First confirm the exact output topology and voltage of the model. The current HF 3–5kW US page lists 120Vac single-phase output; 120/240V split-phase should not be assumed unless the model documentation specifically supports it. A solar inverter and charger also needs a compatible battery bank, correctly designed PV input, adequate grounding and properly sized overcurrent protection. For code-sensitive installations, the certification references should be checked against the exact model and local requirements rather than generalized across the entire HF range. It is also worth confirming whether any future 240V loads would require a different off-grid inverter architecture, since the listed HF models are 120Vac single phase.
