Plug Fuses- Edison Base, Rejection Base, Box Cover Units wwwerindustries››FusesIn addition to a fuse holder, many accessories make these units more convenient. When a switch is used (SS Series) it turns the fused power to the load on and off. The receptacle (SR Series) allows motors to be plugged into the fused circuit. All box cover units are UL Listed for a maximum 15 amp fuse at 125Vac (except as noted). Understanding An Old School Fuse Box - YouTube Click to view on Bing6:57Nov 07, 2016Here's a quick review of how to use a fuse box (with the screw-in fuses) safely and some discussion about what to look out for in an old house. Understanding An Old School Fuse BoxAuthor: enduringcharmViews: 150K