Status: Solved 🟢
The Issue: The inverter was cutting off prematurely under heavy kitchen loads (kettle, air fryer). I originally suspected a weak 150A hardware breaker.
The Discovery: The real culprit was a simple software setting. Both charge controllers were set to the default Sealed Lead-Acid (SLA) profile instead of LiFePO4. Under heavy loads, the SLA profile allowed the voltage to sag instantly, triggering the inverter's low-voltage panic mode.
The Fix: Swapped both the PowMr and Renogy controllers to the native LiFePO4 profile. The system now cleanly handles pass-through power, holding steady voltage while the solar array directly covers the appliance loads.
Status: Solved 🟢
The Issue: A standard factory SAE solar plug on the portable array was choking the system, turning valuable energy into extreme heat. Under peak sun, the plug hit a dangerous 170°F and fused itself shut.
The Fix: Snipped out the bottleneck entirely and crimped heavy-duty, marine-grade 10AWG wire using clicked-together MC4 connectors. The new junction runs perfectly cool at ambient room temperature, maximizing the output of the 740W array.
Status: In Progress 🟡
The Issue: Even with dual 2 AWG parallel runs to the inverter, voltage dips down to 11.7V during peak draw.
The Suspicion: Factory-supplied inverter lines are highly likely Copper Clad Aluminum (CCA), which carries only ~61% of the conductivity of true copper.
The Plan: Pulling the mystery factory lines out completely and replacing them with a single, verified, heavy-duty run of true 1/0 AWG Oxygen-Free Copper (OFC) lines to stabilize peak current delivery.