IS : 3043 -1987 CODE OF PRACTICE FOR EARTHING(REACTANCE GROUNDING)
What is the process of Earthing?
In order to make sure the electrical appliance is safe, grounding/earthing or electrodes placed underground or near the soil are connected to the earthing/earthing system.
Earthing mats or electrodes with flat iron risers are installed beneath the ground’s surface. A mat or electrode with a flat iron riser is installed beneath the ground’s surface to conduct electricity.
If an overload current passes through the equipment or if the fault current causes a system fault, the fault current travels via the earthing system. A ground fault multiplies the earth mat’s resistance by the earth mat’s conductors, raising the voltage by the same amount. A fault current or overload can damage the equipment in this way.
Wires in a building are divided into three types: live, neutral, and earth. A buried metal plate connects the ground to the power plant and carries electric current from live and neutral conductors.
The ground wire is connected to all electrical equipment when it is in use, including TVs, iron boxes, heaters, coolers, stand fans, and refrigerators.
AMENDMENT NO. 2 JANUARY 2010
TO
IS 3043 : 1987 CODE OF PRACTICE FOR EARTHING
(First Revision)
(Page 17, clause 8.6) — Add the following new sub-clause after 8.6:
8.6.1 Corrosion Allowance — On an average, steel corrodes about six times as fast as copper when placed in
soil. The extent of corrosion depends upon the properties of soil. The generally accepted correlation between the
electrical resistivity of soil and its corrosivity is as indicated in the table below:
For the purpose of determining the allowance to be made for corrosion, the minimum resistivity of
the soil encountered at the location of grounding electrodes to be considered The. resistivity will be
the minimum in wet weather. Thus, for very mildly corrosive soils, steel conductors meeting the
stability and mechanical requirement are adequate. However, the steel conductors in the soil of other
types should be at least 6 mm thick if it is steel flat and have a diameter of at least 16 mm if it is in
the form of steel rod.
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