Hi Mike4321,
After 1990, IEC had decided to number their standards starting from 60000 to be in line with European Standards(EN-Europen Norms). Therefore all IEC standards now start with 60 or 61 in front of the existing standard number. For example IEC 332 is now IEC 60332, IEC 34 is simply 60034, IEC 1008 is IEC61008 and so on.
Regards!
Kiribanda :->