๏ต Lowers levels of electrical noise (fluctuations
in an electrical signal).
