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1. INDIAN
INDIAN
ELECTRICITY
ELECTRICITY
RULE
RULE

2. INDIAN ELECTRICITY ACT – 1910
INDIAN ELECTRICITY ACT – 1910
AN OVERVIEW
AN OVERVIEW
1.
1. An Act on electricity in India was first
An Act on electricity in India was first
promulgated as back as 1887, which later
promulgated as back as 1887, which later
came to be called as Electricity Act { XIII }
came to be called as Electricity Act { XIII }
of 1887.
of 1887.
2.
2. Then came Calcutta Lighting Act, later
Then came Calcutta Lighting Act, later
came to be known as Bengal Act 1895
came to be known as Bengal Act 1895
3.
3. Act 1887 was subsequently revised and
Act 1887 was subsequently revised and
came to be known as the Act 1903.
came to be known as the Act 1903.
4.
4. Then came the Indian electricity Act 1910.
Then came the Indian electricity Act 1910.

3. SCOPE OF ACT
PART I: Contains the definitions of
technical terms used in IE Act 1910.
PART II: ( Sections 3 to 27 ) Refers to
supply of energy as far as the Licencee
PART III: (Sections 28 to 30 ) Refers to
supply, transmission and use of energy
PART IV: ( sections 31 to 58 ) Refers to
the protective clauses, Administration
and Rules and Criminal offences and
procedure.

4. SECTION 21(1) : A Licensee shall not be entitled to
prescribe any special form of
appliance for utilizing energy supplied by
him in any way to control or
interfere with the use of such energy.
SECTION 21(4) : Where any difference or dispute
arises as to whether a licensee has
prescribed any appliance or controlled or
interfered with the use of
energy in contravention of sub-
section (1) the matter shall be
referred to the Electrical
Inspector.
SECTION 24 : Discontinuance of supply to
consumer neglecting to pay
charges.
Section 24(1) & Section 24(2)
SECTION 26 : Meters

5. SECTION 28 : Bars any person who is not a licensee
to engage himself in the
business of supply of energy, except
with the consent of the State
Government.
SECTION 30 : Control of transmission and use of
energy.
No person other than a licensee shall
transmit and use energy at a
rate exceeding 250eatts and 100
volts in
 In any street
 In any
i. place where there is a
congregation of more than 100 persons
ii. factory
SECTION 33 : Notice of accidents and inquiries.
SECTION 36 : Appointment of Electrical Inspectors

6. SECTION 50 : Prosecution powers on any person
for any offence against the IE Act
1910.
SCHEDULE VI(3) : When the Supplier or the Licensee
has laid the distribution mains he is duty
bound to supply energy to such
persons within 30 days from the
date of such requisitions received
subject to
 payment of necessary security deposits
 security to the effect that he would avail supply
for a minimum period of two months.
 payment for the service mains beyond 100 feet
from distribution mains
The supplier shall continue to supply energy subject to
 Maintenance of security
 Uses the energy properly without interfering
with the efficient supply of energy

7. INDIAN ELECTRICITY RULES – 1956
INDIAN ELECTRICITY RULES – 1956
AN OVERVIEW
AN OVERVIEW
1.
1. Indian Electricity Rules – drafted &
Indian Electricity Rules – drafted &
notified under Section 37 of IE Act
notified under Section 37 of IE Act
1910
1910
2.
2. IE Rules contain general & specific
IE Rules contain general & specific
provision regarding safety & reliability
provision regarding safety & reliability
of electricity supply systems
of electricity supply systems
3.
3. The IE Rules supplement the various
The IE Rules supplement the various
codes of BIS
codes of BIS

8.  The RULES were initially framed during
The RULES were initially framed during
1922
1922
 Amended during the year 1939 and
Amended during the year 1939 and
 Finally amended during 1956.
Finally amended during 1956.
IE Rules have been framed to
IE Rules have been framed to
i.
i. Safe guard consumers of electrical
Safe guard consumers of electrical
energy from electrical shock
energy from electrical shock
ii.
ii. Minimise fire risk
Minimise fire risk
iii.
iii.Ensure as far as possible satisfactory
Ensure as far as possible satisfactory
operation of equipment and apparatus
operation of equipment and apparatus
used
used

9. SCOPE OF RULES
Chapter 1: Contains the definitions of
technical terms used and compliments
the definitions contained in IE Act 1910.
Chapter 2: Covers qualifications and
appointment of Electrical Inspectors and
officers to assist them.
Chapter 3: It deals with granting of
licence for supply of electricity.
Chapter 4 & 5: Covers safety
requirement.

10. Chapter 6: Specific safety provisions for
LV and MV equipments.
Chapter 7: Specific safety provisions for
HV and EHV.
Chapter 8: Provisions for overhead lines,
UG cables and generating stations.
Chapter 9: Specific safety provisions for
electric traction.
Chapter 10: Safety provisions for mines
and oil fields.
Chapter 11: Miscellaneous.

11. RULE 3 : Authorised persons for working in electrical
installations of supplier or consumer.
RULE 3(2A)(a) : Training requirement for persons working
in generating stations of capacity 100MW and
above.
RULE 3(2B) : Training requirement for persons working
in substations of 132KV and above.
RULE 3(4) : Mandatory to maintain a list of authorised
persons and produced before Electrical
Inspector on demand.
RULE 3(6) : In every register factory load exceeding
250KW there shall be a person authorised
by the management for ensuring electrical
safety.

12. RULE 4 : Qualification of Inspectors.
RULE 4A : Appointment of officers to assist an
Electrical Inspector.
RULE 4B : Qualification of assisting officers.
RULE 5 : Empowers inspecting officials to inspect and
test any electrical installation of the
Supplier, Consumer, owner and occupier at
any time.
RULE 6 : Right to appeal.
RULE 7 : Levy of testing and inspection fees and
generally for the services of the Inspector
by the Central Government and the State
Government as the case maybe.
RULE 8 : Electrical Inspector to decide on remittance

13. RULE 29 : Construction, installation, protection,
operation and maintenance of
electric supply lines and apparatus.
RULE 29(1) : Electric supply line and apparatus shall
be of sufficient rating, insulation and
estimated fault current level and of
sufficient mechanical strength, so as to
ensure safety of human beings, animals
and property.
RULE 29(2) : Relevant code of practices of BIS,
National Electrical Code may be followed to
ensure safety of human beings, animals
and property.
RULE 29(3) : The material and apparatus used shall
conform to the relevant specification.
RULE 30 : Supplier to ensure safety of his
equipment in consumer’s premises.

