Electrical Disconnect Boxes. Solar system electrical disconnects (a/k/a disconnect boxes)? Love em. Gotta have em. In fact, the National Electric Code (NEC), section 690.15, requires arrays to have a disconnecting means to isolate the inverter from the PV power source. Utility grid-tie inverters that utilize PV arrays with voltages above 250VDC require disconnect boxes rated for 600VDC to perform this function. Most utilities also require an AC disconnect between a grid-tie inverter and the AC load center (close to the AC service entrance, with a visible/lockable handle). 30A 240V Electrical disconnect boxes are good for up to 5kW at 240VAC, 60A are good for up to 11kW.
Get the right electrical disconnect boxes for your system here!