*ELECTRICAL CODE*



NATIONAL ELECTRICAL CODE (2011)

PART 1: NATIONAL ELECTRICAL CODE

SECTION 1 SCOPE OF THE NATIONAL ELECTRICAL CODE

This Part 1/Section 1 of the Code describes the scope of the National Electrical Code.

2 REFERENCES

The National Electrical Code takes into account the stipulations in several Indian Standards dealing with the various aspects relating to electrical installation practice. Several product standards also exist, and compliance with relevant Indian Standards is desirable. It is therefore recommended that individual Parts/Sections of the Code should be read in conjunction with the relevant Indian Standards. List of such Indian Standards is given at relevant Part/ Section of the Code.

At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards.

SECTION 2 DEFINITIONS

LIST OF INDIAN STANDARDS ON ELECTROTECHNICAL VOCABULARY

IS No.

Title

1885

Electrotechnical vocabulary:

(Part 1) : 1961

Fundamental definitions

(Part 8) : 1986

Secondary cells and batteries (first revision)

(Part 9) : 1992

Electrical relays (second revision)

IEC 60050 (446) : 1983

1983 (Part 10) : 1993

Power system protection (first revision)

1986 (Part 11) : 1966

Electrical measurements

(Part 14) : 1967

Nuclear power plants

(Part 15) : 2003

(Part 15) : 2003/ Primary cells and batteries (first revision)

1996 (Part 16/Sec 1) : 1968

Lighting, Section 1 General aspects

(Part 16/Sec 2) : 1968

Lighting, Section 2 General

illumination, lighting fittings and lighting for traffic and signalling

(Part 16/Sec 3) : 1967

Lighting, Section 3 Lamps and

(Part 17) : 1979

Switchgear and controlgear (first revision)

(Part 27) : 1993/

Power electronics (second revision)

1982 (Part 28) : 1993

Instrument transformers (first revision)

1986 (Part 29) : 1971

Mining terms

(Part 30) : 1971

Overhead transmission and distribution of electrical energy

(Part 32) : 1993/

Electric cables (first revision)

IEC 60050 (461) :

1984 (Part 34) : 1972

Cinematography

(Part 35) : 1993

Rotating machinery (first revision)

IEC 60050 (411)

1996 (Part 37) : 1993/

IEC 60050 (691) 1973

Part 37 Tariffs for electricity (first revision)

(Part 38) : 1993/ IEC 60050 (421) :

1990

Power transformers and reacto (second revision)

(Part 43) : 1977

Electrical equipment used in medical

(Part 51) : 1993/

IEC 60050 (841) : 1983

Industrial electro-heating

(Part 53) : 1980

Mica

(Part 54) : 1993/

IEC 60050 (471) : 1984

Insulators (first revision)

(Part 55) : 1981

Electric fans

(Part 57) : 1993/

IEC 60050 (131) 1978

Electric and magnetic circuits (first : revision)

(Part 60) : 1993/

Electrical apparatus for explosive

IEC 60050 (426) : 1990

atmospheres (first revision)

(Part 61) : 1985

Nuclear medical instruments

(Part 62) : 1993/

IEC 60050 (212) : 1990

Solid insulating materials (first revision)

(Part 69) : 1993/

IEC 60050 (602) : 1993

tribution of electricity — Generation

(Part 70) : 1993/

IEC 60050 (604) 1987

Generation, transmission and distribution of electricity —Operation

(Part 71) : 1993/

IEC 60050 (605) 1983

Generation, transmission and distribution of electricity Substations

(Part 72) : 1993/

IEC 60050 (101) : 1977

Mathematics

(Part 73/Sec 1) : 993/

IEC60050 (111-1) : 1984

Physics and chemistry, Section 1 physical concepts

(Part 73/Sec 2) : 1993/

IEC 60050 2 (111-2) : 1984

Physics and chemistry — Section 2 Electrotechnical concepts

(Part 73/Sec 3) : 1993/

IEC 60050 : (111-3) : 1977

Physics and chemistry — Section 3 Concepts related to quantities and unit

(Part 74) : 1993/

IEC 60050 (151) 1975

Electrical and magnetic devices

(Part 75) : 1993/

IEC 60050 (351) : 1975

Automatic control

(Part 77) : 1993/

IEC 60050 (466) : 1990

Overhead lines

(Part 78) : 1993/

IEC 60050 (601) : 1985

Generation, transmission and distribution of electricity —General

(Part 79) : 1993/

IEC 60050 (603) : 1986

Generation, transmission and transmission and distribution of electricity — Power system planning and management

(Part 80) : 1994/

IEC 60050 (301) 1983

General terms on measurements : in electricity

(Part 81) : 1993/

IEC 60050 (302) : 1983

Electrical measuring instruments

SECTION 3 GRAPHICAL SYMBOLS FOR DIAGRAMS, LETTER SYMBOLS AND SIGNS

LIST OF INDIAN STANDARDS ON GRAPHICAL SYMBOLS

IS No.

