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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