By Dave Miller · off-grid sparky · 22 years wiring solar, batteries and sheds in central QLD
“After losing my first pump to a 40-metre dry run in the 2022 heatwave, I learned that a pressure sensor is non-negotiable for central QLD solar.”
— Dave. Measure twice, buy once.
ArticlesCalculatorsSite PlannerShopInstall a solar submersible pump in Australia? You need to know the depth, wiring, and controller setup. Here's how to do it right—no fluff, no nonsense.
Install a solar submersible pump in Australia? You need to know the depth, wiring, and controller setup. Here's how to do it right—no fluff, no nonsense.
Submersible pumps work best when submerged 3–10m deep. Go deeper than 15m and you'll need a high-head model. Check the pump's max depth rating. Use a weighted rope to lower it slowly—don't drop it. Bunnings sells 50m nylon rope for $12.95.
Use 4mm² copper cable for 10m runs. Longer runs need 6mm². Always use a waterproof junction box. Jaycar has 4mm² cable for $8.95. Don't skimp on the cable—corrosion kills pumps fast.
Pair your pump with a MPPT charge controller. Set the voltage to match your solar array. Use a 12V or 24V system depending on your needs. Amazon Australia has the Victron SmartSolar 150/35 for $299.99 (affiliate link: Victron SmartSolar 150/35).
| Model | Pump Capacity (L/hr) | Max Depth (m) | Price (AUD) | Supplier |
|---|---|---|---|---|
| Watterott 1500 | 1500 | 15 | 399.95 | Bunnings |
| Hayward 2000 | 2000 | 20 | 599.95 | Jaycar |
| Orion 3000 | 3000 | 30 | 899.95 | Amazon |
All pumps must comply with AS/NZS 3000 for electrical safety. Check the label. Use a licensed electrician for anything over 10m depth. No exceptions. No excuses.
Worth a watch: Solar Bore Pump Replacement INSTALL | Off-grid Homestead · ROCKPILE Off-Grid Homestead
While many off-grid projects are achievable as DIY, certain situations require licensed professionals:
Always check local regulations and obtain necessary permits before commencing work.