Proper Method to Ground an Old Electrical Fuse Box Mar 01, 2016Inside the Fuse Box: A neutral bar (a metal strip with terminals for various connections) receives the bare ground wire, connecting the power supply to the ground rod. Another wire should connect the neutral bar to the neutral wire of the main power supply. Grounding Outlets. Old fuse box electrical systems were installed with ungrounded outlets. Where do you connect the ground cable to a fuse box? - Quora Mar 02, 2018Ground wire connections and fuse box wiring have major safety implications. Quora, or the internet in general, is not the right place to go for guidance in these matters. Call in a licensed contractor to do the job, or study and/or take courses yourself to learn how to do that kind of work.