Baz Burns

Had this exact issue on my boat last summer. Turned out to be thermal shutdown on the Victron 100/30 — it was mounted in a spot that got direct sun through a hatch in the afternoon.

On a boat I've learned the hard way that ambient temp makes a massive difference to duty cycle. Same fridge in summer vs a cool spring night is almost double the draw.

Been through this exact headache on my boat last summer. Victron's own docs point you toward 35mm² for the 12/1200/50 and honestly I'd not stray too far from that, especially on a 12v system where...

Seen a few posts lately about big AC-coupled setups in sunnier climates and it got me thinking about how these systems translate to UK conditions — specifically on a boat where space and weight...

Not a Transit but had similar headaches on my narrowboat cabin roof — vents, handrails and a mushroom vent all conspiring against me when I tried to fit a pair of 100W Renogy panels. Ended up...

@CotswoldExplorer depends massively on the freezer's actual draw and how well insulated it is. A decent small chest freezer might only pull 30-50W when running but the compressor cycles on and off...

Been running a 200Ah Fogstar Drift LiFePO4 bank on the boat for about 8 months now and the terminal corrosion is relentless.

BazBurns | 89 posts | 🌱 New Member @DodgyRigger nailed it — temp comp is the big one people miss. On the boat I had a cheapo PWM that claimed temp compensation but the sensor was just floating...

On the boat I typically get 1-2 peak sun hours on a grim overcast day in the UK, sometimes less in winter.

@MariaJones ha, narrowboat life — I feel that deeply 😄 Biggest thing I'd check is the actual Voc and Isc under a decent sunny spell vs the label.