In cases where direct earthing may prove harmful rather than provide safety (for example, high frequency and mains frequency coreless induction furnaces), relaxation may be obtained from the competent authority. Earth electrodes shall be provided at generat- ing stations, substations and consumer premises in accordance with the requirements of this Code. All medium voltage equipment shall be earthed by two separate and distinct connections with earth. In the case of high and extra high voltages, the neutral points shall be earthed by not less than two separate and distinct connec- tions with earth, each having its own electrode at the generating station or substation and may be earthed at any other point provided no interfer- ence is caused by such earthing. If necessary, the neutral may be earthed through a suitable impedance. As far as possible, all earth connections shall be visible for inspection. All connections shall be carefully made; if they are poorly made or inadequate for the pur- pose for which they are intended, loss of life or serious personal injury may result. Each earth system shall be so devised that the testing of individual earth electrode is possible. It is recommended that the value of any earth system resistance shall be such as to conform with the degree of shock protection desired. It is recommended that a drawing showing the main earth connection and earth electrodes be prepared for each installation. We, at Atul Casting and Metal Works manufactures all earthing related products such as G.I Strips, G.I plates, G.I Rods, G.I Pipes, C.I covers, Cable Trays, G.I Wire, Manhole Covers and Route Markers for past 50 + Years in heart of New Delhi. Call us at +91 9873361672 for best deals.