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*ELECTRICAL CODE* | ESAY EngInfo | Engineering Sources Around You
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.
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.
LIST OF INDIAN STANDARDS ON ELECTROTECHNICAL VOCABULARY
Electrotechnical vocabulary:
(Part 1) : 1961
(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
(Part 14) : 1967
(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
(Part 30) : 1971
(Part 32) : 1993/
Electric cables (first revision)
IEC 60050 (461) :
1984 (Part 34) : 1972
(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) :
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
(Part 54) : 1993/
IEC 60050 (471) : 1984
Insulators (first revision)
(Part 55) : 1981
(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
(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
(Part 75) : 1993/
IEC 60050 (351) : 1975
(Part 77) : 1993/
IEC 60050 (466) : 1990
(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
SECTION 3 GRAPHICAL SYMBOLS FOR DIAGRAMS, LETTER SYMBOLS AND SIGNS
LIST OF INDIAN STANDARDS ON GRAPHICAL SYMBOLS
Graphical symbols used in electrotechnology:
(Part 15) : 1976
(Part 19) : 1977
Electrical equipment used in medical practice
(Part 25) : 1980
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
1064 : 1980
Specification for paper standard sizes
5578 : 1984
Guide for marking of insulated conductors
Guide for the preparation of diagrams, charts and tables for electrotechnology:
(Part 1) : 1976
(Part 2) : 1976
(Part 3) : 1977
General requirements for diagrams
(Part 4) : 1977
(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
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.
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
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
(Part 1) : 1967
(Part 2) : 1967
(Part 3) : 1968
(Part 5) : 1968
PVC insulated light duty cables
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
8130 : 1984
Conductors for insulated electric cables and flexible cords
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
Conduits for electrical installations
(Part 2) : 1981
(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
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
Cable trunking and ducting systems for electrical installations:
(Part 1) : 2001
(Part 2) : 2001
Cable trunking and ducting systems intended for mounting on walls or Ceilings
Conduit systems for electrical installations:
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
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
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
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
3362 : 1977
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
SP 72 : 2010
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
4051 : 1967
Code of practice for installation and maintenance of electrical equipment in mines
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:
14927 (Part 1) : 2001
Cable trunking and ducting systems for electrical installations :
General requirements Cable trunking and ducting
15707 : 2006
Testing, evaluation, installation and maintenance of ac electricity meters — Code of practice
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
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
Code of practice for electrical wiring installations (third revision)
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 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
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
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.
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
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.
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
This Part 1/Section 19 of the Code covers guidelines on safety procedures and practices in electrical work.
A list of Indian Standards on safety in electrical work are as follows:
2551 : 1982 Specification for danger notice plates
IS 5216 (Part 1) : 1982 Recommendations on safety procedures and practices in electrical work:
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
This Part 1/Section 20 gives frequently referrred tables in electrical engineering work.
The following Indian Standards may be referred for further details:
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
This Part 3/Section 1 of the Code covers requirements for electrical installations in domestic dwellings.
This Part 3/Section 1 of the Code should be read in conjunction with the following Indian Standards:
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
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.
This Part 3/Section 2 of the Code should be read in conjunction with the following Indian Standards:
15707 : 2006 Testing, evaluation, installation and maintenance of ac electricity meters — Code of practice
SECTION 3 RECREATIONAL, ASSEMBLY BUILDING
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.
SP 72 : 2010 National Lighting Code
SECTION 4 MEDICAL ESTABLISHMENTS
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.
This Part 3/Section 4 of the code should be read in conjunction with the following Indian Standards:
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
SECTION 5 HOTELS
This Section 5 of the Code covers requirements for electrical installations in buildings such as hotels and lodging houses.
This Part 3/Section 5 of the Code should be read in conjunction with the following Indian Standards:
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)
SECTION 6 SPORTS BUILDINGS
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
1.1 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.
This Part 3/Section 7 of the Code should be read in conjunction with the following Indian Standards:
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
1.1 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.
This Part 4 should be read in conjunction with the Indian Standards listed at Annex A.
Code of practice for fire safety of buildings (general): Electrical
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
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
PART 5: NATIONAL ELECTRICAL CODE
SECTION 1 PUBLIC LIGHTING INSTALLATIONS
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.
This Part 5/Section 1 of the Code should be read in conjunction with the following Indian Standards:
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
This Part 5/Section 2 of the Code covers the requirements for outdoor electrical installations of temporary use.
This Part 5/Section 2 of the code should be read in conjunction with the following Indian Standards:
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
SECTION 3 PERMANENT OUTDOOR INSTALLATIONS
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.
This Part 5/Section 3 of this Code should be read in conjunction with the following Indian Standards:
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
1.1 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
1.1 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.
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
1554 (Part 1) : 1988
PVC insulated (heavy duty) electric cables: Part 1 For working voltages up to and including 1 100 V
5571 : 2009
Guide for selection and installation of electrical equipment for hazardous areas
5572 : 2009
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
Explosive atmospheres: Part 0 General requirements
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
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.
This Part 8 of the code should be read in conjunction with the following Indian Standards:
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