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Many sceptics thought it was impossible to achieve NMI Approval for a Multifunction Electricity Meter designed in a compact DIN rail footprint. In fact many doomsday forecasters predicted electrical switchboard enclosures, distribution boards, riser/cupboard spaces for multifunction metering would have to be increased in size to accommodate larger electrical metering to be in compliance for Energy Meters per NMI M 6-1.

SATEC (Australia) are the first manufacturer and supplier of NMI approved current transformers for use with their SATEC BFM136 Branch Feeder Monitor.

SATEC continue to set the standard in Energy Metering design with the release of the NMI Approved BFM136 Multi Circuit Meter, suitable for use on multiple electrical circuits.

Any din rail electricity meter used for sub-metering is now required to comply with NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.