My 750W solar is 100V @ 8A and I use a HD A/C disconnect switch to disconnect both positive and negative wires. The inside wires have split loom and are located behind cabinet panels. The basement wires are visible and have split loom to the switch and CC. No fuse on the solar wires as one is not needed. The battery side is a 80A surface mount CB.
The basement wires are labeled including instructions for switch sequence usage and the switch sequence label is also in the battery compartment.
Yes I know the A/C switch is not DC rated but for my use and application I would expect it to last a very long time. But available everywhere for $15.