Wind Turbine FAQs
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Summary Checklist for Your Choice
Choose the SR or ST-1200W if you want portability, low noise, and minimal investment for camping or caravans.
Choose the ST-2000, ST-3000, or ST-5000 if you have a stationary house/cabin and want to supplement solar panels at night.
Choose the ST-10kW — the largest turbine we sell — if you have heavy agricultural power needs, acreage, and a budget for proper mast engineering.
The vertical axis wind turbines listed on the BushLine Outdoor Equipment catalogue are categorised by physical design shapes, which dictate their ideal applications.
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No.Wind turbines generate "wild" 3-phase AC power that changes voltage constantly with the wind speed. Connecting it directly to a battery or a standard solar inverter will instantly destroy your equipment. Youmustwire the turbine into a dedicatedWind/Solar Hybrid MPPT Controller with an integrated Dump Load Resistor. The controller converts the power to stable DC to charge your batteries safely.
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You must match the turbine and its hybrid controller to the exact voltage of your existing battery bank:
- 12V: Best for compact mobile setups like caravans, 4WDs, and camper trailers.
- 24V: Great for medium-sized setups like off-grid sheds, cabins, and motorhomes.
- 48V: The gold standard for full off-grid home systems. Higher voltage means less energy loss through your wires and allows you to use thinner, safer cables.
-
When your battery bank becomes 100% fully charged, it stops accepting power. If a heavy wind storm hits at night when your batteries are full, a turbine with nowhere to send its power will "free-spin" out of control and physically fly apart. A hybrid controller fixes this by automatically diverting that excess power into the dump load resistor, which burns it off safely as heat and acts as an electronic brake to slow the turbine down.
-
No,that is the main benefit of the vertical design. Traditional horizontal "propeller" turbines create a high-pitched, annoying "chopping" noise. Our ST Tulip and Flower series utilise advanced omnidirectional maglev-style bearings, making them virtually silent and completely vibration-free, all you will hear is the wind. They are perfect for suburban blocks, tight caravan parks, and areas close to neighbours.
-
It will turn, but turning is not charging. The blades start rotating at about 1.5 m/s — a light breeze. Charging starts once the wind clears the cut-in speed of about 3.5 m/s, and output climbs from there — the rated figure is measured at 13 m/s (about 47 km/h). A gentle breeze keeps the turbine ticking over; it takes real wind to push real power into your batteries.
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You should connect the wind turbine to a battery bank first, via a dedicated charge controller, rather than directly to an inverter. Connecting a wind turbine directly to a standard inverter will damage the equipment or cause the system to fail.
🔋 The Correct Wiring SequenceTo safely capture and use the power, your setup must follow this exact order:
- Wind Turbine: Generates wild, fluctuating 3-phase AC power as wind speeds change.
- Hybrid/Wind Charge Controller: Converts the unstable AC power into steady DC power. It also protects the turbine from over-speeding by applying an electronic brake during high winds.
- Battery Bank (12V/24V/48V): Acts as a buffer to store the energy. It absorbs sudden power spikes from wind gusts and provides a steady source of energy.
- Off-Grid Inverter: Connects to the battery, converting the stored DC battery power into standard AC power for your household appliances.
⚠️ Why You Cannot Skip the Battery
- Unstable Voltage: Wind speeds change second by second. Without a battery to absorb and smooth out these massive fluctuations, a direct-connect inverter would constantly turn off and error out.
- Turbine Destruction: When a battery is full or disconnected, a wind turbine loses its "load" (resistance). Without that resistance, the blades can spin out of control in high winds and physically destroy the unit. The charge controller uses the battery connection to safely dump excess power and slow the turbine down.
-
Wiring & Installation Requirement:This wind turbine generates 3-phase AC power andcannotbe connected directly to a battery, solar controller, or home inverter. To operate safely, it must run through a dedicatedWind/Solar Hybrid MPPT Controller with an integrated Dump Load Resistor. The dump load prevents the turbine from over-speeding and destroying itself in high winds once your batteries are fully charged.