14. RULE 31 : Supplier to provide cutouts at consumer’s
premises and a cutout shall also be
provided by the owner.
RULE 32 : Proper distinction between live, neutral
and earth conductors.
RULE 33 : Supplier to provide and maintain earthing
terminal at consumer premises. In case
of MV,HV or EHV installations the consumer
shall, in addition to supplier earthing
arrangement provide his own
earthing system with an independent earth
electrode.
RULE 34 : Owner shall ensure that bare conductors
used in the buildings are inaccessible as
well as to provide in readily accessible position
suitable switches for rendering them dead.
RULE 35 : Danger notice in Hindi or English and
local language.

15. RULE 36 : Before any conductor or apparatus is
handled adequate precautions shall be
taken, by earthing or other suitable means,
to discharge electrically such conductor.
Working persons shall be Provided with all
necessary safety devices and tools.
No person shall work or shall assist any
person to work on electrical apparatus
unless he is authorised in that behalf.
RULE 41 : Electrical circuit must be
identified/labelled.
RULE 43 : Provision of fire buckets filled with clean
dry sand, fire estinguishers, first aid boxes, gas
masks etc.
RULE 44 : Refers to instructions for restoration of

16. RULE 44A : Intimation of electrical accidents which
could have resulted in loss of life are to
be reported to the Electrical Inspector.
RULE 45 : No person other than Licensed Electrical
Contractors and supervisors having
certificate of competency shall
carry out electrical installation work,
including addition and alteration,
repairs etc. on the premises of or on behalf of
any consumer, supplier, owner or occupier.
RULE 46 : Periodical inspection of electrical
installation word “Consumer” has been
deleted from the title w.e.f. 11th
Nov.,
2000. Also periodical inspection of HV
and EHV installations of Suppliers have been
included.

17. RULE 47 :Supplier to test the installations before
connecting the supply or reconnecting.
RULE 47A :Approval is required for DG sets of
capacity exceeding 10KW.
RULE 48 :The minimum insulation resistance values
before charging shall be as follows:
LV and MV: At least 1MEGA-OHM or as specified in
the relevant BIS specification, at a
pressure of 500V DC applied between
each live conductor and earth for a
period of 1 minute.
HV : At least 5 MEGHA-OHM or as specified
in the relevant BIS specification, at a
pressure of 2.5KV DC applied between
each live conductor and earth for a
period of 1 minute.

18. RULE 50 :(i) Circuit breaker shall be provided on
primary side of all transformers having
a capacity of 5000 KVA and above and
installed before the commencement of
the I.E.(Amendment-1) Rule, 2000 and
having capacity 1000 KVA and above
and installed on or after the
commencement of the I.E.(Amendment-
1)Rule, 2000.
(ii) Circuit breaker of adequate rating shall
be installed on the secondary side of all
the Transformers transforming HV to
EHV, MV or LV, installed on or after the
commencement of I.E.(Amendment-1)
Rule, 2000.
In respect of suppliers
transformers of capacity above 630
KVA shall be provided with circuit breakers

19. RULE 50A :Additional provisions for supply and use
of energy in multistoreyed buildings.
RULE 51 :Provisions applicable to medium / high
/EHV installations.
(i) Space of 1 metre for the board in
front.
(ii) Less than 200 mm or more than
750 mm behind.
(iii) If the space behind exceeds
750mm passage way on either
end with clear height of 1.8 metres.
Supplier to ensure compliance of Rule
50,63 &64 before servicing any
installation.
RULE 52 :Provision for consumer to appeal against
the direction of disconnection of defective

20. RULE 54 : Declared voltage of supply to consumer.
RULE 55 : Declared frequency of supply to
consumer.
RULE 56 : Supplier to provide seal and no one to
break it.
RULE 57 : Provisions of meters, maximum demand
indicators and other apparatus on
consumer’s premises.
RULE 59 : Precautions against failure of supply and
notice of failures.

21. RULE 61 : Connection with earth.
RULE 61(1) : System as well as neutral earthing.
RULE 61(2) : Protective frame earthing.
RULE 61(3) : Conduit/ Junction box earthing.
RULE 61(4) : Earthing system design/ performance
requirements.
RULE 61(5) : All earthing systems belonging to the
Supplier shall be tested for
resistance on dry day during dry season not
less than once in two years. The records shall
be made available to the Electrical
Inspector as and when required.
RULE 61A : All low voltage installations of 5KW and
above shall be controlled by earth leakage
protective device to disconnect supply
instantly on earth fault or leakage.

22. RULE 63 : Prior approval of the Electrical Inspector is
required.
RULE 63(3) : Additions and alterations shall not be connected
unless the same is approved by the EI.
RULE 64 : All conductors and apparatus shall be
inaccessible except to an authorised person.
RULE 64(2)(a)(i) : Clearances for electrical apparatus shall be
provided as per Indian Standard Code for
easy operation and maintenance.
The owner of the transformer
installation shall not allow any encroachment
below such installations. The electrical
Inspector shall direct appropriate law
enforcing authorities to remove such
encroachments, if in his/her opinion such
encroachments are hazardous to operating
personnel/public person or property.

23. RULE 64(2)(a)(ii) : Minimum safety working
clearances shall be maintained for bare
conductors excluding
overhead lines,
Highest system
voltage
Safety working Clearance (metres)
12KV 2.6
36KV 2.8
72.5KV 3.1
145KV 3.7
245KV 4.3
420KV 6.4
800KV 10.3

24. RULE 64(2)(d) : Substation or switch station with
apparatus having more than 2000
litres of oil shall not be located in the
basement floor.
RULE 64(2)(e) : Substation or switch station installed
indoor or outdoor with apparatus
having more than 2000 litres of oil
following means shall be provided.
i. Baffle walls with 4 hours of rating.
ii. Oil soak pit provision.
If oil capacity exceeds 9000 litres,
i. Draining arrangement.
ii. Prevent spreading of fire.
iii. Spare oil shall not be stored.
RULE 64(2)(e)(iii) : All transformers & switchgear shall be
maintained in accordance with
relevant code of BIS and the records to be
maintained by an authorised person.

