Short answer: most kits cover panels, a controller and short cables. You will usually still need roof mounts and sealant, a cable entry gland, longer PV cable, a PV disconnect, fuses, a busbar, battery cable and lugs, and a monitor.
| If you need… | Look for |
|---|---|
| Roof | Panels, Z-brackets or mounts, lap sealant, cable entry gland |
| Panel to controller | MC4 extension cable (sized by the wire calculator), PV disconnect/breaker |
| Controller to battery | MPPT, fuse within ~7 in of battery (fuse calculator), cable and lugs |
| Distribution | Busbar or distribution block, main battery fuse/disconnect |
| Monitoring | Shunt battery monitor |
Build your list: tick what your kit already includes.
Order of connection: battery to controller first, then panels. Cover the panels or open the PV disconnect while wiring.
Safety: These are general estimates, not a design. Follow your equipment manufacturer's instructions and local electrical code, and consult a qualified electrician for anything connected to shore power, a house, or high-current batteries.
Panels and mounts, sealant, a roof cable entry, PV cable, a PV disconnect, an MPPT controller, fuses, battery cable and lugs, and ideally a battery monitor.
Usually not. Many include panels, brackets, a controller and short cables, but not long cable runs, disconnects, fuses, busbars or monitors.
It depends on current and distance; run the wire size calculator for your array current and one-way length.
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