Generally, yes, grounding the system negative and fusing the positive leads at the SOURCE of unlimited current flow (e. g, the battery, etc) is a good idea. The concept is that any fault will blow the fuse before burning up wiring. Equipment Protection: Electronic devices, especially solid-state components, are highly sensitive to transient electrical disturbances. A robust. Why do DCS vendors require grounding the negative terminal of 24VDC power supplies? What happens if a grounded DC system develops a ground fault on the ungrounded leg? Is it safe to run a 24VDC control system ungrounded? What wire size is required for grounding the negative terminal of a 24VDC. Maybe connect GX tank input at battery negative to make this way a isolation detection? Is it advisable to ground chassis ground to keep minus potential the same as chassis? In many cases, yes. Sounds like you are talking about a vehicle, so the original eletric system will use a grounded negative. Is ground on my board the negative terminal on my battery? Explicitly should I connect the ground to the negative terminal of the battery? You can pick any point in a circuit and call it ground. Did someone else design the circuit? Did they label a point ground? Did they show how. All communication devices and auxiliary devices (such as mobile base stations, transmission and switching devices, power supply devices) in the equipment room should be grounded for protection. Key aspects include ensuring BMS circuits are electrically isolated from the chassis to prevent ground loops and.