25. Refer for Transformer IS: 10028 (Part III)
Maintenance 1981
Switchgear IS: 10118 (Part IV)
Maintenance 1982
RULE 64(2)(e)(iv) : Only dry transformer shall be
installed indoors at residential /
commercial buildings.
RULE 64(2)(f): Substation installation at basement
 Room shall be at the first basement at the
periphery of the basement.
 Fire proof door or fire check door with 2 hours
fire resistance
 Curb to prevent flow of oil and direct access
to transformer from outside.
 Nitrogen injection and drain method in
addition to other options like water spray or CO2 or
BCF or BTM.
 Oil filled transformers not above ground or

26. RULE 64A : Additional safety provision for use of
energy at HV and EHV.
(Interlocking and protective relays)
RULE 64(A)(2)(e) : With effect from Nov 2000 in addition
to Buchholz ( Gas pressure type )
protection, oil temparature and
winding temparature
protection to give alarm and trip
protection has been made
mandatory for transformers of
rating 1000KVA and above.
RULE 64(A)(2)(f) : High speed busbar differential
protection and local breaker
back up protection has been
made mandatory at all 220KV
substation / switchyard w.e.f Nov
2000.

27. RULE 70 : Condensers
RULE 71 : Additional provisions for supply to
high voltage luminous tube sign
installation.
RULE 72 : Additional provisions for supply to
high voltage electrode boilers.
RULE 73 : Additional provisions for supply to X-
ray and high frequency installation.

28. RULE 74 : Material and strength of overhead
conductors.
 Breaking strength of not less than 350 kg
 150 kg for LV with span length < 15
metres.
RULE 75 : Joints not more than 2 in a span.
RULE 76 : Maximum stress and Factor of safety
 Metal supports 1.5
 Mechanically processed 2.0
concrete supports
 Hand moulded concrete supports 2.5
 wood supports 3.0
RULE 77 : Ground clearances of lowest wire
Clearances LV/MV HV Above 11KV
Across a street 5.8 6.1 --
Along any street 5.5 5.8 --
Else where
Else where 4.6 4.6 5.2

29. RULE 79 : Clearances of OH lines from
buildings
 Horizontal clearance of 1.2 metres.
 Vertical clearance of 2.5
metres.
RULE 80 : Clearances of HV & EHV lines from
buildings
RULE 81 : Conductors at different voltages on
same supports
RULE 82 : Errection of or alteration to
buildings, structures, flood banks
and elevation of roads.
Contravention of Rules 77, 79 or 80
Clearances > 11KV upto 33KV EHV > 33KV
Vertical 3.7 3.7 + 0.3 for every 33KV
Horizontal 2.0 2.0 + 0.3 for every 33KV

30. RULE 82A : Transporting and storing of
materials near overhead lines.
( 79 & 80 )
RULE 85 : Maximum intervals between
supports.
RULE 86 : Power lines and Telecommunication
lines on same supports.
RULE 87 : Lines crossing or approaching each
other.
Nominal system
voltage
11-66KV 110-132KV 220KV 400KV 800KV
Low and medium 2.44 3.05 4.58 5.49 7.94
11-66KV 2.44 3.05 4.58 5.49 7.94
110-132KV 3.05 3.05 4.58 5.49 7.94
220KV 4.58 4.58 4.58 5.49 7.94
400KV 5.49 5.49 5.49 5.49 7.94
800KV 7.94 7.94 7.94 7.94 7.94

31. RULE 89 : Service line tapping from an OH line
shall be at a point of support.
RULE 90 : Earthing of electric pole supports.
 All elctric line supports and metallic fittings
shall be earthed.
 Metallic bearer wire supporting insulated
wires of service mains shall be earthed
 Each stay wire shall be earthed unless stay
insulator has been provided at not less than 3.0
metres above ground
RULE 91 : Protection of overhead lines
CBs, ACDs
RULE 92 : Protection of OH lines against
lightning
 Earthing lead to be taken directly to the earth
electrode as for as possible avoiding any bends
wherever practicable.

32. RULE 94 to RULE 108 contains specific safety provisions
for electric traction used in Indian Railways.
RULE 94 to RULE 108 contains additional safety
provisions to be adopted in mines and oil-fields
RULE 116 : Amended in the year 2000. provision
for automatic disconnection fo
supply in mines in case of earth
fault. Earth fault current shall not be
allowed to exceed 750 milliamps.
The magnitude of earth fault
current shall be limited by
resistance grounding of neutrals.

33. MISCELLANEOUS
RULE 133 : The State Government or where mines,
oilfields or Railways or works executed
or on behalf of the Central Government
are affected the Central Government may
relax the provisions of the Rules other
than the provisions of Rule 44A and
Rule 46.
RULE 134 : The Inspector may relax the Rules 44,
50(1)(a),(b) & (d), 50A(2), 51(1),
61(2), 63, 64(2), 65, 71 to 73 (inclusive ), 76 to
80 (inclusive ), 90, 118, 119(1)(a),123(5),
123(7), 123(9) and 130.
Penalty for breach of Rules and appeals: Rule 138 penalty for
breaking seal, Rule 138A penalty for breach of Rule 44A,
Rule139 penalty for breach of Rule 45, Rule 140 penalty for
breach of Rule 82, Rule 140A penalty for breach of Rules
77,79 or 80, Rule 141 penalty for breach of Rules.

