Work from sections, not purchased reels
The following is a hypothetical 24V example, not a rating or run-length approval for a BEXLIGHTING model.
| Branch | Length | Assumed strip rating | Calculated load |
|---|---|---|---|
| A | 2.0 m | 9.6 W/m | 19.2 W |
| B | 1.5 m | 9.6 W/m | 14.4 W |
| C | 1.0 m | 9.6 W/m | 9.6 W |
| Total | 4.5 m | — | 43.2 W |
At 24V, nominal total current from this simplified load calculation is 43.2 ÷ 24 = 1.8 A. The branch currents would be 0.8 A, 0.6 A and 0.4 A respectively. These figures help review distribution and controller loading; they do not size a cable or protective device by themselves.
What margin means
If a designer deliberately chooses an 80% utilisation planning assumption, 43.2 ÷ 0.8 = 54 W is the resulting nameplate starting point. A nominal 60W supply is therefore a candidate for review, not automatically an approved choice. Check output capability at the expected ambient temperature, enclosure, mounting orientation and input conditions. Apply the actual equipment instructions.
Also include controller consumption or other connected loads where applicable. For adjustable-white products, confirm the maximum simultaneous channel load rather than guessing it from a single-channel measurement.
Voltage, power and interfaces are separate checks
A 24V strip requiring a constant-voltage supply should not be paired with an unspecified constant-current driver merely because the wattage looks sufficient. Identify any separate PWM controller, its channel limits and the compatible user input.
Plan accessible, ventilated service space and branch feeds with the responsible installer. A power supply large enough for the total wattage does not establish the strip’s permitted single-run length or the suitability of its cables and connectors.
