What are identifiers on motors that are manufactured under the NEMA standard and IEC standard that enable you to differentiate them?

Motors manufactured under the NEMA standard will always have well defined and standardized connection terminal wire markings; the ÒTÓ, for terminal, marking system.Motors manufactured under the IEC standard, however, will not have well defined and standardized connection terminal wire markings, because the IEC standard does not define them.The IEC standard defines other mounting and operating characteristics of the motor, and leaves the details of how the other requirements are accomplished up to each individual motor manufacturer.