Izinkomba zokusebenza zalo mkhiqizo zihlangabezana nazo zonke izidingo zobuchwepheshe zamamitha wamandla akhokhelwa ngaphambili wesigaba esisodwa se-electronic ku-GB/T17215321-2008 (Ikilasi 1 kanye ne-Class 2 static AC active watt-hour metres) kanye ne-GBA T18460.3-2001 amazinga.