This document discusses Indian electricity regulations and standards for earthing electrical installations. It provides an overview of the Indian Electricity Rules from 1956 and the Electricity Act of 2003. The Central Electricity Authority Regulation from 2010 is summarized, which specifies measures relating to safety and electric supply. Key requirements around earthing systems are outlined for different voltage levels, including requirements for equipment, neutral points, leakage protection, overhead lines, and more. Proper earthing is emphasized as an important safety measure.

1. TO
PRESENTATION

2. EARTHING OF ELECTRICAL
INSTALLATIONS
as per
CEA REGULTIONS 2010
by:
H.C. Chandniha
Mgr. (TPIE)

3. INDIAN ELECTRICITY RULES-1956
AN OVERVIEW
 Indian Electricity Rules are drafted and notified in the Gazette of India by
the Central Electricity Board in exercise of power conferred by section 37
of Indian Electricity Act 1910.
 Indian Electricity Rules-1956
 Published on & effective from 26-06-1956
 In Exercise of power conferred by Sec. 37 of Indian Electricity Act 1910(IX
of 1910)
 Central Electricity Board makes the IE Rules-1956The rules are reviewed
and amended from time to time by the CEB.

4. THE ELCTRICITY ACT-2003
An Act to consolidate the laws relating to;
 Generation, transmission, distribution, trading and use of electricity.
 Generally for taking measures conducive to development of electricity
industry.
 Promoting competition.
 Protecting interest of consumers and supply of electricity to all areas.
 Rationalization of electricity tariff
 Ensuring transparent policies regarding subsidies, promotion of efficient and
environmentally benign policies
 Constitution of Central Electricity Authority, Regulatory Commissions and
establishment of Appellate Tribunal and for matters connected therewith or
incidental thereto.

5. CEA Regulation 2010
Notified 0n 20-09-2010
Published on & effective from 24-09-2010
 In Exercise of power conferred by Sec. 177 of
Indian Electricity Act 2003(36 of 2003)
 Central Electricity Authority here by makes the
Regulations 2010 for Measure relating to Safety &
Electric Supply; Called;
“CEA (Safety & Electric Supply) Regulations-2010”

6. EARTHING or GROUNDING
 Earthing, is a system generated in the Earth.
 Earthing is the protection of leakage current .
Neutral: Neutral is the return path of alternating current. It is
produced from star point of Alternators or Transformers .
 Earth 1. a. The land surface of the world.
b. The softer, friable part of land; soil, especially productive soil.
 2. often Earth The third planet from the sun, having a sidereal
period of revolution about the sun of 365.26 days at a mean
distance of approximately 149 million kilometers (92.96 million
miles), an axial rotation period of 23 hours 56.07 minutes, an
average radius of 6,378 kilometers (3,963 miles), and a mass of
approximately 5.974 × 1024 kilograms (1.317 × 1025 pounds).

7. Voltage range
Low Voltage : up to 250V
Medium Voltage : above 250 -650V
High Voltage above: 650 -33KV
: above 10KV for DC
Extra High Voltage : above 33KV

8. Reg-41(Rule-61):Connection with earth
SPECIFIC OF LV & MV EQUIP.(125V – 650V)
System as well as Neutral earthing.
Neutral Conductor of System voltage Generating Stn. & S/S
i) Earthing by minimum two separate & distinct
connections with minimum two different earth
electrodes.
ii) Earth electrodes shall be inter connected to reduced
the earth resistance.
iii) Neutral conductor shall also be earthed at one or more
points along with distribution system or service line.
iv) System supply by concentric cable, external conductor
earthed by separate & distinct connections

9. Reg-41(Rule-61):Connection with earth
xii) Equipment Earthing:
All electrical equipment such as Gen, Trans., Motor(stationary &
portable), Welding Transformers etc. metallic body/ frame of the
equipment earthed with two separate & distinct connections with
earth.
xiii) Neutral point of Generators & Transformers Earthing:
Connecting it to earthing system by not less than two separate &
distinct connections.
xiv) - Protective frame/Conduit./Junction box earthing.
All metallic junction box, metal casing, metallic covering throughout
the length & 3rd pin of socket shall be earthed up to 250V.
xvi)-Rule-61(5): Measurement of Earth resistance
Earthing resistance shall be measured on dry day during dry season
not less than once in two years.

10. Reg.-42(Rule-61A): Earth leakage protection device
Reg.-47: Earthing of metal sheathed electric supply line
Other than overhead lines voltage exceeding 650V, outer
metal sheathing shall be earthed
Provision of ELCB:
All LV installation(up to 250V) of 5 kW & above shall be
controlled by earth leakage protective device to disconnect
supply instantly of E/F or leakage.

11. Reg.48: Apparatus earthing
Voltage exceeding 650V (HT & EHT)
1) All not carrying current metallic part of the associate
installation of voltage exceeding 650V shall be
earthed to a grounding system or mat.
i) Limit to touch the Step & Touch potential
ii) Limit to ground potential rise to tolerable values so as to
prevent danger due to transfer of potential through ground,
earth wires, cable sheath, fences etc.
iii) Maintain the resistance of earth connection to such a value
as to make operation of protective device effective.
2(i) Generator & Transformer neutral shall be earthed
through suitable impedance by not less than two
separate & distinct connections.

12. Reg.48: Apparatus earthing
(Voltage exceeding 650V, HT & EHT)
(3) Gen. Stn., S/S, Industrial Installation more than
33KV neutral & frame shall earthed with common
earthing grid/mat to rise to tolerable values for step
& Touch potential.
(4) Single phase system voltage more than 650V shall
be effective earthing.
(8) ER shall be measure in a dry day & dry seasons, not
less than once in a year.

13. Reg.- 72 Metallic fittings & supports of over head lines
All metallic fittings & supports shall be earthed in 3
points in every kilometre.
Stay wire shall be earthed
Reg.-90 Earthing of Guard wire
Every guard wire shall be earthed at each point at
which its electrical continuity as broken & shall also be
connected with rails at intervals of not more than 5
spans

14. at least we should all
remember that the following
 Make every a safety day.
 Life is precious than the money
value of wrongful interference in
electrical system.
 Best safety device is a careful
worker.
 Part of our job is to teach other to
be careful.