AN OVERVIEW
OF
NATIONAL ELECTRICAL CODE
(NEC)
Prakash Bachani,Sc. E, BIS
Focus of the presentation
 Objectives of BIS
 Process of developing Standardization culture
 Involvement of all concerned in the process of
Standardization through consensus
 Need for developing/improvement in Metering
Standards
 Areas covered in Energy Metering
 Thrust on new areas as well as enhancement of the
scope of the earlier version of Energy Meter
 Need to give wider coverage in key area of activities
Objectives
• Harmonious development of
– Standards
– Marking
– Quality Certification
• Provide new thrust to
– Standardization
– Quality Control
• To evolve a national strategy for according recognition to
standards and integrating them with
development of production and exports
growth
and
Structure for development of Standards
Standards are made with following in mind
COMMENTS
NEW
WORK
ITEM
FIRST
DRAFT
CIRCULATION
TO
COMMITTEE
MEMBERS
P-DRAFT
COMMENTS
CIRCULATION
TO
COMMITTEE
MEMBERS
COMMENTS
MEETING
WC
DRAFT
MEETING
PUBLIC
CIRCULATION
(30 to 90 Days)
F-DRAFT
STANDARD
ADOPTION -- DIVISION
COUNCIL
NATIONAL
STANDARD
Electricity Statistics in India


Total Installed Capacity – Increased
from 16,271 MW in 1971 to 249,488
MW as on 30-06-2014.
Geographical Distribution
Northern Region – 26.54%
Western Region – 36.32%
Southern Region – 23.64%
Eastern Region – 12.29%
North-Eastern Region – 1.16
Electricity Statistics in India


Total Installed Capacity – Increased
from 16,271 MW in 1971 to 249,488
MW as on 30-06-2014.
Geographical Distribution
Northern Region – 26.54%
Western Region – 36.32%
Southern Region – 23.64%
Eastern Region – 12.29%
North-Eastern Region – 1.16
Electricity Generation Sources

Thermal – 172286.09MW (69%)

Hydro – 40730.09MW (16.3%)

Nuclear – 4780.00MW (1.9%)