Title

2032

Graphical symbols used in electrotechnology:

(Part 15) : 1976

Aircraft electrical symbols

(Part 19) : 1977

Electrical equipment used in medical practice

(Part 25) : 1980

Electrical installations in ships

3722

Letter symbols and signs used in electrical technology

(Part 1) : 1983

General guidelines on symbols and subscripts

(Part 2) : 1983

Reference tables for symbols and subscripts

10381 : 1982

Terms (and their Hindi equivalents) commonly used for name plates and similar data of electrical power equipment

11353 : 1985

Guide for uniform system of marking and identification of conductors and apparatus terminals

12032 (Part 1): 1987/

IEC 60617-1 (1985)

Graphical symbols for diagrams in the field of electrotechnology: Part 1 General information, general index, cross reference table

12032 (Part 2): 1987/

IEC 60617-2 (1983

Graphical symbols for diagrams in the field of electrotechnology: Part 2 Symbols elements, qualifying symbols and other symbols having general Application

12032 (Part 3) :

Graphical symbols for diagrams in the field of electrotechnology:

Part 3 Conductors and connecting devices

12032 (Part 4) : 1987/

IEC 60617-4 (1984)

Graphical symbols for diagrams in the field of electrotechnology: Part 4 Passive components

12032 (Part 6) : 1987/

IEC 60617-6 (1983)

Graphical symbols for diagrams in the field of electrotechnology: Part 6 Production and conversion of electrical energy

12032 (Part 7) : 1987/

IEC 60617-7 (1983)

Graphical symbols for diagrams in the field of electrotechnology: Part 7 Switchgear, controlgear and protective

12032 (Part 8) : 1987/

IEC Part 8 60617-8 (1983)

Graphical symbols for diagrams in the field of electrotechnology: Measuring instruments, lamps and signalling devices

12032 (Part 11) : 1987/

IEC 60617-11 (1983)

Graphical symbols for diagrams in the field of electrotechnology: Part 11 Architectural and topographical installation plans and diagrams

SECTION 4 GUIDE FOR PREPARATION OF DIAGRAMS, CHARTS, TABLES AND MARKING

LIST OF INDIAN STANDARDS ON DIAGRAMS, CHARTS, TABLES AND MARKING

IS No.

Title

1064 : 1980

Specification for paper standard sizes

2032

Graphical symbols used in electrotechnology:

(Part 15) : 1976

Aircraft electrical symbols

(Part 19) : 1977

Electrical equipment used in medical practice

(Part 25) : 1980

Electrical installations in ships

5578 : 1984

Guide for marking of insulated conductors

8270

Guide for the preparation of diagrams, charts and tables for electrotechnology:

(Part 1) : 1976

Definitions and classification

(Part 2) : 1976

Item designation

(Part 3) : 1977

General requirements for diagrams

(Part 4) : 1977

Circuit diagram

(Part 5) : 1976

Interconnection diagrams and tables

(Part 6) : 1983

Unit wiring diagrams and tables

SECTION 5 UNITS AND SYSTEMS OF MEASUREMENT

The following Indian Standard may be referred for further information:

IS 10005 : 1994/ISO 1000 : 1992 SI units and recommendations for the use of their multiples and of certain other units’.

SECTION 6 STANDARD VALUES

IS No.     Title
1076 (Part 1) : 1985 Preferred numbers: Part 1 Series of preferred numbers
ISO 3 : 1973 Voltage bands for electrical installations including preferred
12360 : 1988 voltages and frequency

SECTION 7 FUNDAMENTAL PRINCIPLES

Reference has been made to the following Indian Standard:

IS No Title
IS 3792 : 1978 Guide for heat insulation of non-industrial buildings

SECTION 8 ASSESSMENT OF GENERAL CHARACTERISTICS OF BUILDINGS

This Part 1/Section 8 of the Code covers guidelines for assessing the characteristics of buildings and the electrical installation therein.

SECTION 9 WIRING INSTALLATIONS

LIST OF INDIAN STANDARDS RELATED TO INSTALLATION.

IS No.

Title

371 : 1999

Ceiling roses — Specification

732 : 1989

Code of practice for electrical wiring installations

1255 : 1983

Code of practice for installation and maintenance of power cables upto and including 33 kV rating

1293 : 2005

Plugs and socket-outlets of rated voltages up to and including 250 V and rated current up to and including 16 A — Specification

1646 : 1997

Code of practice for fire safety of buildings (general): Electrical Installations

2412 : 1975

Link clips for electrical wiring

2667 : 1988

Fittings for rigid steel conduits for electrical wiring

3043 : 1987

Code of practice for earthing

3419 : 1988

Fittings for rigid non-metallic conduits

3480 : 1966

Flexible steel conduits for electrical wiring

3808 : 1979

Method of test for non-combustibility of building materials

3837 : 1976

Accessories for rigid steel conduits for electrical wiring

3854 : 1997

Switches for domestic and similar purposes

3961

Recommended current ratings for cables:

(Part 1) : 1967

Paper insulated lead sheathed cables

(Part 2) : 1967

PVC insulated and PVC sheathed heavy duty cables

(Part 3) : 1968

Rubber insulated cables

(Part 5) : 1968

PVC insulated light duty cables

4289

Specification for flexible cables for lifts and other flexible connections

(Part 1) : 1984

Elastomer insulated cables

(Part 2) : 2000

PVC insulated circular cables

4649 : 1968

Adaptors for flexible steel conduits

5571 : 2000

Guide for selection of electrical equipment for hazardous areas

5572 : 1994

Classification of hazardous areas (other than mines) having flammable gases and vapours for electrical installation

6946 : 1990

PVC insulated cables for working voltages upto and including 1100 V

8130 : 1984

Conductors for insulated electric cables and flexible cords

8623

Specification for low-voltage switchgear and controlgear assemblies:

(Part 1) : 1993/

IEC 60439-1 : 1985

Requirements for type-tested and partially type-tested assemblies

(Part 2): 1993/ EC 60439-2 : 1987

Particular requirements for busbar trunking systems (busway)

(Part 3) :1993/ IEC 60439-3 1990

Particular requirements for : equipment where unskilled persons have access for their use

9537

Conduits for electrical installations

(Part 2) : 1981

Rigid steel conduits

(Part 3) : 1983

Rigid plain conduits of insulating materials

(Part 4) : 1983

Pliable self-recovering conduits of insulating materials

(Part 5) : 2000

Pliable conduits of insulating material

(Part 6) : 2000

Pliable conduits of metal or composite materials

(Part 8) : 2003

Rigid non-threadable conduits of aluminium alloy

11000 (Part2/ Sec1) : 1984 /

IEC 695-2-1 : 1980

Fire hazard testing: Part 2 Test methods, Section 1 Glow-wire test and guidance

11353 : 1985

Guide for uniform system of marking and identification of conductors and apparatus terminals

13703 (Part 1) :

1993 /IEC 269- 1 : 1986

LV Fuses for voltages not exceeding 1000 V ac or 1500 V dc: Part 1

14255 : 1995

Aerial bunched cables for working voltages upto and including 1 100 V — Specification

14763 : 2000

Conduits for electrical purposes — Outside diameters of conduits for

electrical installation and threads for conduits and fittings — Specification

14768 (Part 1) : 2000

Conduit fittings for electrical installations — Specification: Part 1 General requirements

14772 : 2000

General requirements for enclosures of accessories for household and similar fixed electrical installations — Specifications for an accessory or luminaries

14927

Cable trunking and ducting systems for electrical installations:

(Part 1) : 2001

General requirements

(Part 2) : 2001

Cable trunking and ducting systems intended for mounting on walls or Ceilings

14930

Conduit systems for electrical installations:

(Part 1) : 2001

General requirements

(Part 2) : 2001

Particular requirements — Conduit systems buried underground

SP 69 : 2000

Banking and related financial services — Information security guidelines

SECTION 10 SHORT-CIRCUIT CALCULATIONS

 Indian Standards for Short Circuit Calculations

IS No

Title

2086 : 1993

Carriers and bases used in rewirable type electric fuses for voltages upto 650V

9926 : 1981

Fuse wires used in rewirable type electric fuses upto 650 V

13703 (Part 2/ Sec 1) : 1993/

IEC 60269-2 : 1986

Specification for low-voltage fuses for voltages not exceeding 1 000 V ac or 1 500 V dc : Part 2 Fuses for use by authorized persons, Section 1 Supplementary requirements

13703 (Part 2/ Sec 2) : 1993/

IEC: 60269-2 : 1987

LV fuses for voltages not exceeding 1000 V ac or 1500 V dc Part 2 Fuses for use by authorized persons, Section 2 Examples of standardized fuses

IS/IEC 60898-1 : 2002

Electrical accessories—Circuit breakers for over protection for

household and similar installations: Part 1 Circuit breakers for ac operation

SECTION 11 ELECTRICAL ASPECTS OF BUILDING SERVICES

LIST OF INDIAN STANDARDS RELATED TO BUILDING SERVICES

IS No

Title

1881 : 1998

Code of practice for indoor installation of public address systems

1882 : 1993

Code of practice for outdoor installation of public address system

2175 : 1988

Specification for heat sensitive fire detectors for use in automatic fire alarm system

