Wind Turbine FAQs
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Start with two questions: how much wind does your site actually get, and how much room do you have.
Vertical turbines (X-300, T-500W, and the H12 and HPRO series) start turning in about 2 m/s and take wind from any direction, so they suit rooftops, suburban blocks and anywhere the wind swirls and shifts. They run from 300 W up to 2000 W.
Horizontal turbines (S-400W, M-600W, M-800W, and the L1, L2 and G series) want cleaner, steadier wind and a clear run at it. They scale further — 400 W up to 5000 W — and most of them survive heavier weather.
Match the turbine to your battery bank, not to the biggest number. 12 V suits a camper, 4WD or tinnie; 24 V a van, cabin or boat; 48 V a shed or remote block. The largest models run at 220 V, and the L2-3000, G-3000 and G-5000 are ground-mount only — they need a 10–15 m mast and are not rooftop units.
Rated power is measured at 10–12 m/s. What you get at your place depends on your wind, your mast height and the season — not on a number on our website.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
L2-2500 Horizontal Wind Turbine — 2500W at 11 m/s, 240V
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L2-2500 Horizontal Wind Turbine — 2500W at 11 m/s, 240V
Built for the mast that's a long way from the shed.
The best wind on a property is rarely next to the battery shed. It is up on the rise, past the tanks, where a low-voltage turbine loses a painful slice of its output in the cable before a single watt reaches the bank — or costs a fortune in copper thick enough not to.
The L2-2500 solves that the sensible way: it generates at 220 V. Higher voltage means less current in the cable for the same power, so the run from a remote mast stops being the weak point of the system. Its matched controller then steps that down to charge a 48 V battery bank. The machine itself is a serious unit — 85 kg, a 3.8 m rotor on three reinforced FRP blades, turning at 2 m/s and charging from 3 m/s.
Straight up about the numbers: the 2,500 W rating is measured at 11 m/s — a 40 km/h blow, not a normal afternoon. On a decent breeze you will see a fraction of that, working around the clock. The manufacturer's own curve reads 2,450 W at the rated speed and peaks at 2,600 W at 12 m/s — close to the nameplate, and published below so you can size the system off real figures.
What It Actually Makes
| Wind speed | Feels like | Output |
|---|---|---|
| 4 m/s (14 km/h) | Light breeze | 100 W |
| 5 m/s (18 km/h) | Flags start to lift | 219 W |
| 6 m/s (22 km/h) | Steady inland breeze | 395 W |
| 7 m/s (25 km/h) | Decent coastal day | 640 W |
| 8 m/s (29 km/h) | Good working breeze | 950 W |
| 9 m/s (32 km/h) | Fresh breeze | 1,339 W |
| 10 m/s (36 km/h) | Windy | 1,950 W |
| 11 m/s (40 km/h) | Rated wind speed | 2,450 W |
| 12 m/s (43 km/h) | Very windy — curve peak | 2,600 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 640 W — not 2,500 W. Around the clock that is real energy.
What It Solves
- The long cable run: 220 V generation means far less current in the wire for the same power — the mast can go where the wind is, not where the shed is.
- The property-sized overnight drain: pumps, freezers and cameras pull amps all night while the panels do nothing. A working breeze feeds the bank the whole time you are asleep.
- The grey winter fortnight: the fronts that flatten solar for days are exactly the weather this machine works hardest in.
- The remote site: farms, telecom installations and outstations where every generator hour means carting fuel down a long track.
- Less generator time: every windy day is litres of diesel you have not hauled and a service you have not done.
Key Features
- 220 V generation: holds its output over long cable runs from a remote mast; the matched controller steps it down to a 48 V battery bank.
- 3.8 m rotor, three blades: reinforced FRP blades on a reinforced die-cast aluminium body.
- Starts early: turning at 2 m/s, charging from 3 m/s (11 km/h).
- Built to survive 50 m/s: that is 180 km/h. If your site regularly sees worse, this is the wrong machine for it and we would rather say so.
- Permanent magnet generator: 3-phase AC synchronous with NdFeB magnets — no brushes to wear, no exciter current to waste. IP54 protected.
- Two layers of protection: electromagnetic brake for overspeed, controller over-current protection plus dump load for overload.
- Roof or ground mount: 3–6 m above the roofline, or 6–10 m on a ground mast — and at 85 kg, have someone competent confirm the structure first.
- Wind-only by design: the matched WW30 controller is a pure-wind MPPT unit — there is no hybrid option for this model, and we say so rather than blur it.
Kit, Or Turbine Only
The kit pairs the turbine with the manufacturer's matched controller, the WW30-48-240 — a pure-wind MPPT unit that takes the turbine's 220 V output and steps it down to charge a 48 V battery bank, with its dump-load resistor box included. Its maximum output current is properly published: 63 A. It has no solar input at all, and the manufacturer lists no wind-solar hybrid controller for this model — if you want panels in the same system, they will need their own solar controller alongside, or look at the L2-2000, which does have a hybrid option.
Already have a controller rated for a 2.5 kW turbine with a 220 V wind input? 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 L2-2500 you receive is this design, at the sizes in the spec table.
Q & A
Will it really make 2,500 watts?
At the rated 11 m/s — a 40 km/h blow — the manufacturer's curve reads 2,450 W, and it peaks at 2,600 W at 12 m/s. That is about as honest as nameplate ratings get. On a typical usable breeze of 5 to 8 m/s you will see roughly 220 to 950 W, all day and all night. Work out what you will actually get from the output table above, not from the number in the product name.
Why is a 220 V turbine charging a 48 V battery bank?
