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CAMPERVAN

Campervan shore power inverter charger single line diagram

This campervan electrical system single line diagram shows a 230 V shore-power and 12 V inverter-charger arrangement. A 16 A campsite hookup passes through a 30 mA Type A RCD and AC main MCB to a transfer switch. The switch can select shore power or the output of a 2000 W inverter charger. The inverter charger connects to a 300 Ah LiFePO4 house battery through a Class-T fuse.

UPDATED 2026-09-23
TYPESld
USE-CASECampervan Electrical Sld
EXAMPLECampervan shore power inverter charger single line diagram
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CASE ANALYSIS

Scenario

This campervan can run from a 230 V campsite hookup or the inverter, while the inverter charger maintains a 12 V LiFePO4 house battery.

Key decisions

  • Shore protection: A 30 mA Type A RCD and 16 A MCB protect the campsite AC input.
  • AC source selection: A transfer switch selects shore power or inverter output.
  • Battery protection: A Class-T fuse protects the 300 Ah LiFePO4 battery connection.
  • AC loads: Outlets and water heater have individual MCBs.
  • DC loads: Fridge and LED lighting have separate fuses on the 12 V bus.

When to reuse this

Use this for a 12 V campervan that combines campsite hookup with an inverter charger. Final RCD, earthing, cable, and appliance requirements depend on the vehicle and jurisdiction.

FAQ

Frequently asked questions

Why is there a transfer switch?01
It prevents the shore input and inverter output from energizing the AC bus at the same time.
What does the inverter charger do?02
It converts battery DC to AC when off-grid and charges the house battery from shore power.
Why use a Class-T battery fuse?03
It is a high-interrupting-capacity fuse commonly used near high-current battery sources.
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