34. THE ELECTRICITY ACT – 2003
THE ELECTRICITY ACT – 2003
1.
1. To encourage private sector
To encourage private sector
participation in generation,
participation in generation,
transmission and distribution
transmission and distribution
2.
2. Regulating responsibilities to
Regulating responsibilities to
Regulatory commissions.
Regulatory commissions.
3.
3. Flexibility to the State Government to
Flexibility to the State Government to
develop their power sector
develop their power sector
MAIN OBJECTIVES
MAIN OBJECTIVES

35. EI

36. Brief Description of the
Brief Description of the
Department
Department
 Consequent to formation of the Indian Electricity Rules
Consequent to formation of the Indian Electricity Rules
1956, The Department of Electrical Inspectorate
1956, The Department of Electrical Inspectorate
formed during the year 1957 in every state of the
formed during the year 1957 in every state of the
nation to implement electricity safety rules and code of
nation to implement electricity safety rules and code of
practices in the power sector covering generation,
practices in the power sector covering generation,
transmission & distribution.
transmission & distribution.
The major functions of the department are
The major functions of the department are
1.
1. Inspection of Electrical installations and issue of
Inspection of Electrical installations and issue of
electricity fitness certificates in case of HT, EHT, Captive
electricity fitness certificates in case of HT, EHT, Captive
Power Installations, Cinemas, X-Rays, Lifts and of
Power Installations, Cinemas, X-Rays, Lifts and of
course the electrical installations of suppliers.
course the electrical installations of suppliers.
2.
2. Investigation into cause of electrical accidents to
Investigation into cause of electrical accidents to
human beings and animals.
human beings and animals.

37. Functions of the Department
Functions of the Department
 Regulation of generation, transmission,
Regulation of generation, transmission,
supply & use of energy.
supply & use of energy.
 Administering (I.E Act 1910) Electricity
Administering (I.E Act 1910) Electricity
Act 2003, I.E Rules 1956 & various other
Act 2003, I.E Rules 1956 & various other
State Acts & Rules to ensure safety of
State Acts & Rules to ensure safety of
the equipment, operating personnel &
the equipment, operating personnel &
general public.
general public.
 Precommissioning inspection of MV &
Precommissioning inspection of MV &
LT installations by KPTCL.
LT installations by KPTCL.

38.  Precommissioning inspections of :-
Precommissioning inspections of :-
 1.Generating station
1.Generating station
 2.MUSS
2.MUSS
 3.Sub Station
3.Sub Station
 4.Distribution transformer centers
4.Distribution transformer centers
 5.CG sets
5.CG sets
 6.Lifts
6.Lifts
 7.Cinema Installations
7.Cinema Installations
 8.MS Buildings
8.MS Buildings
 9.IPP’s installations
9.IPP’s installations
 10.X-Rays & Neon Signs
10.X-Rays & Neon Signs

39. Other Functions of the
Other Functions of the
department
department
 Under (I.E Act 1910)
Under (I.E Act 1910)
1.Investigation of Electrical Accidents &
1.Investigation of Electrical Accidents &
enquiry into the same.
enquiry into the same.
2.Instituion of prosecution for Breach of
2.Instituion of prosecution for Breach of
Acts and Rules
Acts and Rules
3.Adjudication of disputes
3.Adjudication of disputes
 Under I.E rules 1956
Under I.E rules 1956
1. I.I of EHV, HV, DG, MS Buildings, Neon,
1. I.I of EHV, HV, DG, MS Buildings, Neon,
X-Rays.
X-Rays.
2.P.I of above installations, supplier
2.P.I of above installations, supplier
installations, MV & LT installations
installations, MV & LT installations

40. In addition the State of Karnataka has few other
Acts and Rules catering to various other kinds of
installations such as :
a) Karnataka Licensing Rules 1976.
b) Karnataka Lift Act 1974 and Lift Rules
1976.
c) Karnataka Cinematography Act 1964 and
Rules 1971.
d) Karnataka Taxation on Consumption Act
1959.
e) Karnataka Video Rules 1984.

41.  Under Karnataka Cinematography
Under Karnataka Cinematography
Act & Rules
Act & Rules
 1.Scrutiny of application & electrical
1.Scrutiny of application & electrical
drawings of Cinema installation
drawings of Cinema installation
 2.I.I of all permanent, semi-permanent &
2.I.I of all permanent, semi-permanent &
temporary theaters & grant of safety
temporary theaters & grant of safety
certificates.
certificates.
 3.P.I of all the above installations &
3.P.I of all the above installations &
grant of safety certificates
grant of safety certificates

42.  Under Karnataka Video Cassette
Under Karnataka Video Cassette
Recorder Rules 1984.
Recorder Rules 1984.
 1.Scrutiny, Inspection of above
1.Scrutiny, Inspection of above
installation and grant of safety
installation and grant of safety
certificates
certificates
 2.Conducting Periodical Inspection of
2.Conducting Periodical Inspection of
Video Installation
Video Installation

43.  Under Karnataka Lift Act & Rules
Under Karnataka Lift Act & Rules
 1.Processing the applications for
1.Processing the applications for
permission to erect lifts & escalators.
permission to erect lifts & escalators.
 2.I.I of lifts installed before
2.I.I of lifts installed before
commissioning.
commissioning.
 3.P.I of above lifts & escalators.
3.P.I of above lifts & escalators.
 4.Scrutiny of applications for enlistment
4.Scrutiny of applications for enlistment
of manufacturers/suppliers of lifts
of manufacturers/suppliers of lifts
 5.Investigation of Lift accidents.
5.Investigation of Lift accidents.

44.  Administration of Karnataka (Licensing of Electrical
Administration of Karnataka (Licensing of Electrical
contractors and grant of certificates & permits to
contractors and grant of certificates & permits to
electrical supervisors and wiremen) Rules 1976.
electrical supervisors and wiremen) Rules 1976.
 1.Grant of Licenses to contractors
1.Grant of Licenses to contractors
 2.Grant of permits to supervisors
2.Grant of permits to supervisors
 3.Grant of permits to wiremen
3.Grant of permits to wiremen
 4.Grant of special wiring certificates
4.Grant of special wiring certificates
 5.Conducting meetings of LA & EB
5.Conducting meetings of LA & EB
 6.Conducting examination/supervisors, wiremen, mining
6.Conducting examination/supervisors, wiremen, mining
supervisors
supervisors
 7.Renewal of Licenses & permits
7.Renewal of Licenses & permits
 8.Enquiring into disputes b/w supplier & LEC & b/w LEC &
8.Enquiring into disputes b/w supplier & LEC & b/w LEC &
consumers regarding quality of materials and work.
consumers regarding quality of materials and work.

45. Administration of Karnataka Electricity
Administration of Karnataka Electricity
(Taxation on consumption) Act 1959
(Taxation on consumption) Act 1959
 Supervision and accounting of revenue to
Supervision and accounting of revenue to
State Govt. collection of taxes from KPTCL,
State Govt. collection of taxes from KPTCL,
KPCL, Hukkeri Electricity Co-operative Society
KPCL, Hukkeri Electricity Co-operative Society
& other Licenses.
& other Licenses.
 Follow-up action on monthly statements of
Follow-up action on monthly statements of
taxes from the above.
taxes from the above.
 Arranging payment of rebate to the above.
Arranging payment of rebate to the above.
 Random inspection of tax accounts on the
Random inspection of tax accounts on the
above.
above.
 Collection of Electricity tax of approximately
Collection of Electricity tax of approximately
160 crores p.a.
160 crores p.a.

46. Protection of Consumer Interests
Protection of Consumer Interests
by an Electrical Inspector
by an Electrical Inspector
Who can Appeal to an Electrical Inspector?
Who can Appeal to an Electrical Inspector?
Any person aggrieved by
Any person aggrieved by
1.A back bill served by KPTCL
1.A back bill served by KPTCL
2.Testing of the energy meter
2.Testing of the energy meter
3.Recording of the meter
3.Recording of the meter
4.Disconnection of the installations
4.Disconnection of the installations
5.Load computed wrongly by KPTCL in a ETV meter
5.Load computed wrongly by KPTCL in a ETV meter
installation
installation
6.Unnecessary intervention/interference by KPTCL
6.Unnecessary intervention/interference by KPTCL
7.Cost of service line or security offered
7.Cost of service line or security offered
8.Positioning of the meter board
8.Positioning of the meter board
9.Defect in wires, fittings, works or apparatus
9.Defect in wires, fittings, works or apparatus

47. X-RAY INSTALLATION
1. X-ray room shall be located as far as possible away from areas of high
occupancy and from maternity / pediatric wards in the hospital.
2. There shall be only one door for entry to X-ray room.
3. Minimum size of X-ray room shall be 25sq.mts.
4. Structural shielding shall be provided against radiation walls. Walls shall be of
approximately 23cms thick.
5. Unshield openings in X-ray rooms shall be minimum 2 m above ground.
6. Room housing fluoroscopy equipment must be so designed that
adequate darkness can be achieved conveniently when desired in the
room. A suitable red light must be provided in the room for the use of
radiologist after dark adaptation.
7. X-ray equipment shall be installed in such a way that in normal use the
useful beam is not directed towards control panels, doors, windows, dark
room or areas oh high occupancy.

48. 8. In the case of diagnostic X-ray equipment operating at 125KV or
above, the control panel must be installed in a separate room, provided
with appropriate shielding, direct viewing and oral communication
facilities between the operator and the patient.
9. Adequate clearence shall be provided around equipment and control
panel for easy and convenient operation.
10.High voltage parts of the X-ray apparatus shall be rendered shock
proof by an adequate insulating material or shielding by earthed
metal.
11.Extra high voltage generator operating at 300 peak KV or more shall be
installed in rooms separate from those containing the other equipment.
The step up transformer shall be installed and protected to prevent
danger.
12. A suitable switch shall be provided to control the circuit supplying
the generator.
13. X-ray tubes used in therapy shall be mounted in an earthed metal
enclosure.
14. ELCB of sufficient rating shall be provided on the low voltage side

49. 15. In the case of non-shock-proof equipment overhead high voltage
conductors, unless guarded against personal contact, shall be
adequately spaced and high voltage leads on tilting tables and
fluoroscopes shall be adequately insulated or so surrounded by
barriers as to prevent inadvertent contact.
16. The low voltage circuit of the step up transformer shall contain a
manually operated control device having overload protection, in
addition to the over current device for circuit protection, and these
devices shall have no exposed live parts.
17. If more than one piece of apparatus is required to be operated from
the same high or extra-high voltage source each shall be provided
with a high or extra high voltage switch for independent control.
18. Low frequency current carrying parts of a machine shall be insulated
or guarded so that they cannot be touched during operation.
19. All non current carrying metal parts of tube stands, fluoroscopes and
other apparatus shall be properly earthed.
20. Insulating floors, mats or platforms shall be provided for operators.
21. A suitable warning signal such as red light must be provided at

50. NEON-SIGNS
1. Neon-sign boards should be structurally stable.
2. All live parts of the installation including all apparatus and live conductors
in the secondary circuit, but excluding the tubes except in the
neighbourhood of their terminals shall be inaccessible to
unauthorised persons.
3. HT transformers should be adequately enclosed in a vermin proof and
dust proof enclosure and there should not be any exposed live parts.
4. HT interconnection should be done with cables of adequate insulation and
the joints should be soldered properly.
5. Mid point of HT winding of Neon transformers should be rigidly connected
to the body of the transformer and therefore to the transformer enclosure
by duplicate earth connection of No. 10 SWG copper wire. The
transformer enclosure should be rigidly connected to the Neon-sign frame
and the frame shall be provided with duplicate earthing.

51. 6. ELCB of sufficient rating shall be provided on the low voltage side to
detect current leakage.
7. Neon-sign board should be provided with separate earthing scheme.
8. Suitable adjacent means for disconnecting all 3 phases except the
neutral shall be provided for an interior installation.
9. A suitable emergency fire-proof linked switch to operate on all phases
except the neutral in a 3 phase 4 wire circuit shall be provided and
fixed in a conspicuous position at not more than 2.75 m for a Neon-
sign installation proposed exterior of a building.
10. Main wiring should be done using rigid metal PVC conduits.
11. On the Neon-sign enclosure special caution notice “ DO NOT OPEN
WHEN SUPPLY IS ON “ sign should be conspicuously marked and
standard danger board provided nearby the Neon-sign.

52. MULTI-STORIED BUILDINGS
1. A building that is more than 15metres in height shall be categorised as
multi-storied building.
2. A suitable isolating device with cutout or breaker to operate on all the
phases except the neutral shall be provided at the point of
commencement of supply at a conspicuous position at not more than
2.75metres above the ground.
3. The cables shall be taken in the electrical duct and no other service
pipes shall run through these ducts. Fire barriers shall be provided at
each floor crossing the duct.
4. The inspection panel door and any other opening in the electrical duct
shall be provided with fire proof door.
5. In a commercial multistoried building there shall be at least two rising
mains located in separate shafts. Each floor shall have a changeover
switch for connection to either of the two mains. In case of residential
multistoried building a separate cable shall be laid to each individual
apartment.