-
It is almost always one of three common installation issues. Check them in order:
1. Your multimeter is set to DC (the most common mistake).
- The issue: measuring the three turbine wires with the meter set to DC volts.
- The reality: wind turbines generate 3-phase AC power directly from the stator.
- The fix: switch your multimeter to AC volts (V~). Testing these wires on a DC setting gives a false reading near zero.
2. The turbine is stalling because of a short.
- The issue: the blades turn heavily and slowly, or lock up.
- The reality: if any of the three AC output wires touch each other, or the controller’s internal braking diodes have short-circuited, it acts as a magnetic brake — the turbine can never spin fast enough to build voltage.
- The fix: completely disconnect the turbine from the controller. If it suddenly frees up and spins much faster, the problem is a short in the wiring or a faulty controller.
3. Voltage drop from thin cables.
- The issue: thin wire run a long way from the tower to the battery shed.
- The reality: thin solar or automotive cable over a long run (20 metres or more) loses the power as heat in the wire before it reaches the controller.
- The fix: use heavy cable between the mast and the controller on long runs — minimum 8 AWG, ideally 6 AWG.
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Because the number on the box is a peak rating, not a promise. A turbine’s rated output is measured at a specific wind speed — for these models that is 13 m/s, about 47 km/h — and most sites see far less most of the time. Your display shows what the wind is delivering right now, so it will sit well below the rated figure and move second by second with the wind. That is physics, not a fault.
Where these turbines earn their keep is time: they keep charging through the night and through weather that shuts solar down. If the display shows 0 W while the blades are spinning, that is a different issue — see the 0 W question below.
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Not necessarily — this is one of the most common questions we get, and it's rarely a faulty unit. It's usually a quick settings check, or (on a first-time install) how the wiring and start-up sequence were done. See our full Wind Turbine 0W Troubleshooting & Installation Guide for the complete walkthrough, or contact us and we'll help you sort it out.
-
Short answer: wire your bus bar and breakers before and after the controller, then power up in the right order — battery first, then solar, then wind. Getting the sequence right prevents almost all wiring issues, including the common “spinning but 0 W” problem.
Correct installation comes down to isolation and the right sequence:
- Fit a breaker before the controller (turbine/solar side) and after it (battery side), landing on a DC bus bar
- Keep the turbine-to-controller cable run to 2–10 metres to limit voltage drop
- Power up in this order: battery breaker first, then solar, then wind turbine last
See our full How to Install & Start Up guide for the complete step-by-step walkthrough and wiring diagram.
S-400W Horizontal Wind Turbine 12/24/48V
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S-400W Horizontal Wind Turbine 12/24/48V
Keeps the battery topped up while you sleep.
Solar owns the daylight. Then the sun drops, the fridge keeps pulling, the lights go on, and the battery bank spends all night going backwards. By morning you are watching the voltage and wondering whether to start the generator before breakfast.
The S4-400 is our smallest horizontal-axis turbine — 7.5 kg, a 1.35 m rotor, three blades. It starts turning in a 2 m/s breath of wind and begins charging at 3 m/s. It works the hours and the weather that panels cannot: night, winter, and the grey windy fronts that flatten solar output for days at a stretch.
Straight up about the numbers: the 400 W rating is measured at 14 m/s — a 50 km/h blow, not a normal afternoon. On a decent coastal breeze you will see a fraction of that, working around the clock. Think of it as a trickle-charge assist for your solar, not a replacement for it.
