2. The petitioner is a private limited company which had set up an industrial unit and engaged in the manufacture of mild steel ingots at Timmapur Village, Kothur Mandal, Mahaboobnagar District. It obtained a high tension power supply for the purpose of the said industry. While so, the third respondent issued a notice on 18.08.2005 by invoking Condition No.22.3.3.3 of the Terms and Conditions of Supply proposing to do back billing for the period from 23.09.2004 to 23.03.2005 on the ground that on 05.02.2005 the service connection of the petitioner was inspected by the DE/DPE and found that the voltage recorded was unbalanced and consequently requested the MRI Wing to replace the potential transformer which is the integral part of the meter. Thereafter, on 24.03.2005, the defective Y-Phase PT was replaced and there was an error of 4.07% on the negative side by the meter. Accordingly, DE/DPE proposed to assess the shortfall units at 1,34,212 KWH for the above period and proposed to levy a sum of Rs.6,13,286/-. Thereafter, the second respondent passed an order on 23.11.2005, deciding that the petitioner’s meter was defective and assessed the shortfall of Rs.6,13,286/- for the period from 23.09.2004 to 23.02.2005.