53. 6. Dedicated feeder shall be provided for fire lift, fire alarm, fire pumps etc.
7. Separate circuits for water pumps, lifts, staircases and corridor lighting and
blowers for pressurising system shall be provided from the main
switchgear panel and these circuits shall be laid in separate conduits.
8. All switch gear equipment shall be metal enclosed.
9. Two numbers adequate size earthing bus shall be drawn along the
entire electrical duct.
10. Lift with imperforated doors shall be provided in multistoreyed
buildings.
11. Fire alarm shall be provided at each individual floor of the
M.S.building. A fire alarm control panel shall be located at the very
entrance of the building or inside the security room.
12. Fire hydrant system with fire hydrant pumps, booster pumps of
adequate rating, wet riser, hose reel, single / double head hydrant
valves, smoke detectors, heat detectors, manual call point and talk
back arrangements shall be provided at multi-storied buildings with
height of 24metres and above.

54. 13.Lightning protection at multi-storied buildings shall be in accordance
with I.S.2309/1989
Structure having base area not exceeding 100 sqmts.
Should have only one down conductor
Structure having base area exceeding 100 sqmts. The
number of down conductor shall be the smaller of the following
One + additional one for each 300 sqmts. Or part there of
in excess of first 100 sqmts.
One for each 30m of perimeter of the structure protected.
14.Aviation lamps shall be provided on the top of the building.
15.Generator and transformers shall be installed at the periphery of the
building having easy access and ventilation.
16.Only dry type transformers shall be installed inside the multi-storied
buildings.
17.Low set E/F protection using neutral CT is not to be insisted for
transformers feeding M.S.Building where LT metering is adopted, but
ELCBs shall be provided for all DBs and motor loads except for fire
pump motors.

55. 18. Metering panels shall be installed at ground floor.
19. Diversity factor shall be maximum 2.
20. Maximum number of ways in 3 phase lighting DBs shall be 8.
21. Wiring shall conform to IS 732, IS4648 and NEC 1985.
22. Generators of adequate capacity / rating shall be installed to feed
essential loads. Generator capacity shall be minimum 20% of total
connected load. The generator rating shall be 6 times the rating of
lift motor and 4 times of lift motor in the case of VVVF lift motor.
23. When emergency supply is extended to individual consumers, it
shall be through an emergency DB only.
24. Exhaust pipe of DG set shall be brought above roof top.
25. Accoustic arrangements shall be provided for the generator sets to
limit sound level below 70 db.

56. HT SUBSTATION
1. The consumer’s DP/TP/FP structure shall be erected such that its
location lies between 4.5m to 15.25 m from the Supplier’s DP
structure.
2. The supports should be of RCC/RSJ/Tubular pole with concrete
foundation. Tubular poles shall be provided with pole caps.
3. The consumer DP structure if located within 15feet and is in
alignment with the incoming lines the structures should be braced
together and stays avoided.
4. The Group operating switch (GOS) should be of Two insulator
type/ Three insulator type.
5. The GOS operating handle should be erected at a height of 1.1m
to 1.2m.
6. Two vanes should be provided for the GOS operating rod .
7. The operating rod of the GOS should be provided with flexible
earth connection.

57. 8. A minimum clearance of not less than 2m shall be maintained
between the supporting frame of HG fuse and the live part of the
GOS.
9. Unsupported length of stranded copper or aluminium jumper
should not exceed 1.5m.
10. Unsupported length of solid aluminium jumper should not
exceed 2.4m.
11. Lightning Arrester should be connected after the GOS before the
HG fuse for protection of down stream equipments like breaker,
transformer etc.,
12. The earthing lead of lightning arrester shall be of No.6 SWG
copper or its equivalent GI wire taken on either ends and shall be taken as
directly as possible and should not be routed through conduit or
pipe.
13. A separate earth electrode shall be provided for the lightning
arrester.
Metal frame work supporting GOS, HG fuse, and stay clamps,
insulator pins shall be effectively earthed by No.8 SWG copper or
equivalent GI wire.

58. 14. Fencing of height not less than 1.8m shall be erected around the
substation with spacing between DP structure pole and fence
being 1.5m.
15. The DP structure yard within the fence shall be uniformly levelled
and spread with sharp edged 38mm blue granite jelly to a depth of
150mm.
16. Lock shall be provided for the GOS operating handle and an
arrow mark indicating the open/close direction shall be provided.
17. The leg of the DP structure shall be driven to a depth of atleast
1/6th of the pole height with all-round foundation concreting. The
concreting shall be extended to a minimum height of 450mm above
ground level with coping.
18. Danger board in Hindi, English and local language along with
symbol of skull and bone shall be fixed, one on the structure and another
on the gate of fence. The class of voltage shall also be mentioned.
19. The vertical clearance of the EHT line above the highest part of
the building on the basis of maximum sag shall be as per Rule 80(1)
of I.E.Rules 1956.

59. 20. The horizontal clearance of the nearest EHT conductor from the
building on the basis of maximum deflection due to wind pressure
shall be as per Rule 80(2) of I.E.Rules 1956.
21. Transformer installation:
a. Outdoor
Only two transformers are to be permitted on an outdoor 4
pole structure substation. For more than two transformers a 6
pole or 8 pole structure substation should be provided.
Minimum safety working clearance for bare conductors or
live parts of any apparatus other than overhead lines shall be
maintained at 2.6m for 11KV and 2.8m for 33KV installations
The transformer plinth shall be provided based on roller
spacing. The dimension of the plinth shall be such that no
person shall step on the plinth and inadvertently come
close to live parts.
The height of the plinth shall be for
Transformer with 11KV bushings: The height of the plinth
shall be such that top of 11KV bushings shall be at a height
not less than 2.6m above ground level.
Transformer with 11KV cable end box To suit site conditions
but a minimum of 450mm

60. A minimum clearance of 750mm shall be provided all-round
the transformer.
If transformer is located in outdoor yard away from
buildings all-round fencing will be sufficient.
In case walls are provided on any side or if a
building wall is adjoining the transformer, these walls shall prevent
spread of fire. The thickness of the wall shall be 230mm for
RCC wall and 335mm for brick wall.
If the transformer oil capacity exceeds 2000 litres
the transformer should be located 6m away any building
including the substation.
If transformers are installed in cluster and having
more than 2000 litres fire rating separating walls shall be
provided. In addition the following measure shall be taken
1.The baffle walls of 4 hours fire rating shall be provided
between the apparatus
2. Provision shall be made for suitable oil soak pit and
where use of more than 9000 litres of oil is involved provision
shall be made for draining oil during fire hazard.

