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If you need only the CT, please check this: >>>Here Many buyers are response: Why test data is wrong? Voltage * Current = Power, But power is less than the actual test voltage * Current, Why is that? Answer: There are three types of power: Active Power (P represents / unit W) Reactive power (Q represents / unit Var) Apparent power (S represents / unit VA) Here that We only talk about Active Power, others please google it: P = U * I * cos cos it represents the power factor, purely resistive load (Such as incandescent, heater, etc.) the power factor is generally close to 1,Between the inductive and capacitive load load power factor 0-1. So purely resistive load test time, P is substantially equal to or close to U * I. When Inductive or capacitive load test (Such as refrigerators, washing machines, televisions, computers, etc.) P