Section 8(6) in Rajasthan Electricity Regulatory Commission (Metering) Regulations 2007
(6)Current Transformers:(i)"Interface meters" and "Energy accounting and audit meters" shall have three single phase current transformers. The secondary current rating of the CTs shall normally be 5.0 Amp or 1 Amp except for 400kV and 220kV sub-stations where it shall be 1 Amp.(ii)Consumer meter.External current transformers, where required to be provided, on consumer meters shall generally have 5 Amps secondary current rating. The licensee shall prepare norms for selection of the CT ratio for consumer connections.
