| Operating Voltage | Match the strip voltage with the output voltage of the power supply and controller. | Common low-voltage options are 12 V DC and 24 V DC. A 24 V strip generally carries the same power with approximately half the current of a 12 V strip. | The power supply, dimmer, RGB controller, and LED strip must use the same nominal voltage. Do not connect a 12 V strip directly to a 24 V output. | Use 24 V for longer runs when the selected strip and control equipment support it. |
| Total Power Load | Calculate the complete load from the strip length and rated power per metre. | Total power = strip length × rated watts per metre. Example: 8 m × 14.4 W/m = 115.2 W. | The power supply should provide the correct voltage and normally have at least 20% headroom above the calculated load. | For a 115.2 W load, select a supply rated for at least about 138 W, provided the voltage matches. |
| Output Current | Confirm that the power supply and controller can deliver the required current. | Current = total power ÷ operating voltage. A 115.2 W, 24 V system requires approximately 4.8 A. | The controller's continuous current rating must meet or exceed the strip's total current. For RGB or RGBW systems, check both total and per-channel ratings. | Allow additional capacity for startup conditions, wiring losses, and future expansion. |
| Strip Type and Channels | Identify whether the strip is single-color, tunable white, RGB, RGBW, or individually addressable. | Single-color strips commonly use two conductors. Tunable white and RGB systems require separate control channels. Addressable strips require data, power, and compatible signal timing. | A single-color dimmer cannot control RGB, RGBW, or addressable strips. Addressable strips need a controller that supports the strip's data protocol. | Choose the controller type before selecting connectors and aluminum profiles. |
| Dimming and Control Method | Select the control method required for the installation. | Common methods include PWM dimming, wall-panel control, radio control, wired control, and building-automation interfaces. | The controller must accept the intended input signal and provide the correct output voltage, channel count, and current capacity. | For low-voltage LED strips, use a compatible constant-voltage controller rather than a constant-current LED driver. |
| Power Supply Type | Verify that the supply is designed for constant-voltage LED loads. | The output voltage must remain within the LED strip's specified operating range. Input voltage, enclosure rating, cooling method, and electrical protections should also be checked. | The supply must be compatible with the installation environment and the controller's input requirements. Dimmable supplies require matching control interfaces. | Use a ventilated supply for higher loads and keep the supply accessible for inspection and replacement. |
| Voltage Drop and Run Length | Consider strip length, copper conductor size, power density, and injection points. | Voltage drop increases with current and cable length. It can cause reduced brightness or color variation, especially on high-power and long installations. | The controller may be correctly rated while the far end of the strip still receives insufficient voltage because of wiring losses. | Use shorter sections, thicker supply wires, parallel feeds, or power injection at multiple points when required. |
| Aluminum Profile and Heat Management | Select a profile with adequate internal space, thermal contact, diffuser compatibility, and mounting strength. | Aluminum helps transfer heat away from the LED strip. Higher wattage per metre generally requires more effective thermal management. | The profile does not replace a correctly sized power supply or controller. Ensure the diffuser and profile dimensions match the strip width. | Bond the strip firmly to a clean aluminum surface and avoid tightly enclosing high-power strips without heat dissipation. |
| Ingress Protection | Match the strip and accessories to the installation environment. | Indoor dry locations may use non-sealed construction. Damp or outdoor locations require suitable protection for the strip, connectors, power supply, and cable joints. | The power supply and controller must have suitable environmental protection; an outdoor-rated strip alone does not protect the complete system. | Seal cable entries and connectors where moisture, dust, or direct water exposure is possible. |
| Color and Light Quality | Check color temperature, color rendering, brightness, and consistency requirements. | White strips are specified by color temperature, such as warm white or neutral white. Color-rendering performance is commonly expressed using CRI. | Tunable-white strips require a multi-channel controller. RGB and RGBW strips require controllers with matching channel outputs. | Select the light color and rendering performance according to the application, not only by wattage. |
| Wiring and Connectors | Confirm conductor count, polarity, wire gauge, connector size, and current rating. | Single-color systems typically require two conductors; RGB systems require additional channel conductors. Wire capacity depends on current, length, and installation conditions. | Connectors must match the strip width, channel arrangement, voltage, and current. Observe polarity and channel order during installation. | For higher-current or permanent installations, soldered connections with strain relief are often more reliable than small clip connectors. |
| System Testing | Test the complete assembly before final installation. | Check voltage at the power supply and at the far end of the strip under load. Verify brightness, color uniformity, dimming range, and controller response. | Testing confirms that the strip, wiring, power supply, controller, connectors, and profile operate as one compatible system. | Inspect for excessive heat, flicker, unstable colors, loose terminals, and unexpected voltage loss before closing the profile. |