2440 : 1975

Guide for daylighting of buildings

3103 : 1975

Code of practice for industrial ventilation

3043 : 1987

Code of practice for earthing

3362 : 1977

Code of practice for natural ventilation of residential buildings

3646 (Part 1): 1992

Code of practice for interior illumination: Part 1 General

requirements and recommendations for welding interiors

7662 (Part 1): 1974

Recommendations for orientation of buildings: Part 1 Non-industrial buildings

8884 : 1978

Code of practice for the installation of electric bells and call system

8969 : 1978

Code of practice for installation and maintenance of impulse and electronic master and slave electric clock systems

14665 (Part 2/ Sec 1) : 2000

Electric traction lifts: Part 2 Code of practice for installation, operation and maintenance, Section 1 Passenger and goods lifts

14665 (Part 2/ Sec 2) : 2000

Electric traction lifts: Part 2 Code of practice for installation, operation and maintenance, Section 2 Service lifts

14665 (Part 3/ Sec 1) : 2000

Electric traction lifts: Part 3 Safety rules, Section 1 Passenger and goods lifts

14665 (Part 3/ Sec 2) : 2000

Electric traction lifts: Part 3 Safety rules, Section 2 Service lifts

SP 7 : 2005

National Building Code of India

SP 72 : 2010

National Lighting Code

SECTION 12 SELECTION OF EQUIPMENT

This Part 1/Section 12 of the Code covers general criteria for selection of equipment.

NOTE — This Part 1/Section 12 shall be read in conjunction with the Indian Standard/Codes on individual equipment.

SECTION 13 ERECTION AND PRE-COMISSIONING TESTING OF INSTALLATION

LIST OF INDIAN STANDARDS ON INSTALLATION

IS No

Title

732 : 1989

Code of practice for electrical wiring installations

1255 : 1983

Code of practice for installation and maintenance of power cables upto and including 33 kV rating

1646 : 1997

Code of practice for fire safety of buildings (general): Electrical Installations

3043 : 1987

Code of practice for earthing

4051 : 1967

Code of practice for installation and maintenance of electrical equipment in mines

5571 : 2000

Guide for selection of electrical equipment for hazardous areas

8623 (Part 1) : 1993/ IEC 60439-1 : 1985

Specification for low-voltage switchgear and controlgear assemblies: Part 1 Requirements for type-tested and partially type-tested assemblies

10028 (Part 2) : 1981

Code of practice for selection, installation and maintenance of transformers:

Part 2 Installation

14927 (Part 1) : 2001

Cable trunking and ducting systems for electrical installations :

General requirements Cable trunking and ducting

(Part 2) : 2001

Cable trunking and ducting systems intended for mounting on walls or ceilings

14930

Conduit systems for electrical installations:

(Part 1) : 2001

General requirements

(Part 2) : 2001

Particular requirements — Conduit systems buried underground

15707 : 2006

Testing, evaluation, installation and maintenance of ac electricity meters — Code of practice

EARTHING
This Part 1/Section 14 of the Code covers general requirements associated with earthing in electrical installations. Specific requirements for earthing in individual installations are covered in respective Parts of the Code.SECTION 14

NOTES

1 This Section shall be read in conjunction with the provisions of IS 3043.

2 Additional rules applying to earth leakage circuit-breaker systems are covered in Annex A.

For further details, the following standards may be referred

IS No

Title

732 : 1989

Code of practice for electrical wiring installations (third revision)

3043 : 1987

3043 : 1987 Code of practice for earthing (first revision)

IS 8437(Part 1) : 1993

Guide on effects of current passing through human body: Part 1 General aspects

IS 8437(Part 2) : 1993

Guide on effects of current passing through human body: Part 2 Special aspects

IS/IEC 60947-2 : 2006

Low voltage switchgear and controlgear: Part 2 Circuit breakers

IS/IEC 60947-4-1: 2002

Low-voltage switchgear and controlgear: Part 4 Contactors and motor-starters, Section 1 Electromechanical contactors and motorstarters

SECTION 15 LIGHTNING PROTECTION

The following Indian Standards on lightning protection may be referred for further details:

IS No Title
IS 2309 : 1989 Code of practice for the protection of buildings and allied structures
against lightning (second revision)
IS 15086 : Part 5/ Surge arresters : Part 5 Selection
IEC 60099-5 : 199 and application recommendations

SECTION 16 PROTECTION AGAINST VOLTAGE SURGES

LIST OF INDIAN STANDARDS RELEVENT TO PROTECTION AGAINST VOLTAGE SURGES

IS No

Title

732 : 1989

Code of practice for electrical wiring installations

2309 : 1989

Code of practice for the protection of buildings and allied structures against lightning

