BIS IS 3043 : 1987(R2016)

0. FOREWORD
1. SCOPE
SECTION 1 - GENERAL GUIDELINES
2. TERMINOLOGY
3. EXCHANGE OF INFORMATION
4. STATUTORY PROVISIONS FOR EARTHING
5. FACTORS INFLUENCING THE CHOICE OF EARTHED
   OR UNEARTHED SYSTEM
6. SYSTEM EARTHING
7. EQUIPMENT EARTHING
SECTION 2 - CONNECTIONS TO EARTH
8. RESISTANCE TO EARTH
9. EARTH ELECTRODES
10. CURRENT DENSITY AT THE SURFACE OF AN
    EARTH-ELECTRODE
11. VOLTAGE GRADIENT AROUND EARTH ELECTRODES
12. CONNECTIONS TO EARTH ELECTRODES-EARTHING
    AND PROTECTIVE CONDUCTORS
13. EARTHING ARRANGEMENT FOR PROTECTIVE PURPOSES
14. EARTHING ARRANGEMENT FOR FUNCTIONAL PURPOSES
15. EARTHING ARRANGEMENTS FOR COMBINED PROTECTIVE
    AND FUNCTIONAL PURPOSES
16. EQUIPOTENTIAL BONDING CONDUCTORS
17. TYPICAL SCHEMATIC OF EARTHING AND PROTECTIVE
    CONDUCTORS
SECTION 3 - EARTH FAULT PROTECTION ON CONSUMER'S
            PREMISES
18. EARTH FAULT PROTECTION IN INSTALLATIONS
19. SELECTION OF DEVICES FOR AUTOMATIC DISCONNECTION
    OF SUPPLY
SECTION 4 - POWER STATIONS, SUBSTATIONS AND OVERHEAD LINES
20. EARTHING IN POWER STATIONS AND SUBSTATIONS
21. EARTHING ASSOCIATED WITH OVERHEAD POWER LINES
SECTION 5 - INDUSTRIAL PREMISES
22. GUIDELINES ON EARTHING OF INDUSTRIAL PREMISES
SECTION 6 - STANDBY AND OTHER PRIVATE GENERATING PLANTS
23. EARTHING IN STANDBY AND OTHER PRIVATE GENERATING
    PLANTS (INCLUDING PORTABLE AND MOBILE GENERATORS)
SECTION 7 - MEDICAL ESTABLISHMENT
24. PROTECTIVE MEASURES THROUGH EARTHING IN MEDICAL
    ESTABLISHMENT
25. SUPPLY CHARACTERISTICS AND PARAMETERS
SECTION 8 - STATIC AND LIGHTING PROTECTION EARTHING
SECTION 9 - MISCELLANEOUS INSTALLATIONS AND CONSIDERATIONS
28. EARTHING IN POTENTIALLY HAZARDOUS AREA
29. TELECOMMUNICATION CIRCUITS AND EQUIPMENT
30. BUILDING SITES
31. MINES AND QUARRIES
32. STREET LIGHTING AND OTHER ELECTRICALLY SUPPLIED
    STREET FURNITURE
33. EARTHING OF CONDUCTORS FOR SAFE WORKING
34. MAINTENANCE OF EARTH ELECTRODES
SECTION 10 - MEASUREMENTS AND CALCULATIONS
35. CALCULATION OF EARTH FAULT CURRENTS
36. MEASUREMENTS OF EARTH RESISTIVITY
37. MEASUREMENTS OF EARTH ELECTRODE RESISTANCE
38. MEASUREMENTS OF EARTH LOOP IMPEDANCE
SECTION 11 - DATA PROCESSING INSTALLATIONS
39. EARTHING REQUIREMENTS FOR INSTALLATIONS OF DATA
    PROCESSING EQUIPMENT
40. EXAMPLE OF THE USE OF TRANSFORMERS

Specifies guidance on the methods that may be adopted to earth an electrical system for the purpose of limiting the potential (with respect to the general mass of the earth) of current carrying conductors forming part of the system, that is, system earthing and non-current carrying metal work association with equipment, apparatus and appliance connected to the system.