How Do You Calculate 3 Phase Power?
A 3-phase power circuit consists of three conductors of alternating current combined into a single power line. The current in each conductor is 1/3 cycle out of phase with the other two. This arrangement produces a smoother power flow and permits lower line voltages. Three-phase power circuits are commonly used in heavy-duty systems such as power transmission lines and large electric motors. However, the procedure to calculate 3-phase power differs from that used for conventional circuits because the relationship between current (amperes), voltage and power consumption (watts) is different. Determine the line voltage. Most of the large systems that use 3-phase circuits are equipped with instruments that provide this information. Alternatively, check the manufacturer’s operating manual for the system. Measure the current flow in amperes. Again, you can usually get this from instrument readings. However, you may need to independently verify the current flow in some situations. The easies