11548 : 1986

Capacitors for surge protection for use in voltage system above 650 V and up to 33 kV

15086 (Part 1) : 2001

Surge arresters: Part 1 Non-linear resistor type gapped surge arresters for ac systems

15086 (Part 3) : 2003/

IEC 60099-3 : 1990

Surge arresters: Part 3 Artificial pollution testing of surge arresters

15086 (Part 5) 2001/

IEC 60099-5 : 1996

: Surge arresters: Part 5 Selection and application recommendations

QC 420100 : 1994 /IEC QC

420100 : 1991

Varistors for use in electronic equipment — Sectional specification for surge suppression varistors

QC 420101 : 1994 /IEC QC

Varistors for use in electronic equipment

420101 : 1991

specification for silicon carbide surge suppression varistors assessment level E

QC 420102 : 1993 /IEC QC

420102 : 1991

Varistors for use in electronic equipment — Blank detail specification for zinc oxide surge suppression varistors — Assessment level E

SECTION 17 GUIDELINES FOR POWER-FACTOR IMPROVEMENT

1 SCOPE

This Part 1/Section 17 of the Code covers causes for low power factor and guidelines for use of capacitors

to improve the same in consumer installations.

1.2 Specific guidelines, if any, for individual installation on improvement of power factor are covered in the respective sections of the Code.

2 REFERENCE

The following Indian Standard on power factor improvement may be referred for details:

IS 7752 (Part 1) : 1975 Guide for the improvement of power factor in consumer installations: Part 1 Low and medium supply voltages.

SECTION 18 ENERGY EFFICIENCY ASPECTS

1 SCOPE

This Part 1/Section 18 of the Code covers the aspects to be considered for selection of equipment from energy conservation point of view and guidance on energy audit.

2 REFERENCE

The following Indian Standard has been referred to in this Section: 

IS 12615 : 2004 Energy efficient induction motors — Three phase squirrel cage

SECTION 19 SAFETY IN ELECTRICAL WORK

1 SCOPE

This Part 1/Section 19 of the Code covers guidelines on safety procedures and practices in electrical work.

2 REFERENCES

A list of Indian Standards on safety in electrical work are as follows:

IS No Title
2551 : 1982 Specification for danger notice plates
IS 5216 (Part 1) : 1982 Recommendations on safety procedures and practices in electrical work:
Part 1 General
IS 5216 (Part 2) : 1982 Recommendations on safety procedures and practices in electrical work:
Part 2 Life saving techniques
8923 : 1978 Warning symbol for dangerous voltages
SP 31 : 1986 Method of treatment of electric shock

SECTION 20

1 SCOPE

This Part 1/Section 20 gives frequently referrred tables in electrical engineering work.

2 REFERENCES

The following Indian Standards may be referred for further details:

IS No. Title
3961 Recommended current ratings for cables:
(Part 1) : 1967 Paper insulated lead sheathed cables
(Part 2) : 1967 PVC insulated and PVC sheathed heavy duty cables
(Part 3) : 1968 Rubber insulated cables
(Part 4) : 1968 Polyethylene insulated cables
IS 11955 : 1987 Preferred current ratings

PART 3: NATIONAL ELECTRICAL CODE

SECTION 1 DOMESTIC DWELLINGS

1 SCOPE

This Part 3/Section 1 of the Code covers requirements for electrical installations in domestic dwellings.

2 REFERENCES

This Part 3/Section 1 of the Code should be read in conjunction with the following Indian Standards:

IS No. Title
3646 (Part 2) : 1966 Code of practice for interior illumination: Part 2 Schedule for values of illumination and glare index
7689 : 1989 Guide for the control of undesirable static electricity
8061 : 1976 Code of practice for design, installation and maintenance of service lines up to and including 650 V

SECTION 2 OFFICE BUILDINGS, SHOPPING AND COMMERCIAL CENTRES

AND INSTITUTIONS

1 SCOPE

This Part 3/Section 2 of this Code covers requirements for electrical installations in office buildings, shopping and commercial centres and educational and similar institutional buildings.

2 REFERENCES

This Part 3/Section 2 of the Code should be read in conjunction with the following Indian Standards:

IS No. Title
3646 (Part 2) : 1966 Code of practice for interior illumination: Part 2 Schedule for values of illumination and glare index
8061 : 1976 Code of practice for design, installation and maintenance of service lines up to and including 650 V
15707 : 2006 Testing, evaluation, installation and maintenance of ac electricity  meters — Code of practice

SECTION 3 RECREATIONAL, ASSEMBLY BUILDING

1 SCOPE

1.1 This Part 3/Section 3 of the Code covers requirements for electrical installation in buildings, such as those meant for recreational and assembly purposes.

