12V Sailboat Circuit Design

Job ID: 40517693

Budget: €8 – €30 EUR

I need a clear, reliable 12-volt circuit worked out for my small sailing boat.

The system consists of a Lifepo4 house bank of 2x150ah to be wired in parallel, an AGM starter battery for a Volvo Penta MD5 7,5hp diesel engine, the panel is philipi stv 110, there are 10-14 loads to connect.

I already have the components and now need a wiring diagram, cable sizing, fuse and breaker selection, grounding plan and an easy-to-follow installation guide specifically for connecting

AGM Battery
Lifepo Batteries
switch
main fuse
smartshunt
victron dc-dc (to charge the house bank from the starter agm battery)
mppt (to charge the house bank, to add panels later)

Boat is 24-foot hull
I’d like the finished design as soon as possible. I expect to receive:

• Schematic and physical wiring layout (PDF and editable format) including wire size in mm2

• Simple step-by-step installation notes and safety checks

If questions come up during the design, fast turnaround on clarifications will be appreciated so I can finish wiring the boat quickly.