Does anyone know how to calculate the size of branch fusing and branch wire size for a branch having multiple loads (i.e. a branch having one PLC, computer, printer, 2 DC drives, touchscreen, and miscellaneous instrumentation) Most of these loads have maximum current or FLA ratings which these devices will probably never see and there are no typical current ratings for most of the devices. If all of the FLA currents are used to size the fuse then the fuse size will be very large and seemingly unnecessary. Loads that are not ON at the same time has already been accounted for. What is the industry accepted or standard practice for sizing these type of branch fuses??