A pure sine wave inverter lets you use 240V AC appliances (like kettles, microwaves, TVs, or laptops) in your caravan, powered by your 12V or 24V battery system. This guide covers selecting the right inverter, installing it safely, and ensuring reliable off-grid power.
? What You’ll Need
Pure sine wave inverter (sized for your AC loads)
12V deep cycle battery (AGM or lithium)
Heavy-duty battery cables (rated for high current)
Inline fuse or circuit breaker (based on inverter wattage)
Battery isolator switch (optional but recommended)
Terminal lugs or crimp connectors
Mounting screws or brackets
Remote on/off switch or monitor (if supported)
Multimeter, screwdriver, wire cutters, and safety gear
⚠️ Safety Precautions
Disconnect all power before starting.
Use appropriately rated cables and fuses.
Never place the inverter near flammable materials.
Keep the inverter away from water and ensure proper ventilation.
? Step-by-Step Installation Guide
1. Choose a Suitable Mounting Location
Dry, cool, and well-ventilated area
As close as possible to the battery (shorter cables = less voltage drop)
Away from flammable materials and moisture
Avoid sealed compartments—heat must escape
2. Secure the Inverter
Mount the inverter to a solid surface using screws or brackets.
Leave at least 5–10 cm clearance around the unit for ventilation.
3. Connect to the Battery
Always connect the battery before connecting AC loads.
Connect the positive (+) cable from the battery to the inverter's positive terminal.
Insert an inline fuse or circuit breaker within 30 cm of the battery terminal.
Connect the negative (–) cable to the inverter’s negative terminal and then to the battery.
Tighten all connections securely and insulate them where needed.
4. Connect AC Appliances
Plug appliances directly into the inverter outlets OR
Hardwire to a dedicated AC circuit using a transfer switch (must be done by a licensed electrician)
5. Optional: Install a Remote Switch
Some inverters come with a remote on/off switch or monitor panel.
Mount it inside the caravan and connect using the included cable.
6. Test the System
Switch on the inverter.
Use a multimeter to confirm AC output (approx. 230V for AU/NZ/UK or 120V for US/CA).
Plug in a small appliance to test function.
? Tips for Long-Term Use
Only run appliances that your inverter can handle (check wattage).
Don’t run high-load items (e.g., kettles or air conditioners) unless the inverter is large enough.
Monitor battery voltage to prevent deep discharge.
Turn off the inverter when not in use to conserve power.
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