The IEC doesn’t just make the standards in a vacuum, however. They really, really don’t want you accessing their documents without first coughing up. Unfortunately, this information is kept behind a paywall. Want to know how to electrically measure sound loudness? Test methods for digital door lock systems? Or maybe you’re interested in safety interlock systems for laser processing machines. How wide? Their mandate seems to span rules for household product safety to the specification of safety logic assemblies in nuclear power plants.
The International Electrotechnical Commission (IEC) is an international body that issues standards on a wide range of electronics-related topics.