Sanity Check on Electrics

Many thanks for the very informative response Shane. I shall sit down and go through those links this afternoon one I have finished my chores.

Hi Graeme,

Here’s some initial feedback for you:

• You need to install two consumer units in this system

  • Shore power consumer unit between battery charger and mains inlet (Guide here: https://www.thevanconversion.com/post/how-to-install-a-mains-electrical-plug-inlet-hook-up-in-your-van-conversion-shore-power )

  • Inverter consumer unit between inverter and plug sockets (Guide here: https://www.thevanconversion.com/post/this-is-how-to-install-an-inverter-in-your-van-conversion-2022)

• I recommend running your negatives to a negative bus bar and your positives to a positive bus bar. It keeps things organised and you use less cable than running everything directly to the battery.

  • You should also install an isolator switch between the battery and the bus bar on the positive line.

• There’s no fuse between the inverter and the battery apart from the terminal fuse (M8 300A). This might be enough depending on cable length, but if the cable run is longer than ~30 cm, a dedicated fuse or breaker near the inverter input would be safer.

• No ground shown. Grounding is essential for AC and DC system. Keep grounds seperate. Here’s the guide: https://www.thevanconversion.com/post/this-is-how-to-ground-van-conversion-electrics-the-right-way

• For wire sizing, I recommend you use the calculator here: https://www.thevanconversion.com/wire-sizing-calculator

• It might be worth your time to check out The Van Conversion Electrical Masterclass: https://www.thevanconversion.com/electrical-masterclass

I can tell you have a decent understanding of the system components, there’s just a bit more work to be done to make this a safe system!