What It Actually Makes
| Wind speed | Feels like | Output |
|---|---|---|
| 4 m/s (14 km/h) | Light breeze | 25 W |
| 5 m/s (18 km/h) | Flags start to lift | 48 W |
| 6 m/s (22 km/h) | Steady inland breeze | 72 W |
| 7 m/s (25 km/h) | Decent coastal day | 98 W |
| 8 m/s (29 km/h) | Good working breeze | 128 W |
| 10 m/s (36 km/h) | Windy | 218 W |
| 11 m/s (40 km/h) | Very windy | 270 W |
| 12 m/s (43 km/h) | Very windy | 330 W |
| 14 m/s (50 km/h) | Rated wind speed | 410 W |
That is the manufacturer's own measured curve, and we would rather you saw it before you bought. At a good steady 7 m/s this turbine makes about 98 W — not 400 W.
What It Solves
- The overnight drain: the van fridge pulls amps all night while the panels do nothing. A breeze feeds the bank the whole time you are asleep.
- The grey winter week: the fronts that kill your solar for days are exactly the weather this thing works hardest in.
- The boat on the mooring: keeps the house bank floated between visits, so the bilge pump never meets a flat battery.
- The gear nobody visits: gate cameras, yard lighting, a repeater on a back block — small loads a long way from a powerpoint.
- Less generator time: every hour of breeze is fuel you have not hauled and a service you have not done.
Key Features
- Lightest in the range: 7.5 kg net — one person, one ladder, one afternoon.
- Starts early: turning at 2 m/s, charging from 3 m/s (11 km/h).
- 12V, 24V or 48V: matches the battery bank you already run.
- Built to survive 45 m/s: that is 162 km/h. If your site sees worse than that, this is the wrong machine for it and we would rather say so.
- Three-blade rotor, 1.35 m: reinforced nylon-fibre blades on a die-cast aluminium body, IP54 generator.
- Permanent magnet generator: 3-phase AC synchronous with NdFeB magnets — no brushes to wear, no exciter current to waste.
- Two layers of protection: electromagnetic brake for overspeed, controller over-current protection plus dump load for overload.
- Two controller choices: the HECR wind-solar hybrid (runs panels too) or the pure-wind WCMD MPPT — pick either as a kit, or take the turbine only.
Kit, Or Turbine Only
The kit pairs the turbine with the manufacturer's matched hybrid controller for your voltage — LHECR0512 on 12V, LHECR0824 on 24V, LHECR1248 on 48V — plus the dump-load resistor. The hybrid part matters: wind charges through MPPT, and the same box takes a solar array on a PWM input (up to 600 W of PV on the 12V unit, 1000 W on the 24V, 1200 W on the 48V). One controller runs both, which is how most people end up wiring these anyway.
Never going to run solar? Pick With Pure-Wind Controller and the kit ships the manufacturer's pure-wind MPPT unit instead — LWCMD400W-12V on 12V, LWCMD800W-24V on 24V, LWCMD1000W-48V on 48V. Wind only, no PV input at all — full details in the Specs tab.
Already have a controller rated for this turbine? Pick Turbine only.
What Else You'll Need
A turbine on a pole is half a system. The other half is a mast in clean air, cable sized for the run, breakers and an isolator, a dump load (included with the kit controller) and a battery bank to feed. Cable sizing depends on run length, voltage and current — that is your electrician's call, not a line on a product page. Browse bus bars, breakers and wiring in the Electrical Supplies collection, and the full controller range here.
Representative photos: the manufacturer supplies one set of photographs per turbine family, not per model. The S4-400 you receive is this design, at the sizes in the spec table.
Q & A
Will it really make 400 watts?
At 14 m/s — a 50 km/h blow — yes, and the manufacturer's curve shows it. On a typical usable breeze of 5 to 8 m/s you will see roughly 50 to 130 W, all day and all night. Size your expectations off the output table above, not the number in the title.
Does the kit controller take solar panels?
Yes. The HECR series is a wind-solar hybrid: the turbine charges through MPPT and a solar array connects to the same unit on a PWM input — up to 600 W of PV on the 12V model, 1000 W on the 24V, 1200 W on the 48V. Never running panels? The pure-wind WCMD controllers are on this page too — pick With Pure-Wind Controller; they have no PV input at all.
