Photovoltaic (PV) array installations mounted on home rooftops require DC ground fault protection (GFP). A GFP device is a specialized breaker or circuit designed to “monitor” the current between the grounding system and the grounded conductor at the point where they are connected together (or “bonded”). If a voltage imbalance occurs due to a ground fault, the GFP will open the circuit, and prevent the PV array from providing electricity to the rest of the system. In this instance, the GFP will also provide a visible indication that a ground fault has occurred. An installed GFP device typically provides the connection between the negative conductor and the grounding system. Therefore, the DC negative conductor must be kept isolated from the grounding system at other points in the DC circuit wiring. With most GFP systems, multiple PV arrays and inverters will each have their own ground fault protection devices, each with its own connection for the DC negative conductor to the grounding system.