A parallel DC main distribution system is the best way to provide a cross connect when necessary while maintaining isolation between the two banks. A parallel circuit is one which contains two or more branches for current to flow, but has a common voltage across every parallel connected component A DC Parallel Circuit, or a “shunt-connected circuit”, is the connection of individual electronic components which have a common voltage source. Distribution box parallel wiring "Parallel wiring" in electricity refers to the gathering of multiple wires together and then wiring. This connection method has a proprietary name in the distribution box-jumper. In order to better let everyone understand "jumper", let's take a look at a photo. In a parallel circuit, all components share the same electrical nodes. Although it may be drawn oddly, there are only two common connection nodes in this configuration: one along the top and the other along the bottom (if you're having difficulty. A feeder carries electricity to a substation, bus, or several loads.