1. What is an LED Strip Power Supply Calculator?

Definition: This calculator determines the appropriate power supply wattage needed for LED strip installations, including a 20% safety margin.

Purpose: It helps lighting designers and DIY enthusiasts select the correct power supply for their LED strip projects to ensure safe and reliable operation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{supply} \) — Required power supply wattage (watts)
• \( Length \) — Total length of LED strip (meters)
• \( P_{per\ meter} \) — Power consumption per meter (watts/meter)
• \( 1.2 \) — 20% safety margin factor

Explanation: The total power requirement is calculated by multiplying length by power per meter, then increased by 20% to ensure the power supply isn't overloaded.

3. Importance of Proper Power Supply Calculation

Details: Correct power supply sizing prevents overheating, voltage drop, and premature failure of both the LED strips and power supply.

4. Using the Calculator

Tips: Enter the total length of LED strip in meters and the power consumption per meter (typically listed in the strip's specifications). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why include a 20% safety margin?
A: The margin accounts for power supply efficiency losses, voltage drop over long runs, and ensures the power supply operates at 80% capacity for longevity.

Q2: Where do I find the power per meter value?
A: This is specified in the LED strip's datasheet or product description (e.g., 4.8W/m, 7.2W/m, 14.4W/m).

Q3: What if my strips are different colors/RGB?
A: Use the maximum power consumption value (usually white or all colors at full brightness).

Q4: How do I account for multiple strips?
A: Sum all lengths of the same strip type or calculate each separately if different types.

Q5: Should I round up the result?
A: Yes, always round up to the nearest available power supply wattage (e.g., if you get 58W, choose a 60W supply).