Installation Guidance Explained
The Installation Guidance tab is where the result starts to feel more physical. It takes the system that has already been sized and shows the likely cabling, interconnect, protection, and routing burden around it.
What this tab is for
A result can look tidy on the Battery, Inverter, or Solar tabs and still be awkward to install cleanly. This tab is there to surface that early.
The app is also careful about the boundary here. The Indicative only note is not decoration. This section is for planning and review. It is not final electrical design or sign-off.
Headline metrics
The first metric cards give a compact picture of the installation burden. These include Battery-side current, PV-side current, AC output current, Battery cable total, PV cable total, AC cable total, Cable slack, Protection safety margin, and AC voltage source.
DC distribution scenarios can add DC-side current, DC cable totals, direct bus loads, converter bus loads, converters, downstream distribution boards, and DC protection summaries.
They are orientation values. Before you get lost in the detail, they tell you whether the system is heading toward a light install or a more demanding one.
Connection summaries and planning notes
Below the headline metrics, the tab shows a set of summary and note cards. These can include Battery connection summary, Battery distribution recommendation, PV connection summary, PV combining recommendation, Installation warnings, Fallback notes, and Edge-case notes.
These notes often explain why the detailed cards look the way they do. They can show where the app is assuming busbar-style distribution, where PV combining starts to make sense, or where the result needs a little more caution.
Detailed installation cards
The detailed cards break the installation layer into practical sections: Battery cabling, Battery interconnects, Battery protection, PV cabling, PV interconnects, PV protection & combiner, AC output, and DC-specific sections such as DC Interconnects, DC Protections, and DC Side where the scenario supports them.
These cards show route assumptions, main and feeder runs, cable counts, material, cable type, environment, voltage-drop targets, indicative current requirements, interconnect counts, string layout, protection-device suggestions, device counts, and suggested locations.
The point is not to hand you a final shopping list. The point is to expose pressure points while you still have room to rethink the scenario.
What this tab does not do
This tab does not turn GridGap into a code-compliant cable-sizing engine, a final breaker-selection tool, or a certified installation design system. It is not a replacement for final professional checks.
Use it to understand installation implications earlier, not to skip detailed review later.