Why don't you publish a charging current in amps?
Because the supplier has not published one, and we will not calculate one by dividing watts by volts — that is how people end up sizing breakers off a guess. Do not size cable or breakers from the wattage in any product title. When the manufacturer gives us the amp figure, it goes in the table.
Is the cable from the turbine AC or DC?
AC. The turbine generates 3-phase AC, and the rectifier inside the controller converts it to DC to charge the battery. A generator is not a battery: the voltage on that cable rises with rotor speed, which is exactly why the matched controller is built to take far more than the nominal battery voltage on its input. Cable selection and protection are your electrician's job.
Can I mount it on the roof?
Yes — 3 to 6 m above the roofline, or 6 to 10 m on a ground mast. Height is output: turbulence near buildings eats the wind before the blades see it, so the extra metres of clean air pay for themselves.
What happens to it in a storm?
The electromagnetic brake and the controller's overspeed protection wind it back, and the machine is built to survive 45 m/s (162 km/h). If your site regularly sees more than that, do not put this turbine on it.
What is the warranty position?
Twelve months. Professional installation by a licensed electrician is a condition of it — keep the electrician's invoice with your paperwork. Be aware the manufacturer treats blade damage from consistently extreme wind, and motor burnout after prolonged high-speed running, as case-by-case assessments rather than automatic cover.
How long until it arrives?
Built to order — allow 6 to 8 weeks. Delivery is free to Australia and New Zealand. The kit arrives as two boxes: the turbine, and the controller with its dump load.
Specs
| Specification | Detail |
|---|---|
| Rated power | 400 W at 14 m/s (50.4 km/h) |
| Maximum power output | 411 W |
| Rated voltage | 12 V / 24 V / 48 V |
| Maximum voltage output | 13.2 / 26.4 / 52.8 V |
| Start-up wind speed | 2 m/s (7.2 km/h) |
| Cut-in wind speed | 3 m/s (10.8 km/h) |
| Rated wind speed | 14 m/s (50.4 km/h) |
| Survival / safe wind speed | Up to 45 m/s (162 km/h) |
| Rotor diameter | 1.35 m (1350 mm) |
| Blade length | 650 mm |
| Number of blades | 3 |
| Blade material | Reinforced nylon fibre |
| Body material | Reinforced die-cast aluminium |
| Magnet material | NdFeB |
| Generator type | 3-phase AC permanent magnet synchronous generator |
| Over-speed protection | Electromagnetic brake |
| Overload protection | Controller over-current protection + dump load |
| Wind direction adjustment | Auto yaw |
| Generator protection grade | IP54 |
| Working temperature | -20°C to +50°C |
| Working humidity | 0-90% RH (non-condensing) |
| Mount height | Ground: 6-10 m; rooftop: 3-6 m above the roofline |
| Design life | 20+ years |
| Warranty | 1 year |
| Colour | White |
| Net weight | 7.5 kg |
| Gross weight | 9.5 kg |
| Packing size | 670 × 280 × 210 mm |
The Kit Controller
| Specification | LHECR0512 (12V kit) | LHECR0824 (24V kit) | LHECR1248 (48V kit) |
|---|---|---|---|
| Controller type | Wind-solar hybrid (wind MPPT + PV PWM) | ||
| Rated wind power | Up to 500 W | Up to 800 W | Up to 800 W |
| Rated PV power | Up to 600 W total system | Up to 1000 W total system | Up to 1200 W total system |
| Battery voltage | 12 V | 24 V | 48 V |
| Max wind input voltage | 80 V | ||
| Max PV input voltage | 55 V | 55 V | 95 V |
| Maximum battery charging current | Not specified by supplier — do not size cable or breakers from the wattage in the product title | ||
| Wind protection | Reverse-current, over-voltage, over-current, over-speed and manual dump | ||
| Display | LCD | ||
| Communications | Bluetooth built in | ||
| Installation | Wall-mounted, natural cooling | ||
| Controller size | 162 × 145 × 61.8 mm | ||
| Net weight | 1.9 kg | ||
Wire the system this way — follow this diagram, not the drawing in the supplier datasheet:
The Pure-Wind Controller Option
| Specification | LWCMD400W-12V (12V kit) | LWCMD800W-24V (24V kit) | LWCMD1000W-48V (48V kit) |
|---|---|---|---|
| Controller type | Pure-wind MPPT (no PV input at all) | ||
| Battery voltage | 12 V | 24 V | 48 V |
| Max wind power | 400 W | 800 W | 1000 W |
| Max wind input voltage | 80 V | 80 V | 180 V |
| Wind charging method | Boost / buck / boost-buck MPPT | ||
| Unloading | External unloading — dump-load resistor included with the controller; an enclosed resistance box is available as an optional extra | ||
| Load output | None | ||
| Protection | Over-voltage, over-current, reverse connection, over-speed and dump-load protection | ||
| Display | Built-in LCD | ||
| Working temperature | -20°C to +55°C | ||
| Static loss | 1.8 W or less | ||
| Warranty | 1 year | ||
| Maximum battery charging current | Not specified by supplier — do not size cable or breakers from the wattage in the product title | ||
The pure-wind kit wires this way — wind only, no solar input:
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Wind Turbine FAQs
-
Summary Checklist for Your Choice
Choose the SR or ST-1200W if you want portability, low noise, and minimal investment for camping or caravans.
Choose the ST-2000, ST-3000, or ST-5000 if you have a stationary house/cabin and want to supplement solar panels at night.
Choose the ST-10kW — the largest turbine we sell — if you have heavy agricultural power needs, acreage, and a budget for proper mast engineering.
The vertical axis wind turbines listed on the BushLine Outdoor Equipment catalogue are categorised by physical design shapes, which dictate their ideal applications.
-
No.Wind turbines generate "wild" 3-phase AC power that changes voltage constantly with the wind speed. Connecting it directly to a battery or a standard solar inverter will instantly destroy your equipment. Youmustwire the turbine into a dedicatedWind/Solar Hybrid MPPT Controller with an integrated Dump Load Resistor. The controller converts the power to stable DC to charge your batteries safely.
-
You must match the turbine and its hybrid controller to the exact voltage of your existing battery bank:
- 12V: Best for compact mobile setups like caravans, 4WDs, and camper trailers.
- 24V: Great for medium-sized setups like off-grid sheds, cabins, and motorhomes.
- 48V: The gold standard for full off-grid home systems. Higher voltage means less energy loss through your wires and allows you to use thinner, safer cables.
-
When your battery bank becomes 100% fully charged, it stops accepting power. If a heavy wind storm hits at night when your batteries are full, a turbine with nowhere to send its power will "free-spin" out of control and physically fly apart. A hybrid controller fixes this by automatically diverting that excess power into the dump load resistor, which burns it off safely as heat and acts as an electronic brake to slow the turbine down.
-
No,that is the main benefit of the vertical design. Traditional horizontal "propeller" turbines create a high-pitched, annoying "chopping" noise. Our ST Tulip and Flower series utilise advanced omnidirectional maglev-style bearings, making them virtually silent and completely vibration-free, all you will hear is the wind. They are perfect for suburban blocks, tight caravan parks, and areas close to neighbours.
-
It will turn, but turning is not charging. The blades start rotating at about 1.5 m/s — a light breeze. Charging starts once the wind clears the cut-in speed of about 3.5 m/s, and output climbs from there — the rated figure is measured at 13 m/s (about 47 km/h). A gentle breeze keeps the turbine ticking over; it takes real wind to push real power into your batteries.
-
You should connect the wind turbine to a battery bank first, via a dedicated charge controller, rather than directly to an inverter. Connecting a wind turbine directly to a standard inverter will damage the equipment or cause the system to fail.