61. 3. Separating walls wiil not be required if the distance
between the transformers is maintained as given below
Oil capacity of individual transformers separating distance
Above 2000lts upto 5000lts 6m
Above 5000lts upto 10000lts 8m
Above 10000lts upto 20000lts 10m
Above 20000lts upto 30000lts 12.5m
Above 30000lts 15m
b. Indoor transformer
Bushing type transformer should not be installed indoors.
Oil filled transformers installed indoor shall not be on any floor
above the ground or below the first basement.
A minimum clearance of 1500mm shall be provided all-round the
transformer.
The height of the plinth shall be 450mm.
If transformers are installed in cluster and having more than 2000
litres fire rating separating walls shall be provided. In addition the
following measure shall be taken
1. The baffle walls of 4 hours fire rating shall be provided between the
apparatus

62. 2. Provision shall be made for suitable oil soak pit and where
use of more than 9000 litres of oil is involved provision
shall be made for draining oil during fire hazard.
3. Separating walls wiil not be required if the distance
between the transformers is maintained as given below
Oil capacity of individual transformers separating distance
Above 2000lts upto 5000lts 6m
Above 5000lts upto 10000lts 8m
Above 10000lts upto 20000lts 10m
Above 20000lts upto 30000lts 12.5m
Above 30000lts 15m
If the oil content of the transformer is more than 2000litres it shall
not be located in the basement floor.
The transformers shall be protected by an automatic high velocity
water spray system or by carbon dioxide or BCF ( Bromochloro-
difluromethane) or BTM ( Bromotrifluromethane ) fixed installation
system or Nitrogen injection and drain method.
Only dry type transformers shall installed inside the residential /
commercial buildings.
The room shall be adequately ventilated and the walls shall be of
fire rated type.
Minimum clearance of 1.5m shall be maintained between the top
most part of the transformer and the bottom most level of ceiling.

63. Fire rated doors and windows shall be provided for the transformer
room.
The floor of the transformer room shall be sloped to one corner to
facilitate easy removal of leaked / spilled oil.
c. primary protection
A linked switch with fuse or circuit breaker at installations having
aggregate installed transformer / apparatus capacity upto
1000KVA for 11KV and 2500KVA for 33KV shall be provided.
For installation of aggregate capacity 1000KVA and above for
11KV and 2500KVA and above for 33KV a circuit breaker of adequate
capacity shall be provided.
A linked switch with fuse or circuit breaker of adequate shall be
provided for every transformer.
For every transformers having capacity 1000KVA and above and
installed on or after the commencement of the Indian Electricity
(1st amendment ) Rules 2000 a circuit breaker shall be provided.
d. secondary protection
Adequate rating circuit breaker shall be provided for all
transformers installed on or after the commencement of the Indian
Electricity (1st amendment ) Rules 2000 .
For Supplier’s transformers up to 630KVA a linked switch with fuse
or circuit breaker of adequate capacity shall be provided.

64. e. protection
Over current protection
Earth fault protection
Gas pressure type and winding and oil temperature protection
Differential protection for transformers with 1000KVA and above
Over flux protection
The minimum rupturing capacity of 33KV, 11KV and MV breakers
shall be 750MVA, 250MVA and 25MVA respectively.
f. earthing
The metallic parts of the transformer shall be earthed by two
separate and distinct connections to the earthing system
The neutral point of every transformer shall be earthed by
connecting it to the earthing system by not less than two separate
and distinct connections
A copper strip looping between the top cover of the transformer
and the tank of the transformer shall be provided to avoid fault current
passing through the fastening belts
The metallic sheath of the cable should be earthed at cable ends /
cable gland.

65. 22. The silica jel in the breather shall be blue in colour.
22. Minimum insulation resistance IR of the windings of power
transformer with 33KV and with 11KV at 30 deg C with 5000V Megger
shall be 400Mohms and 300Mohms respectively.
24. HT Switch Board:
The HT switchgear room shall be separated and the room shall be
provided with fire rated brick walls.
Danger notice shall be provided on the HT switchgear
Metallic casing of the HT switchgear should be earthed by two
separate and distinct earth connections of proper size
A minimum clearance of 750mm shall be provided on the sides
and back of the HT switchgear
A clear space of 1m should be provided in front of the switch
board. In case the circuit breakers are of draw out type the
clearance should not be less than 1800mm
High voltage cable trenches should be provided with non-
inflammable slabs and should be filled with dry sand
Fire estinguishers suitable for electric firesand round bottom fire
buckets with clear dry sand conspicuously marked should be kept
in easily accessible position near the switchgear enclosure
A rubber mat shall be spread in front of the HT switch board

66. 25.LT Switch Board:
The HT and LT switchgear rooms shall be kept clean and tidy and
should not be used as a storage room
A minimum clearance of 1800mm should be provided between HT
and LT switchgears
Danger notice shall be provided on the LT switchgear
Metallic casing of the LT switchgear should be earthed by two
separate and distinct earth connections of proper size
A clear space of 1m should be provided in front of the switch
board.
A minimum clearance of 750mm shall be provided on the sides
and back of the LT switchgear in all cases of cable entries or bare
connections at the rear. Clearance less than 200mm may be permitted if
there are no cable entries or bare connections at the rear.
A passage way clear to a height of 1800mm should be provided on
either end of the switch board when the clearance at the back
exceeds 750mm.
Each outgoing distinct circuits from the switch board should be
separately controlled by a suitable linked switch fuse or circuit breaker of
adequate capacity.

67. Each of the different circuits shall be distinctly identified.
The control cables and the power cables at the LT switch board shall
be segregated.
4 pole change over switches of adequate capacity or fuses / circuit
breakers with mechanical arrangement should be provided in the LT
switch board to avoid paralleling of transformer supply and generator
supply.

