Amendment status not verified — confirm the current text below against the official source.
(1) All HT and EHT consumers and the applicants for supply of electricity at HT or EHT shall, while installing new transformers or replacing existing transformers, install step-down transformers with a vector group having delta winding on the high voltage side and star winding on the low voltage side: Provided that step-down transformers with star winding on both the high voltage and the low voltage sides, may also be used if a delta tertiary winding is provided on the high voltage side for preventing the harmonics from entering the low voltage side: Provided further that in the case of existing transformers with a different vector group, the above provision will be applicable only when they are replaced. (2) The neutral terminal shall be earthed [as provided in the Central Electricity Authority (Measures Relating to Safety and Electric Supply) Regulations, 2010]. (3) The capacity of the transformer to be installed by the consumer who avails supply of electricity at 'time of the day tariff' (ToD tariff), may be determined considering the upper limit as specified by the Commission in the tariff order, up to which the contract demand can be exceeded without penal rates during off peak hours. Substituted by Notification published in K. G. Ext. No. 1267 dt. 25/05/2015. Prior to the amendment it read as "by a method approved by the Electrical Inspector or Central Electricity Authority"