A single sample per mains cycle applied to load current and supply voltage is sufficient to measure power consumption, {HEAD ~ energy consumption accumulation}, and produce accumulated energy pulses appropriate to measurement of real power, {TAIL ~ true power} and volt ampere power consumed by the load 
A single sample per mains cycle applied to load current and supply voltage is sufficient to measure power consumption , { HEAD ~ energy consumption accumulation } , and produce accumulated energy pulses appropriate to measurement of real power , { TAIL ~ true power } and volt ampere power consumed by the load
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH