Tamil Nadu Electricity Regulatory Commission has notified new provisions in the Tamil Nadu Electricity Distribution Code, mandating installation of Residual Current device in all electricity connections in both single and three-phase connections of all constructions.<br />'' <br />''The Electricity Board said that the residual operating current not exceeding 30 milliampere must be installed to avoid electrical shock and protect life of the human beings. Larger electrical loads exceeding 10 KW like big shops, malls, hospitals, godowns, large scale industries, also need to install a common RCD at the point of commencement of supply with rated residual operating current of 300 milliampere to avoid electrical shock.<br />'' <br />''<span style="color: #222222;">To avoid nuisance tripping in installations of larger loads, the electrical circuits should be subdivided according to loads/ segregation of floors or building portions as per the site conditions and an independent RCD shall be provided for each sub-divided circuit, so that the people in each portion of the building shall be protected from electrical shock in case of electrical faults in that particular portion of the building. The electricity board said that No service connection shall be effected, unless an RCD is installed and safety to the inmates is ensured. </span><br />