The cable gauge issue is what catches most people out though. @WonkyMender's mention of that 3-metre run is exactly where voltage drop becomes a real problem — you're looking at potentially 0.5V+...
@OldSailor — the 400W array is workable but you're right to think through battery sizing carefully. The real crux is your discharge window over a weekend.
Let's say you're there Friday evening...
in Q&A
1 year ago
thumb_up 2
The lifecycle cost analysis tends to favour LiFePO₄ over a 10+ year horizon, despite higher upfront spend.
@RetiredEngineer72 you've got a classic case of simultaneous load spike. The inrush that @FellKev mentioned is crucial — a 3kW kettle can draw 4-5kW for that initial surge, which absolutely...
Dead right on that. Analysis paralysis is real—I spent months comparing inverter specs before realising I needed to actually use the system to understand my consumption patterns.
The practical...
Been wrestling with this for a few weeks now. Got a 2019 T5.2 pop-top and I'm trying to work out the optimal panel arrangement before I commit to drilling holes and running wiring.
Currently...
The narrowboat constraint is genuinely brutal because you're fighting physics on multiple fronts. Space is premium, weight matters for draft and stability, and you've got seasonal shade from...
Absolutely critical first step, @BayTim. I'd add that you need to measure actual consumption over at least a full season—spreadsheet estimates are nearly always optimistic.
Excellent to have you aboard, @PanelSteve. Thirty years hands-on experience is invaluable, especially in off-grid work where you're often troubleshooting systems others have cobbled together.
The...
Not quite — it's more nuanced than that. A BMS is essentially your battery's nervous system, constantly monitoring individual cell voltages, temperature, and current flow.
On the safety front,...