New and Renewable – 31692.14MW
(12.8%)
Power Stations under GSECL
Name
Type of Fuel
Capacity (MW)
Ukai Thermal Power Station
Coal
850[2]
Gandhinagar Thermal Power Station Coal
870
Wanakbori Thermal Power Station
Coal
1470
Sikka Thermal Power Station
Coal
240
Kutch Lignite Thermal Power Station Lignite
290
Dhuvaran Gas Based CCPP
Gas
219[3]
Utran Gas Based Power Station
Gas
510
Ukai Hydro Power Station
Hydro
300
Kadana Hydro Power Station
Hydro
242
Panam Canal Mini Hydro Power StationHydro
2[4]
GSECL is also serving Sardar Sarovar Narmada Nigam Limited
Hydro-electric project by O&M contract.
NATIONAL ELECTRICAL CODE 2011
 National Electrical Code is under the scope of
Electrical Installations Sectional Committee, ETD
20
 ETD 20 is one of the 37 committees under Electro
Technical Division Council of Bureau of Indian
Standards
 Members of the Committee are from CEA, CPWD,
State
Electrical
Inspectorates,
Installation
designers, engineers and contractors
 Standards and Codes are prepared through a
process of consultation, consensus and public
comment
SCOPE OF ETD 20
 To prepare standards for safety and related
matters in designing, erection and maintenance of
electrical installations from the point of view of
safety and good practice that would, amongst
other things, promote compatibility between such
standards and those concerning the equipment
installed.
 The work includes electrical installations in
buildings for different occupancies and outdoor
sites of temporary or permanent nature and also
installations in the ships
 The standards to be prepared will not cover codes
pertaining to individual equipment.
SCOPE OF
NATIONAL ELECTRICAL CODE
The National Electrical Code covers the following:
 a) Standard good practices for selection of various items of
electrical equipment forming part of power systems;
 b) Recommendations concerning safety and related matter
in the wiring of electrical installations of buildings or
industrial structures, promoting compatibility between such
recommendations and those concerning the equipment
installed.
 c) General safety procedures and practices in electrical
work; and
 d) Additional precautions to be taken for use of electrical
equipment for special environmental
explosive and active atmosphere.
conditions
like
NEC APPLIES TO:
 Standby generating plants
 Building substations
 Domestic dwellings
 Office buildings
 Shopping and commercial centres
 Institutions
 Recreation and other public premises
 Medical establishments
NEC APPLIES TO:
 Hotels
 Sports buildings
 Industrial premises
 Temporary and permanent outdoor installations
 Agricultural premises
 Installations in hazardous areas
 Solar Photovoltaic installations
NEC DOES NOT APPLY TO:
 Traction, motor vehicles, installations in rolling-
stock, on board-ships, aircraft or installations in
underground mines
 Systems of distribution of energy to public
 Power generation and transmission for such
systems
 Guidelines on the payment for electrical work
done in installations
NEC CONTENTS
 Part 1 General and Common Aspects (20 Sections)
 Part 2 Electrical installations in stand by generating stations and captive
substations
 Part 3 Electrical installations in non-industrial buildings (7 sections)
 Part 4 Electrical installations in industrial buildings
 Part 5 Outdoor installations ( 3 sections)
 Part 6 Electrical installations in agricultural premises
 Part 7 Electrical installations in Hazardous area
 Part 8 Solar Photovoltaic (PV) power supply systems
NATIONAL ELECTRICAL CODE
 Contains guidelines which can be adopted immediately
 Harmonized with corresponding IEC standards
 Code is intended to be advisory
 Code is not mandatory
 Should be adopted in interest of safety and economy
 Keep our electrical installation practices at par with the
best international practices
Alternating current
Winding- Delta
Winding- Star
Contactor
Lamp
Star-Delta Starter
Alphanumeric Notation, Graphical
Symbols and Colours
Supply ac
systems
Phase 1
L1
Red
Phase 2
L2
Yellow
Phase 3
L3
Blue
Neutral
N
Black
TYPICAL WIRING FOR REMOTE
/AUTO CONTROL
New areas/enhancement of the scope of
some areas
 Solar Photovoltaic (PV) power supply systems
 Protection against voltage surge _ Electronic Items
 Capacitor bank- Energy efficiency – Project on APFC
Penal on LV side
 Wiring - Revision of IS 732 – Wiring of Electric
Installation under progress
 Lighting – National Lighting Code (NLC)
Solar Photovoltaic (PV)
 In view of the importance of decentralized and distributed applications of solar
photovoltaic energy and the potential of solar lighting systems following have been
considered important:
Solar water pumps and other solar power-based rural applications in changing
the face of India’s rural economy
 Growing usage of SPV in a number of products under various schemes of the
MNRE

Initiative by BIS
 Solar Photovoltaic Energy systems sectional committee, ETD 28 has taken up
formulation of specific product standards covering the various products in vogue
having SPV applications including Solar Lantern as well as Solar water pumps.
 The standards are already under development addressing LED based solar
lanterns.
Solar Photovoltaic (PV)
 In view of the importance of decentralized and distributed applications of solar
photovoltaic energy and the potential of solar lighting systems following have been
considered important:
Solar water pumps and other solar power-based rural applications in changing
the face of India’s rural economy
 Growing usage of SPV in a number of products under various schemes of the
MNRE

Initiative by BIS
 Solar Photovoltaic Energy systems sectional committee, ETD 28 has taken up
formulation of specific product standards covering the various products in vogue
having SPV applications including Solar Lantern as well as Solar water pumps.
 The standards are already under development addressing LED based solar
lanterns.
BASIC STRUCTURE OF PV CELL
NATIONAL ELECTRICAL CODE
• Contains guidelines which can be adopted
immediately
• Harmonized with corresponding IEC standards
• Code is intended to be advisory
• Code is not mandatory
• Should be adopted in interest of safety and
economy
• Keep our electrical installation practices at par with
the best international practices
Considered effort for brining
awareness in key areas
NATIONAL ELECTRICAL CODE
SP 30 : 2011 NATIONAL ELECTRICAL CODE
Available at BIS Sales offices
Available for online sale at BIS sales portal
www.standardsbis.in
Thank You
for your
attention