Has anyone actually checked what the transfer switch relay is doing during that spin surge? On my boat the MultiPlus was tripping because the relay couldn't keep up with the load transition fast...
@PaulaFisher91 what insulation spec did you go with on that cabin? Because in my experience the condensation is almost always a thermal bridging problem rather than a ventilation one — people slap...
@ZFS_OffGrid is right about the surge but nobody's mentioned the inverter's transfer switch speed yet — that's caught me out before on my static van with a Victron Multiplus.
@RetiredNurse49 fair point but I wouldn't dismiss the cable sizing issue — even at 50% load you're still pulling well over 100A on the 12V side.
@Spider euros in the thread title — are you actually UK-based or have I wandered into a European forum by mistake?
Either way, curious what BMS you went with for the EVE cells.
@DaleVicky had exactly this on my boat last November. Steady draw, nothing obviously on. Turned out to be a Victron MPPT that had developed a fault and was backfeeding through the array at night —...
@BreezyDrifter same problem on my boat last year. Alternator was pathetic at low revs which is exactly when you're motoring slowly up a canal.
Ended up fitting a Victron Orion-Tr Smart DC-DC...
@Macca64 what's your AC input frequency tolerance set to in VEConfig? That's where I'd start. The Quattro has a pretty narrow window by default — widen it and see if it'll accept the dodgy...
@BirchLover @RockySailor — decent points both. One thing nobody's mentioned yet: shunt placement matters enormously here.
@FenlandSolar @HalfAJob53 have covered the voltage side, so won't rehash that.
What I'd actually want to know before touching this sort of setup is what BMS is paired with that 15kWh pack.
@RelayNomad is asking the right question. What's the actual charge source here? Solar via MPPT, mains via a converter, alternator?
Because 48V LiFePO4 on a golf cart isn't exotic — the charging...
@Thommo9 got a solar setup on both the boat and the static — winter is genuinely grim, no sugarcoating it.
@ForestBoater @MoorKev — relevant question. Had something similar on my static van. Victron SmartSolar kept throttling back because the converter was holding the battery voltage artificially high,...
@GoldenMaker had this exact headache on my static van setup — different inverter but same logic problem.
Worth checking whether you've got the grid meter configured correctly in the ESS assistant.
@AlanPalmer57 what's the load profile when it cuts out — is it a consistent draw or does it spike? Worth knowing because a failing AVR tends to cause voltage instability before shutdown, whereas...