🔋 The Correct Wiring SequenceTo safely capture and use the power, your setup must follow this exact order:
- Wind Turbine: Generates wild, fluctuating 3-phase AC power as wind speeds change.
- Hybrid/Wind Charge Controller: Converts the unstable AC power into steady DC power. It also protects the turbine from over-speeding by applying an electronic brake during high winds.
- Battery Bank (12V/24V/48V): Acts as a buffer to store the energy. It absorbs sudden power spikes from wind gusts and provides a steady source of energy.
- Off-Grid Inverter: Connects to the battery, converting the stored DC battery power into standard AC power for your household appliances.
⚠️ Why You Cannot Skip the Battery
- Unstable Voltage: Wind speeds change second by second. Without a battery to absorb and smooth out these massive fluctuations, a direct-connect inverter would constantly turn off and error out.
- Turbine Destruction: When a battery is full or disconnected, a wind turbine loses its "load" (resistance). Without that resistance, the blades can spin out of control in high winds and physically destroy the unit. The charge controller uses the battery connection to safely dump excess power and slow the turbine down.
-
Wiring & Installation Requirement:This wind turbine generates 3-phase AC power andcannotbe connected directly to a battery, solar controller, or home inverter. To operate safely, it must run through a dedicatedWind/Solar Hybrid MPPT Controller with an integrated Dump Load Resistor. The dump load prevents the turbine from over-speeding and destroying itself in high winds once your batteries are fully charged.
-
It is almost always one of three common installation issues. Check them in order:
1. Your multimeter is set to DC (the most common mistake).
- The issue: measuring the three turbine wires with the meter set to DC volts.
- The reality: wind turbines generate 3-phase AC power directly from the stator.
- The fix: switch your multimeter to AC volts (V~). Testing these wires on a DC setting gives a false reading near zero.
2. The turbine is stalling because of a short.
- The issue: the blades turn heavily and slowly, or lock up.
- The reality: if any of the three AC output wires touch each other, or the controller’s internal braking diodes have short-circuited, it acts as a magnetic brake — the turbine can never spin fast enough to build voltage.
- The fix: completely disconnect the turbine from the controller. If it suddenly frees up and spins much faster, the problem is a short in the wiring or a faulty controller.
3. Voltage drop from thin cables.
- The issue: thin wire run a long way from the tower to the battery shed.
- The reality: thin solar or automotive cable over a long run (20 metres or more) loses the power as heat in the wire before it reaches the controller.
- The fix: use heavy cable between the mast and the controller on long runs — minimum 8 AWG, ideally 6 AWG.
-
Because the number on the box is a peak rating, not a promise. A turbine’s rated output is measured at a specific wind speed — for these models that is 13 m/s, about 47 km/h — and most sites see far less most of the time. Your display shows what the wind is delivering right now, so it will sit well below the rated figure and move second by second with the wind. That is physics, not a fault.
Where these turbines earn their keep is time: they keep charging through the night and through weather that shuts solar down. If the display shows 0 W while the blades are spinning, that is a different issue — see the 0 W question below.
-
Not necessarily — this is one of the most common questions we get, and it's rarely a faulty unit. It's usually a quick settings check, or (on a first-time install) how the wiring and start-up sequence were done. See our full Wind Turbine 0W Troubleshooting & Installation Guide for the complete walkthrough, or contact us and we'll help you sort it out.
-
Short answer: wire your bus bar and breakers before and after the controller, then power up in the right order — battery first, then solar, then wind. Getting the sequence right prevents almost all wiring issues, including the common “spinning but 0 W” problem.
Correct installation comes down to isolation and the right sequence:
- Fit a breaker before the controller (turbine/solar side) and after it (battery side), landing on a DC bus bar
- Keep the turbine-to-controller cable run to 2–10 metres to limit voltage drop
- Power up in this order: battery breaker first, then solar, then wind turbine last
See our full How to Install & Start Up guide for the complete step-by-step walkthrough and wiring diagram.
