Load
Fiamma Turbo-Vent wiring diagram
Standard Turbo-Vent roof fan with Polar Control, rated 0.3–3 A (±10%) at 12 V and 36 W. Supplied wires are 1 mm² and the manual identifies an internal 5 A self-resetting fuse. Close the rooflight before travel; fan speed and thermostat setting change energy use.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- Rated power
- 36 W
Wiring diagram
How the Turbo-Vent is wired.
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
Cable sizing for this example
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
10 ft one way
12 V system
- Wire
- 16 AWG · 1.5 mm²
- Example fuse
- 5 A
- Design current
- 3 A
- Voltage drop
- 1.8%
Sized against ABYC E-11. The design current is the part's continuous draw. The length is one way; voltage drop includes an equal-length return.
Run-length and manufacturer assumptions
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
Supporting parts
- 20 ft total of 16 AWG (1.5 mm²) marine cable
- Terminations for 16 AWG cable, matched to the equipment's screw terminals, leads or studs
- 5 A fuse and holder on the positive run
- Heat-shrink, strain relief and terminal boots sized to the cable
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. E0_IS_98690-580_revAC — Turbo-Vent / Turbo-Vent P3), checked 2026-10-01. Manufacturer documentation →
Which Turbo-Vent is represented?
This entry covers the standard Turbo-Vent with Polar Control, not a Turbo-Vent Premium. The manufacturer manual, pages 4–5, gives 12 V nominal, 8–16 V operating range, 0.3–3 A ±10% and 36 W. The catalog's 3 A load is the published upper nominal operating current; its 3.3 A terminal envelope includes the stated tolerance. Actual energy use depends on speed and thermostat cycling.
What does the electrical connection need?
Connect red to positive and black to return using the correct wiring arrangement for the supplied version. The connection drawings, pages 10–11, distinguish the controls. The technical data identifies 1 mm² supplied cable and an internal 5 A self-resetting fuse. That internal device is not a specification for the vehicle's external branch fuse. Protect the installation's supply cable according to its route and rating; do not infer operating current from the 5 A protection value.
What needs checking before cutting the roof?
The installation instructions, page 6 onward, show a 39 cm square opening and a roof thickness of 30–85 mm. Check those dimensions against the supplied frame and roof structure before cutting. Orient the hinges toward the front of the vehicle, use the specified sealing material and fastening pattern, and keep wiring out of moving or pinched areas. Check the sealed roof joint after installation.
How should the fan be used and maintained?
Use the direction and speed controls for intake or extraction, with Polar Control setting the temperature response. Stop the fan before reaching near the blades. The use and maintenance guidance, page 15, requires the rooflight to be closed before travel and prohibits opening it while moving. Inspect the cover, seals and fixings regularly; use mild cleaning products rather than abrasive or aggressive solvents. A fan that slows or stops should be checked for obstruction, supply voltage and control setting before assuming motor failure.
Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
Standard Turbo-Vent roof fan with Polar Control, rated 0.3–3 A (±10%) at 12 V and 36 W. Supplied wires are 1 mm² and the manual identifies an internal 5 A self-resetting fuse. Close the rooflight before travel; fan speed and thermostat setting change energy use.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- Rated power
- 36 W
- Continuous draw
- 3 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+
positive · input
−
negative · input
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Example sizing. Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. Results use the example current and run length shown above. Set your actual equipment, lengths and installation conditions in Crimp before choosing hardware.
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