68. GENERATOR INSTALLATION
1. Generator room shall be made up of non-inflammable materials.
2. Minimum clearance of 1m shall be provided all-round the generator.
3. When two generator sets are installed side by side minimum of 1.8m
clearance shall be provided between them.
4. The frame of the generator should be earthed by two separate and
distinct earth connections.
5. The neutral of the generator shall be earthed by two separate and
distinct earth connections.
6. The neutral shall be provided with an adequate rating isolator.
7. Exhaust pipe of DG sets shall be provided with thermal insulation to a
height of 2600mm above ground level.
8. Fuel tank of DG sets shall be placed outside the generator room.
9. The generator panel should be erected with a clearance of 750mm on 3
sides and a clear space of 1000mm in front of the panel.
10. Metallic casing of the control panel should be earthed by two
separate and distinct connections with earth.
11. Generator panels shall be made vermin proof.
12. Voltmeter and frequency meter shall be provided in the GCP
before the circuit breaker.
13. Energymeter, 3ph ammeter, KW meter and P.F.meter shall also be
provided in the GCP.
14. Switch ratings, cable size, earthing conductor sizes etc shall be
designed considering fault current.

69. 15. Accoustic arrangements shall be provided for generator sets
installed in residential / commercial area to limit sound level below 70db at
outside.
16. Generator protection:
Upto 100KVA : MCB/MCCB
100KVA upto 250KVA : MCCB and low set standby E/F relay
using neutral CT
250KVA upto 1MVA : ACB with thermal O/L and E/F
releases, low set standby E/F relay,
REF protection with fuel shut off arrangement
with D.C. trip.
1MVA and above : ACB with thermal O/L, voltage
controlled O/C relay, over voltage, under
voltage, over speed, negative sequence, low
set standby E/F relays and REF/differential
relay with fuel shut off facilities.
17. HV generators:
The neutral of the generator shall be earthed through NGR or
earthing transformer. If NGR is used it shall be rated for 30 secs.
If resistance/ transformer earthing is adopted for neutral,
generator supply cable and neutral cable shall be rated for voltage
same as that for unearthed system.
VCB with DC trip shall be provided for generator control.

70. Following protections shall be provided for HV generators:
Voltage restraint O/C relay.
E/F relay
Standby E/F relay using neutral CT
Over voltage relay
Under voltage relay
REF / Differential relay
Negative sequence relay
Rotor E/F relay
Field failure relay
Winding temperature high, alarm and trip
-dv/dt and df/dt relays ( when connected to grid )
Reverse Power and Reverse reactive Power relays (when
connected to grid )
Following protections shall be provided for Diesel Engine:
High vibration alarm and trip ( Max: 7mm/sec )
High bearing temperature alarm and trip ( Max: 95 deg C )
Over speed and Under speed alarm and trip
Exhaust gas temperature high alarm and trip
Charge Air temperature high alarm and trip
Jacket water temperature high alarm and trip
Lubricating oil temperature high alarm and trip
Lubricating oil pressure low alarm and trip

71. 18.Generators running in parallel:
Neutral switching facility shall be provided. When running in parallel
neutral of largest capacity generator shall only be earthed, while
neutrals of other generators shall bein floating condition.
Synchronising breakers and neutral switches shall be electrically
operated having remote switching facility.
Double frequency meter and double voltmeter shall be provided in
synchronising panel. Synchrocheck relay shall be provided in the
panel.
Switch ratings, cable sizes, earthing conductor sizes shall be
designed considering fault current contribution by all generators
running in parallel.
Buses shall be designed for maximum current at parallel running.
19.Protection of generators in Power stations ( Hydel Thermal and
Nuclear )
Faults within the generator
Generator differential ( 87 G)
Interturn fault ( 87GI )
Stator earth fault ( 64G )
Rotor earth fault ( 64 F )
Loss of excitation ( 40 G)

72. Faults when interfaced with the grid
Over voltage ( 59 G )
Stator over current / overload ( 50 G )
Rotor over current / over voltage
Over fluxing ( 99 G )
Negative phase sequence ( 46 G )
Pole slipping ( 78 G )
Distance / back up impedance protection ( 21 G )
Under frequency (81 G )
Reverse Power / Low forward Power ( 32 G )
Dead machine protection ( 61 G )
Protection against transformer faults in unit type configuration:
Overall generator-transformer (GT) and Unit aux transformers ( UAT )
differential protection
Generator transformer
Differential protection ( 87T)
REF protection ( 64 GT)
Back up over current on HV side (51 GT)
HV neutral over current ( 51 NGT)
Unit auxiliary transformers
Back up instantaneous
and time delayed over current
protection ( 50/51 UAT )
Differential protection

73. 20. DG sets with AMF panels
AMF panel shall be physically segregated from the generator
control panel.
Incoming isolation shall be provided in the AMF panel both for the
Grid and generator supply.
Only 4 pole contactors shall be used in 3 phase AMF panels.
Time delay of minimum 3 seconds may be provided for change
over of supply in both directions.
Control wiring diagram shall be affixed inside the AMF panel.
Standard colour codes and numbered ferrules shall be used for
wiring the AMF panel.

74. SALIENT FEATURES
1. Delicensing of generation.
2. Setting up of transmission utility at the centre.
3. Provision for private transmission licensees.
4. Open access in transmission.
5. Distribution licensees would be free.
6. SERC may permit open access in distribution.
7. For rural and remote areas stand alone systems for generation and
distribution would be permitted.
8. For rural areas decentralised management of distribution through
Panchayats, User Associations, Cooperatives or Franchisees would be
permitted.
9. Trading as a distinct activity is being recognised.

75. SALIENT PROVISIONS OF ELECTRICITY ACT 2003
Section 14 : Grant of licence.
Section 38 : Central Transmission Utility and functions.
Section 39 : State Transmission Utility and functions.
Section 50 : The Electricity Supply Code.
Section 54 : control of transmission and use of electricity.
Section 55 : Use of meters.
Section 56 : Disconnection of supply in default of payment.
Section 126 : Assessment.
Section 135 : Theft of electricity.
Section 158 : Arbitration.
Section 161 : Notice of accidents and inquires.
Section 162 : Appointment of Chief Electrical Inspector and Electrical
Inspector.