Hi, Sorry to necro such an old thread, but its related anyway.

I have a house, which is always "vacant" . But when I check the TNB app, daily its consuming , I kid you not , 4-5KWH per day consistently

The meter is already converted to Smart Meter and its wiring is already came with 3 phase wiring.

What I did was :

i) I have a Kilowatt measurement meter, which plugs in any electrical device to measure.
So I measured my Samsung inverter fridge as the first culprit. (and also the fridge does not have any 5 star TNB energy rating sticker)

As I measured after slightly more than 24 hours, it consumes around 1.1Kwh and its time electrical usage recorded is around 17 hours 45 mins (meaning the remaining 6 hours 15 mins it is recorded sleeping at 0 watts)

2) Yes I have few lights turned on, but they are either LED or energy saving bulbs. They couldn't had consumed so much. 

3) I have tried turning off the ELCB and Mains , checked the smart meter and confirmed it measures zero Amps in each phase.

4) When I checked the Smart Meter ,amps per phase, it shows around <0.1 Amps per phase. With exception at one point of time, it was showing 0.7Amps on Phase 1 due to fridge compressor running.

5 kwh is around 20.83 Amp hours. That translate to 0.87 Amps hour

I cannot brain, where has the remaining 3-4Kwh gone?   Not even an aircond is turned on.