: It provides a specific list of values that should be used for electrical supply systems, helping to unify grids worldwide.
This is the most common range for residential and commercial use. iec 60038 standard voltages pdf 103
: The primary standard is 230/400 V . This was harmonized from older 220/380 V and 240/415 V systems, a transition completed in most of Europe by 2003. : It provides a specific list of values