1.2 This Part 3/Section 3 does not cover sports buildings.

2 REFERENCES

This Part 3/Section 1 of the Code should be read in conjunction with the following Indian Standards:

IS No Title
8061 : 1976 Code of practice for design, installation and maintenance of service lines up to and including 650 V
SP 72 : 2010   National Lighting Code

SECTION 4 MEDICAL ESTABLISHMENTS

1 SCOPE

This Part 3/Section 4 of this Code applies to the electrical installations in medical establishments. This Section is also applicable to rooms for veterinary medicine and dental practice.

2 REFERENCES

This Part 3/Section 4 of the code should be read in conjunction with the following Indian Standards:

IS No Title
3646 (Part 2) : 1966 Code of practice for interior 1966 illumination : Part 2 Schedule for values of illumination and glare index
7689 : 1989 Guide for the control of undesirable static electricity 8061 : 1976 Code of practice for design, installation and maintenance of service lines up to and including 650 V  13450 (Part 1) : Medical electrical equipment : 1994 /IEC Part 1  General requirements for
60601-1 : 1988 safety
14665 (Part 1) : Electric traction lifts : Part 1 2000 Guidelines for outline dimensions of passenger, goods, service and hospital lifts
SP 7 : 2005 National Building Code of India
SP 72 : 2010 National Lighting Code

SECTION 5 HOTELS

1 SCOPE

This Section 5 of the Code covers requirements for electrical installations in buildings such as hotels and lodging houses.

2 REFERENCES

This Part 3/Section 5 of the Code should be read in conjunction with the following Indian Standards:

IS No. Title
3646 (Part 2) : 1966 Code of practice for interior illumination: Part 2 Schedule for values of illumination and glare index
8061 : 1976 Code of practice for design, installation and maintenance of service lines up to and including 650 V
IS/IEC 60309-1 : Plugs, socket-outlets and couplers 2002 for industrial purposes: Part 1 General requirements (first revision)
IS/IEC 60309-2 : Plugs, socket-outlets and couplers 2002 for industrial purposes: Part 2 Dimensional interchangeability requirements for pin and contact tube accessories (first revision)
SP 7 : 2005 National Building Code of India
SP 72 : 2010 National Lighting Code

SECTION 6 SPORTS BUILDINGS

1 SCOPE

This Part 3/Section 6 of the Code covers requirements for electrical installations in sports buildings and stadia, indoor and outdoor.

SECTION 7 SPECIFIC REQUIREMENTS FOR ELECTRICAL INSTALLATIONS IN MULTISTORIED BUILDINGS

1 SCOPE

1.1 This Part 3/ Section 7 is intended to cover specific requirements for electrical installations in multistoried buildings.

1.2 The requirements specified here are in addition to those specified in respective sections of the Code, and are specifically applicable for buildings more than 15 m in height.

2 REFERENCES

This Part 3/Section 7 of the Code should be read in conjunction with the following Indian Standards:

IS No. Title
SP 7 : 2005 National Building Code of India
2309 : 1989 Code of practice for the protection of buildings and allied structures against lightning
10028 (Part 2) : Code of practice for selection, 1981 installation and maintenance of transformers: Part 2 Installation

PART 4: ELECTRICAL INSTALLATIONS IN INDUSTRIAL BUILDINGS

1 SCOPE

1.1 This Part 4 of the Code covers the guidelines for design and construction of electrical installations in industrial buildings.

1.2 This Part 4 does not cover specific areas in industrial sites, such as office buildings, workers rest rooms, medical facilities, canteen annex e, etc, for which requirements stipulated in the relevant sections of Part 3 of the Code apply.

1.3 This Part 4 also does not cover locations in industrial sites that are by nature hazardous for which the provisions of Part 7 of the Code apply.

2 REFERENCES

This Part 4 should be read in conjunction with the Indian Standards listed at Annex A.

ANNEX A (Clause 2)

IS No.

Title

732 : 1989

Code of practice for electrical wiring installations

1646 : 1997

Code of practice for fire safety of buildings (general): Electrical

installations

2726 : 1988

Code of practice for fire safety of industrial buildings: Cotton ginning and pressing (including cotton seed delintering) factories

3058 : 1990

Code of practice for fire safety of industrial buildings: Viscose rayon yarn and/or staple fibre plants

3079 : 1990

Code of practice for fire safety of industrial buildings: Cotton textile Mills

3594 : 1991

Code of practice for fire safety of industrial buildings: General storage and warehousing including cold storage

3595 : 2002

Code of practice for fire safety of industrial buildings : Coal pulverizers and associated equipments

3836 : 2000

Fire safety of industrial buildings — Jute mills — Code of practice

4226 : 1988

Code of practice for fire safety of industrial building: Aluminium/ Magnesium powder factories

4886 : 1991

Code of practice for fire safety of industrial buildings: Tea factories

6329 : 2000

Code of practice for fire safety of industrial buildings — Saw mills and wood works

6665 : 1972

Code of practice for industrial lighting

7689 : 1989

Guide for the control of undesirable static electricity

9109 : 2000

Fire safety of industrial buildings — Pradio frequency paint and varnish factories — Code of practice

9080 (Part 2/ Sec 2) : 1980

Safety requirements in electro- heat installations: Part 2 Particular requirements for resistance heating equipment, Section 2 Protection in indirect resistance heating installations

9080 (Part 2/ Sec 4) : 1981

Safety requirements in electro- heat installations: Part 2 Particular requirements for resistance heating equipment, Section 4 Protection in installations used for drying varnishes and other similar products

IS/IEC 60519-1 : 1984

Safety in electroheat installation: Part 1 General requirements

IS/IEC 60519-3 :1988

Safety in electroheat installations Part 3 Particular requirements for induction and conduction heating and induction melting installations

IS/IEC 60519-5 :1980

Safety in electroheat installation Part 5 Specification for safety in plasma installation

IS/IEC 60519-9 : 1987

Safety in electroheat installations: Part 9 Particular requirements for high-frequency dielectric heating installations

IS/IEC 60947-1 : 2004

Specification for low-voltage switchgear and controlgear: Part 1 General rules

SP 7 : 2005

National Building Code of India

SP 72 : 2010

National Lighting Code

PART 5: NATIONAL ELECTRICAL CODE

SECTION 1 PUBLIC LIGHTING INSTALLATIONS

1 SCOPE

1.1 This Part 5/Section 1of the Code covers requirements of public lighting installations in order to provide guidance to those concerned with the preparation of public lighting schemes, their installation and maintenance (see also SP 72).

1.2 This Section deals only with electric lighting sources and does not include gas or other types of lighting.

1.3 This Section also does not cover exterior lighting installations, such as those which apply for parks, shopping enclaves, flood lighting of routes and structures of architectural importance, etc.

2 REFERENCES

This Part 5/Section 1 of the Code should be read in conjunction with the following Indian Standards:

IS No Title
SP 72 : 2010 National Lighting Code
1885 (Part 16/Sec 2) : 1968 16 Electrotechnical vocabulary : Part Lighting, Section 2 General illumination lighting fittings and lighting for traffic and signalling
1944 (Parts 1 and 2) : 1970 Code of practice for lighting of public thoroughfares: Part 1 General principles; Part 2 Lighting of main roads (first revision)

SECTION 2 TEMPORARY OUTDOOR INSTALLATIONS

1 SCOPE

This Part 5/Section 2 of the Code covers the requirements for outdoor electrical installations of temporary use.

2 REFERENCES

This Part 5/Section 2 of the code should be read in conjunction with the following Indian Standards:

IS No.      Title
5613 (Part 1/ Sec1)1985 Code of practice for design,installation and maintenance of overhead power lines: Part 1 Lines up to and including 11 kV, Section 1 Design 5613 (Part 1/ Sec 2)1985 Code of practice for design, installation and maintenance of overhead power lines: Part 1 Lines up to and including 11 kV, Section 2 Installation and maintenance
SP 7 : 2005 National Building Code of India

SECTION 3 PERMANENT OUTDOOR INSTALLATIONS

1 SCOPE

1.1 This Part 5/Section 3 of this Code covers requirements for permanent outdoor installations, for operations of equipment and machinery therein used for the purposes such as:

a) Winning, stacking and primary processing;

b) Secondary processing;

c) Transport conveying;

d) Associated pumping and water supply systems;

e) Haulage trucks;

f) Power generating and distribution systems;

g) Control, signal supervisory and communication system; and

h) Ancillaries.

1.2 This Section does not cover temporary and provisional places of work of durations less than 6 months for which reference shall be made to Part 5/ Section 2 of this Code.

NOTE — However this Section shall be applicable to building sites and earth-moving sites as far as the equipment used therein are similar to those used in surface mining application.

2 REFERENCES

This Part 5/Section 3 of this Code should be read in conjunction with the following Indian Standards:

IS No.      Title

1255 : 1983

Code of practice for installation and maintenance of paper insulated power cables (up to and including 33 kV)
10028 (Part 2) : 1981 Code of practice for selection, installation and maintenance of transformers : Part 2 Installation
IS/IEC 60947(Part 1) Specification for low voltage chgear and controlgear: Part 1 General rules

PART 6: ELECTRICAL INSTALLATIONS IN AGRICULTURAL PREMISES

1 SCOPE

1.1 This Part 6 of the Code covers requirements for the fixed electrical installations in agricultural premises

excluding dwellings or similar locations situated in these premises.

