Earthing Explained Earthing, also known as grounding, is simply making a physical connection between the electrical frequencies of the human body with that of Earth’s (think barefoot in the grass, or at the beach). Just like the sun constantly provides us with energy and vitamins, the earth too is a source of subtle energy in the form of electrons. When you touch the ground with your bare feet or body, those electrons flow into you. The earth’s surface has a virtually limitless supply of mobile electrons that gives the ground we walk on (as well as lakes and oceans) a natural negative electric charge. When you touch your body to the ground, it dissipates static electricity and extraneous environmental electrical charges that are on you. At the same time, you receive a charge of energy in the form of free electrons and your body synchronizes with the natural frequencies of the earth. When you become grounded, your body absorbs enough electrons to maintain the same electrical potential as the earth. This amount of electrons varies significantly between people depending upon their lifestyle and activity, and it is impossible to measure.

1. ASSIGNMENT – 5
SHIVANI ANAND-

2. EARTHING

3. To create a successful balance between lighting and architecture, it’s important to remember three key aspects
of architectural lighting: (1) aesthetic, (2) function, and (3) efficiency. Aesthetic is where designers and
architects focus on the emotional impact the balance of lighting and architecture will have on occupants. It’s
where designers determine how they want people to feel when they walk around a space. This aspect is
especially important for retail locations; exterior lighting should draw the consumer in, and the interior lighting
should awe them as they walk through the doors in addition to showing off product.

6. OBJECTIVES OF THE EARTHING
• Provide an alternative path for the fault current to flow so that it will not endanger the user
• Ensure that all exposed conductive parts do not reach a dangerous potential
• Maintain the voltage at any part of an electrical system at a known value so as to prevent over current or
excessive voltage on the appliances or equipment.
• Ensure that all exposed conductive parts do not reach a dangerous potential
• Provide an alternative path for the fault current to flow so that it will not endanger the user from electric shock
• To protect the building machinery and appliances from short circuit.

7. Terminologies
• Earth – the proper connection b/w electrical installation system via
conductor to the buried plate in the earth.
• Earthed – when an electrical device, appliance is connected to the earth
electrode. Example : plates, rod, wires and pipes.
• Earth electrode – when a conductor (or conductive plate) buried in the earth
for electrical earthing system.
• earthing load – the conductor wire or conductive strip connected between
earth electrode and electrical installation system and device is called earthing
rod.
• earth continuity conductor – the conductor wire which is connected among
different electrical devices and appliances like DB, different plugs and
appliances etc.
OR
wire between earthing load and electrical device
• sub-main earthing conductor – a wire connected between switch board and
DB.

8. Good Earthing Means
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9. Qualities Of Good Earthing
• Must be of low
electrical
resistance
• Must be of
good corrosion
resistance
• Must be able
to dissipate high
fault current
repeatedly

10. Purpose of
Earthing
• To save human life from danger of electrical shock or death by
blowing a fuse i.e. To provide an alternative path for the fault
current to flow so that it will not endanger the user
• To protect buildings, machinery & appliances under fault
conditions ie. To ensure that all exposed conductive parts do not
reach a dangerous potential.
• To provide safe path to dissipate lightning and short circuit
currents.
• To provide stable platform for operation of sensitive electronic
equipments i.e. To maintain the voltage at any part of an
electrical system at a known value so as to prevent over current
or excessive voltage on the appliances or equipment .
• To provide protection against static electricity from friction

11. EARTHING IMPROTANT
IN BUILDING
Earthing is an important component
of electrical systems because of the
following reasons: It keeps people
safe by preventing electric shocks. It
prevents damage to electrical
appliances and devices by
preventing excessive current from
running through the circuit.
Earthing is used to protect you from
an electric shock. It does this by
providing a path (a protective
conductor) for a fault current to flow
to earth. It also causes the protective
device (either a circuit-breaker or
fuse) to switch off the electric current
to the circuit that has the fault.

12. What is the
importance of
lighting? What is the importance of lighting
Lighting plays with our perceptions, creates
unique sensations and experiences and can
completely change a design. “Light has the
capacity to create an atmosphere much more
than furniture or an accessory can; it recreates
unique sensations and experiences”.

13. Why is lightning protection so
important?
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14. Why do we need lightning protection?
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15. External lightning protection
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16. Internal lightning
protection
(Electronic
systems
protection)
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