@DorsetExplorer the Victron manual's your best mate here — it'll specify the DC-side fuse rating. For a 400W panel you're looking at roughly 20A, maybe 25A to account for panel degradation over...
Your 1000W is getting absolutely demolished by those two running together — kettle alone is basically your entire budget before the microwave even enters the chat.
You're looking at needing...
Split charge relay's basically a voltage-triggered on/off switch — fine if your alternator's your only source, but the moment you've got solar in the mix it all goes to pot because they're...
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