Abstarct: The use of Distributed Generation in distribution systems has many benefits, but also presents many challenges. Notable among these challenges is the distributed generation effects can have on overcurrent protection. Because of that power systems initially have been built for simple one-way power delivery, interconnecting small generators requires new thinking and new methods for operating the network with new challenges. Small-scale generators located on the distribution level are generally referred to as distributed generation (DG) Three potential issues may occur concerning recloser operation and its downstream fuses are fuse fatigue, nuisance fuse blowing, and fuse misoperation. The cause of these problems the issues is due to the redistribution of the fault current on the feeder between the DG and the substation. Fuse fatigue arises when the fuse begins to melt before the recloser’s fast operation. Such operation of the fuse may not result in permanent outage during the fault. Nuisance fuse blowing occurs when the fuse blows prior to the recloser’s fast operation. The result of nuisance fuse blowing is a permanent outage on the faulted lateral. Fuse misoperation is caused by the infeed current from the DG to a fault that is located outside the lateral protected by the fuse. An individual fuse misoperation may result in unbalance in the unfaulted phases. In the worst case, the occurrence of these issues may result in unwarranted permanent outage and islanding during a temporary fault. In the previous studies completely mitigated the fuse misoperation and nuisance fuse blowing issues, but the fuse fatigue issues on the radial test feeder are not completely eliminated. Because fuse fatigue occurrence is an unavoidable event with presence of DGs, that’s supposed to find an approach to minimize the OCP schemes change or determination size of DGs in radial feeders considering fuse fatigue issues. In this paper, "Imperiled Fuses" are introduced with a new algorithm and revisory decisions are presented. Then maximum size of DG installation at four specified locations is determined. The new approach is validated by using the IEEE 34 node radial test feeder. That was simulated in DIgSILENT Powerfactory version 14.520.