Because the voltage in the cable is doing the travelling, not the battery. Generating at 220 V keeps the current low over a long run, then the WW30-48-240 steps it down at the battery end — it is a step-down MPPT unit with a 280 Vdc rated input and a 48 Vdc battery output. That pairing is the manufacturer's own recommendation for this model.
Can I add solar panels to the kit controller?
No. The WW30-48-240 is pure-wind MPPT with no PV input at all, and the manufacturer lists no hybrid controller for the L2-2500. If solar is central to your plan, run the panels on their own solar controller into the same battery bank, or consider the L2-2000, which offers a wind-solar hybrid kit. We would rather tell you that now than have you find out at the wiring stage.
What charging current should I size the cable and breakers for?
The controller's own datasheet prints a 63 A maximum output current on the battery side, and 13 A rated input current on the 220 V wind side — they are different sides of the converter and must never be mixed up. Do not size anything from the wattage in the product title, and put the final numbers in your electrician's hands.
Is the cable from the turbine AC or DC?
AC. The turbine generates 3-phase AC rated at 220 V, rising with rotor speed to a maximum of 242 V, and the rectifier inside the controller converts it to DC. This is genuinely not a DIY voltage — cable selection, isolation and protection on this machine are a licensed electrician's job, full stop.
Can I mount it on the roof?
The manufacturer allows it: 3 to 6 m above the roofline, or 6 to 10 m on a ground mast. This is an 85 kg machine with a 3.8 m rotor, so have someone competent confirm the structure before it goes up. More height in clean air means more output — turbulence near buildings eats the wind before the blades see it.
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 50 m/s (180 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 and sea-freighted — allow 6 to 8 weeks. Freight is quoted per order — this is a sea-freight machine and the cost depends on your delivery address. Email us before you order and we will confirm it. The turbine arrives as three packages (the longest is 1.85 m); the kit controller ships separately in a wooden crate.
Specs
| Specification | Detail | ||
|---|---|---|---|
| Rated power | 2,500 W at 11 m/s (39.6 km/h) | ||
| Maximum power output | 2,600 W | ||
| Rated voltage | 220 V | ||
| Maximum voltage output | 242 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 | 11 m/s (39.6 km/h) | ||
| Survival / safe wind speed | Up to 50 m/s (180 km/h) | ||
| Wind wheel / rotor diameter | 3.8 m (3800 mm) | ||
| Blade length | 1.80 m (1800 mm) | ||
| Number of blades | 3 | ||
| Blade material | Reinforced FRP | ||
| 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 | 85 kg | ||
| Gross weight | 100 kg | ||
| Packing | 3 packages: 750 × 370 × 370 mm + 1850 × 230 × 320 mm + 740 × 520 × 50 mm | ||
| Certification | CE marked to the Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU and Machinery Directive 2006/42/EC. Tested to EN 61400-2 (small wind turbines), EN ISO 12100 and EN 60204-1. CE is a European mark and carries no legal standing in Australia. | ||
The Kit Controller — WW30-48-240
| Specification | WW30-48-240 |
|---|---|
| Controller type | Pure-wind MPPT (no PV input at all), step-down |
| Rated input power | 3 kW |
| Rated input voltage | 280 Vdc |
| Wind input voltage range | 60–320 Vdc; cut-in voltage factory setting 60 Vdc, adjustable |
| Rated input current | 13 A (wind side) |
| Maximum output current | 63 A (battery side — printed by the manufacturer for this exact model) |
| Battery voltage | 48 Vdc |
| Over-current brake | 15 A factory setting; adjustable 0–15 A; full dump and recovery after 10 min |
| Over-voltage brake | 320 Vdc factory setting; adjustable 220–320 Vdc |
| Manual brake | Press and hold for 5 s to fully dump; manual recovery required |
| Unloading | Separate dump-load resistor box, included |
| Display | LCD |
| Communications | RS485 built in; optional RS232 / RJ45 / GPRS / Bluetooth / Zigbee |
| Lightning protection | Yes |
| Efficiency | 92% or better |
| Static loss | Under 5 W |
| Working temperature | -20°C to +40°C |
| Cooling / installation | Natural cooling, wall-mounted, IP42 |
| Controller size / weight | 360 × 440 × 195 mm, 15.5 kg |
| Dump load box | 400 × 390 × 210 mm, 13 kg |
| Warranty | 1 year |
| Packing | 1 wooden crate, 540 × 490 × 565 mm, 38.6 kg gross |
Watch Me
Manufacturer footage of the L-series horizontal-axis design this model belongs to.
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Wind Turbine FAQs
-
Start with two questions: how much wind does your site actually get, and how much room do you have.
Vertical turbines (X-300, T-500W, and the H12 and HPRO series) start turning in about 2 m/s and take wind from any direction, so they suit rooftops, suburban blocks and anywhere the wind swirls and shifts. They run from 300 W up to 2000 W.
Horizontal turbines (S-400W, M-600W, M-800W, and the L1, L2 and G series) want cleaner, steadier wind and a clear run at it. They scale further — 400 W up to 5000 W — and most of them survive heavier weather.
Match the turbine to your battery bank, not to the biggest number. 12 V suits a camper, 4WD or tinnie; 24 V a van, cabin or boat; 48 V a shed or remote block. The largest models run at 220 V, and the L2-3000, G-3000 and G-5000 are ground-mount only — they need a 10–15 m mast and are not rooftop units.
Rated power is measured at 10–12 m/s. What you get at your place depends on your wind, your mast height and the season — not on a number on our website.
-
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.
