Actually I wonder about clearence and creepage requirement for two conductor in different pcb layers. However during my research, I could not find any clear information. Also there are inconsistencies for normal insulation requirements. For instance, different standards suggests quite different distances for same isolation voltage. I don't know that should I comply with which standard. I examined IPC standard but I could not find creepage requirement for IPC 2221. For example; if I use air gap, what will be according to IPC2221? Are there differences between smps isolation and measurement systems isolation? There are many questions in my head. Can someone recommend to me a book or something detailed source for understand the isolated pcb design requirements.
Thanks in advance.
Thanks in advance.