Annexure 2.4 EHS guidelines
Rev.7, 2025
GENERAL DESIGN GUIDELINES FOR LIGHTING SYSTEMS
1.0 GENERAL:
1.1 Basic Technical Requirements:
The intent of this document is to provide the user with a set of general technical guidelines
while dealing with electrical systems for Lighting. These guidelines generally take into
consideration of the following:
ITC Safety standards
IE Acts and rules
IS/ BS/ IEC/ IEEE standards
National Building Code/ National Electric Code
National Lighting Code
Energy Conservation & Sustainable Building Code
The design guidelines address the application areas for these systems, i.e., for the type of
installation – ware house, factory, office, guest house, general purpose, hazardous, etc. The user
in addition to this document has to refer to the relevant standards/ statutory documents while
detailing their requirements. It should not be construed that this document is adequate for the
detailing purposes.
1.2 Safety Aspects:
Safety at the work place in an industry/ office/ hotel also depends on proper illumination.
Hence, design, selection and fixing of proper luminaries at the work place gains lot of
importance. A good lighting layout will not only reduce accidents at work place but also
increases the productivity of the person.
Under this heading we shall consider the following topics:
Earthing
Protections/ precautions
Stroboscopic effect
1.2.1 Earthing: Light fittings with metal enclosures, receptacles, conduits, panels, switch boxes,
distribution boards, etc., are to be earthed for the safety of the operator/ personnel, as per IS
3043.
1.2.2 Protections/ precautions: The following safety/ energy efficiency measures shall have to be
considered while designing the electrics for lighting:
Earth leakage (30mA) protections for all incomer of the lighting panels.
Use of MCB for short circuit protection and isolation for the maintenance purposes.
1.3 Makes:
1.3.1 The makes for Lighting should be arrived at based on the following parameters:
a) Technical information provided by the manufacturers
b) Field performances
c) Availability in different parts of the country
d) In tune with the latest developments in technology
e) Service backup from the manufacturer
f) Compliance with latest national and international safety & performance standards
Page 1 of 12
, Annexure 2.4 EHS guidelines
Rev.7, 2025
g) ITC requirements/ standards
h) Energy efficiency
i) ROHS (Restriction of Hazardous Substances) and environmental compliance.
1.3.2 While selecting a particular make of equipment, it is suggested that the following points are
studied before making a final decision:
a) Existing makes
b) Performance of the existing makes
c) Standardisation requirements for the installation
d) Availability and serviceability at the place of usage
e) Previous experience with the make selected
1.3.3 Makes for lighting i.e., luminaries & fittings shall be as follows:
MANUFACTURER
Phillips
Osram
Crompton Greaves
Wipro
GE
Bajaj
Baliga
Any reputed make complying with applicable BIS/ IEC Safety standards
2.0 Selection of light source:
2.1 Selection of a suitable light source with an appropriate luminaire is an important aspect in
lighting design. The selection is done based on acceptable optical requirements, economy and
availability.
2.2 The selection of light source depends on the following considerations:
Task to be performed
Colour rendering
Illumination levels and heat output
Character of the area (e.g. Functional, decorative, residential, etc.,)
Locations – indoor, outdoor, hazardous area, etc.,
Mounting height and possible suspension points
Effects of voltage fluctuations and dips
2.3 Colour rendering: The colour rendering property of each type of lamp is designated by colour
rendering index. The higher index suggests better suitability in performing the task of colour
identification and matching.
2.4 The Table below gives recommended illumination levels for various areas (Ref. IS:3646 for
illumination levels):
SL # Area Recommended
lllumination in Lux
1 Unit control room and switchyard control room 500
2 Control rooms other than UCR 300
3 Switchgear/ MCC rooms 200 – 250
4 TG building – operating floor 200
5 Pump house, compressor room, DG house, WT plant, 200
Page 2 of 12
Rev.7, 2025
GENERAL DESIGN GUIDELINES FOR LIGHTING SYSTEMS
1.0 GENERAL:
1.1 Basic Technical Requirements:
The intent of this document is to provide the user with a set of general technical guidelines
while dealing with electrical systems for Lighting. These guidelines generally take into
consideration of the following:
ITC Safety standards
IE Acts and rules
IS/ BS/ IEC/ IEEE standards
National Building Code/ National Electric Code
National Lighting Code
Energy Conservation & Sustainable Building Code
The design guidelines address the application areas for these systems, i.e., for the type of
installation – ware house, factory, office, guest house, general purpose, hazardous, etc. The user
in addition to this document has to refer to the relevant standards/ statutory documents while
detailing their requirements. It should not be construed that this document is adequate for the
detailing purposes.
1.2 Safety Aspects:
Safety at the work place in an industry/ office/ hotel also depends on proper illumination.
Hence, design, selection and fixing of proper luminaries at the work place gains lot of
importance. A good lighting layout will not only reduce accidents at work place but also
increases the productivity of the person.
Under this heading we shall consider the following topics:
Earthing
Protections/ precautions
Stroboscopic effect
1.2.1 Earthing: Light fittings with metal enclosures, receptacles, conduits, panels, switch boxes,
distribution boards, etc., are to be earthed for the safety of the operator/ personnel, as per IS
3043.
1.2.2 Protections/ precautions: The following safety/ energy efficiency measures shall have to be
considered while designing the electrics for lighting:
Earth leakage (30mA) protections for all incomer of the lighting panels.
Use of MCB for short circuit protection and isolation for the maintenance purposes.
1.3 Makes:
1.3.1 The makes for Lighting should be arrived at based on the following parameters:
a) Technical information provided by the manufacturers
b) Field performances
c) Availability in different parts of the country
d) In tune with the latest developments in technology
e) Service backup from the manufacturer
f) Compliance with latest national and international safety & performance standards
Page 1 of 12
, Annexure 2.4 EHS guidelines
Rev.7, 2025
g) ITC requirements/ standards
h) Energy efficiency
i) ROHS (Restriction of Hazardous Substances) and environmental compliance.
1.3.2 While selecting a particular make of equipment, it is suggested that the following points are
studied before making a final decision:
a) Existing makes
b) Performance of the existing makes
c) Standardisation requirements for the installation
d) Availability and serviceability at the place of usage
e) Previous experience with the make selected
1.3.3 Makes for lighting i.e., luminaries & fittings shall be as follows:
MANUFACTURER
Phillips
Osram
Crompton Greaves
Wipro
GE
Bajaj
Baliga
Any reputed make complying with applicable BIS/ IEC Safety standards
2.0 Selection of light source:
2.1 Selection of a suitable light source with an appropriate luminaire is an important aspect in
lighting design. The selection is done based on acceptable optical requirements, economy and
availability.
2.2 The selection of light source depends on the following considerations:
Task to be performed
Colour rendering
Illumination levels and heat output
Character of the area (e.g. Functional, decorative, residential, etc.,)
Locations – indoor, outdoor, hazardous area, etc.,
Mounting height and possible suspension points
Effects of voltage fluctuations and dips
2.3 Colour rendering: The colour rendering property of each type of lamp is designated by colour
rendering index. The higher index suggests better suitability in performing the task of colour
identification and matching.
2.4 The Table below gives recommended illumination levels for various areas (Ref. IS:3646 for
illumination levels):
SL # Area Recommended
lllumination in Lux
1 Unit control room and switchyard control room 500
2 Control rooms other than UCR 300
3 Switchgear/ MCC rooms 200 – 250
4 TG building – operating floor 200
5 Pump house, compressor room, DG house, WT plant, 200
Page 2 of 12