1.2 This Part applies to premises where livestock are present.

NOTE — Examples of such premises are stables, cow houses, sheepfolds, stalls, hen-houses, piggeries, etc.

PART 7: ELECTRICAL INSTALLATIONS IN HAZARDOUS AREAS

1 SCOPE

1.1 This Part 7 of the Code covers recommendations for electrical installations in chemical industries, petroleum refineries and other similar areas where hazards of explosion due to gases and vapours exist, and in which flammable gases and volatile liquids are processed, stored, loaded, unloaded or otherwise handled.

1.2 In addition to the recommendations given in this Part 7, the electrical installations in hazardous areas shall comply, with the requirements for industrial installation in non-hazardous areas laid down in Part 4 of this Code.

1.3 This Part does not apply to installations in hazardous areas having ignitable dusts and fibres. As distinct from the hazardous areas on the surface, environmental conditions in mines demand special consideration. This Part of the Code does not include provisions for installations in underground mines.

1.4 In any plant installation, irrespective of size, there may be numerous sources of ignition apart from those associated with electrical apparatus. Precautions may be necessary to ensure safety but guidance on this aspect is outside the scope of this Part.

NOTE — Some examples of industrial locations which require application of the guidelines in this Part are given in Annex A.

2 REFERENCES

A list of standards for electrical equipment for explosive atmospheres is given at Annex B. Some of these standards deal with particular construction techniques, others with aspects of standardization which are relevant to more than one technique.

ANNEX B (Clause 2)

INDIAN STANDARDS FOR ELECTRICAL EQUIPMENT FOR USE IN EXPLOSIVE ATMOSPHERES

IS No

Title

1554 (Part 1) : 1988

PVC insulated (heavy duty) electric cables: Part 1 For working voltages up to and including 1 100 V

1646 : 1997

Code of practice for fire safety of buildings (general): Electrical Installations

2309 : 1989

Code of practice for the protection of buildings and allied structures against lightning

5571 : 2009

Guide for selection and installation of electrical equipment for hazardous areas

5572 : 2009

Classification of hazardous areas (other than mines) having flammable gases and vapours for electrical installation

7689 : 1989

Guide for the control of undesirable static electricity

7724 : 2004/ IEC 60079-5

Electrical apparatus for explosive gas atmoshperes — Powder filling “q”

7820 : 2004/ IEC 60079-4

Electrical apparatus for explosive gas atmospheres — Method of test for ignition temperature

9570 : 1980/ IEC 60079-12 : 1978

Classification of flammable gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents

9735 : 2003/ IEC 60079-1-1 : 2002

Electrical apparatus for explosive gas atmospheres — Flameproof enclosures “d” — Method of test for ascertainment of maximum experimental safe gap

IS/IEC 60079-0 : 2004

Explosive atmospheres: Part 0 General requirements

IS/IEC 60079-1 : 2007

Explosive atmospheres: Part 1 Equipment protection by flameproof enclosures “d”

IS/IEC 60079-2 2007

: Explosive atmoshperes: Part 2 Equipment protection by pressurized enclosures “p”

IS/IEC 60079-6 : 2007

Explosive atmospheres : Part 6 Equipment protection by oilimmersed “o”

IS/IEC 60079-7 : 2006

Explosive atmoshpheres : Part 7 Equipment protection by increased safety ‘e’

IS/IEC 60079-11: 2006

Explosive atmospheres : Part 11 Equipment protection by intrinsic safety “i”

IS/IEC 60079-15: 2005

Explosive atmospheres: Part 15 Construction, test and marking of type of protection “n” electrical apparatus

IS/IEC 60079-18 : 2004

Explosive atmospheres: Part 18 Construction, test and marking of type of protection encapsulation “m” electrical apparatus

PART 8: SOLAR PHOTOVOLTAIC (PV) POWER SUPPLY SYSTEMS

1 SCOPE

This Part 8 of the Code covers essential requirements for electrical installations for power supply system based on the solar photovoltaic energy including systems with ac modules.

2 REFERENCES

This Part 8 of the code should be read in conjunction with the following Indian Standards:

IS No. Title
2309 : 1989 Code of practice for the protection of buildings and allied structures against lightning
3034 : 1993 Fire safety of industrial buildings: Electrical generating and distribution stations — Code of practice
3043 : 1987 Code of practice for earthing
8623 (Part 1) : 1993 Specification for low voltage switchgear and controlgear assemblies: Part 1 Requirements for type-tested and partially type tested assemblies
8623 (Part 2) : 1993 Particular requirements for busbar trunking systems (bus ways)
assemblies: Part 2 Specification for low voltage switchgear and controlgear
8623 (Part 3) : 1993 Particular requirements for equipment where unskilled persons have access for their use
IS 14153 : 1994   Guide for general description of photovoltaic(PV) power generating Systems

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