{"id":55623,"date":"2025-08-25T17:00:11","date_gmt":"2025-08-25T09:00:11","guid":{"rendered":"https:\/\/www.elstarled.com\/?p=55623"},"modified":"2025-11-05T13:59:36","modified_gmt":"2025-11-05T05:59:36","slug":"5m-vs-10m-led-strip","status":"publish","type":"post","link":"https:\/\/www.elstarled.com\/fr\/5m-vs-10m-led-strip\/","title":{"rendered":"5 m vs 10 m LED Strip: Which Length Is Right for Your Project?"},"content":{"rendered":"

Are you unsure whether a 5 m strip will light your entire cabinet or if you need a full 10 m run? This guide breaks down what those length labels mean, shows how power draw and voltage drop differ, and helps you choose the perfect strip length for any application.<\/p>\n

What Does \u201c5 m\u201d or \u201c10 m\u201d Mean for LED Strips?<\/strong><\/h2>\n

The \u201c5 m\u201d or \u201c10 m\u201d label refers to the total length of LED strip on the reel or spool. A 5 m strip contains six 1 m segments of LEDs joined by soldered copper pads, while a 10 m strip doubles that length. You can cut at the marked cut-lines every 5 cm or meter, but you cannot extend beyond the rated length without power injection or risking voltage drop.<\/p>\n

Is a 5 m LED strip enough for under-cabinet lighting?<\/strong> A standard 5 m strip will usually cover a single run under kitchen cabinets. If your run is longer, consider a 10 m strip or multiple shorter strips powered in parallel to maintain brightness.<\/p>\n

Power Consumption of 5 m vs 10 m Strips<\/strong><\/h2>\n

LED strips typically draw 14.4 W per meter<\/strong> at 12 V (for 60 LEDs\/m density). That translates to:<\/p>\n\n\n\n\n\n\n
Longueur<\/span><\/th>\nPower per m<\/span><\/th>\nTotal Power<\/span><\/th>\nRecommended PSU<\/span><\/th>\n<\/tr>\n<\/thead>\n
5 m<\/span><\/td>\n14.4 W\/m<\/span><\/td>\n72 W<\/span><\/td>\n100 W 12 V supply<\/span><\/td>\n<\/tr>\n
10 m<\/span><\/td>\n14.4 W\/m<\/span><\/td>\n144 W<\/span><\/td>\n200 W 12 V supply<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

How much power does a 10 m LED strip use?<\/strong>
\nA 10 m strip at 14.4 W\/m draws approximately 144 W<\/strong>, so you\u2019ll need at least a 200 W 12 V<\/strong> alimentation \u00e9lectrique<\/strong> to maintain safe headroom and prevent voltage sag.<\/p>\n

How Length Affects Voltage Drop & Brightness<\/strong><\/h2>\n

As LED strip length increases, voltage drop becomes more pronounced, causing LEDs at the far end to appear dimmer. Voltage drop (\u2206V) is calculated as:
\n\u2206V = I \u00d7 R \u00d7 L<\/p>\n

    \n
  • I<\/strong> = current draw (A)<\/li>\n
  • R<\/strong> = copper trace resistance per metre (\u03a9\/m, approx. 0.02 \u03a9\/m)<\/li>\n
  • L<\/strong> = strip length (m)<\/li>\n<\/ul>\n

    Worked example:<\/strong><\/p>\n

      \n
    • 5 m run:<\/strong> I = 5 m \u00d7 1.2 A\/m = 6 A \u2192 \u2206V = 6 A \u00d7 0.02 \u03a9\/m \u00d7 5 m = 0.6 V<\/strong> (5 % of 12 V)<\/li>\n
    • 10 m run:<\/strong> I = 10 m \u00d7 1.2 A\/m = 12 A \u2192 \u2206V = 12 A \u00d7 0.02 \u03a9\/m \u00d7 10 m = 2.4 V<\/strong> (20 % of 12 V)<\/li>\n<\/ul>\n

      Graph showing voltage drop rising from 0.6 V at 5 m to 2.4 V at 10 m for a typical LED strip current.<\/span><\/p>\n

      \"Graph<\/p>\n

       <\/p>\n

      \"Diagram<\/p>\n

      How to Power Longer Runs Without Dimming<\/strong><\/h2>\n

      To maintain even brightness on LED-strip runs exceeding 5 m, it\u2019s essential to inject power at regular intervals and use appropriate wiring techniques:<\/p>\n

        \n
      • Power Injection Every 5 m:<\/strong> Feed 12 V from your power supply into the strip at the start and again at the 5 m mark (or midpoint for longer runs) to counteract voltage drop.<\/li>\n
      • Parallel Power Feeds:<\/strong> For especially long runs (10 m+), consider splitting your strip into two or more shorter segments wired in parallel to the same supply.<\/li>\n
      • Thicker-Gauge Wire:<\/strong> Use at least 16 AWG for runs up to 10 m; upgrade to 14 AWG or 12 AWG for higher-current applications to reduce line resistance.<\/li>\n<\/ul>\n

        \"Diagram<\/p>\n

        How to power LED strips greater than 5 m?<\/strong><\/p>\n

        Always inject 12 V power into the strip at least every 5 m using dedicated feed wires back to the PSU. If you can\u2019t physically access midpoints, split the strip into parallel 5 m segments each powered directly to ensure stable voltage and brightness.<\/p>\n

        When to Choose 5 m vs 10 m LED Strips<\/strong><\/h2>\n
          \n
        • Under-cabinet & Accent Runs (\u2264 5 m):<\/strong> A 5 m reel usually covers a typical kitchen run or bookshelf accent without mid-run power injection. Use for simple installations where one power feed suffices.<\/li>\n
        • Long Continuous Runs (5\u201310 m):<\/strong> If your run exceeds 5 m but stays under 10 m, opt for a 10 m strip with two injection points to maintain uniform brightness. Ideal for cove lighting, room perimeter accents, or outdoor soffits.<\/li>\n
        • Modular Installations:<\/strong> For complex layouts, split into multiple 5 m segments wired in parallel to your supply for easier power management and fault isolation.<\/li>\n<\/ul>\n

          Conclusion & Next Steps<\/strong><\/h2>\n

          Choosing between a 5 m and 10 m LED strip hinges on your run length, power-injection access, and desired brightness consistency. Use a LED Voltage-Drop Calculator<\/strong> to verify voltage sag, and follow our LED Power-Injection Guide<\/strong> for wiring best practices. For technical standards, consult the DOE Solid-State Lighting Fact Sheet 2024<\/strong> et le IEC Voltage-Drop Standard PDF.<\/strong><\/p>\n

          Key takeaway:<\/strong> Match strip length to your layout and power-injection plan\u20145 m for short, single-feed runs; 10 m with multiple injection points or parallel segments for longer spans.<\/p>","protected":false},"excerpt":{"rendered":"

          Are you unsure whether a 5 m strip will light your entire cabinet or if you need a full 10 m run? This guide breaks down [...]<\/span><\/p>","protected":false},"author":4,"featured_media":55625,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[516],"tags":[],"yoast_head":"\n5 m vs 10 m LED Strip | Power, Voltage Drop & Best Length<\/title>\n<meta name=\"description\" content=\"Compare 5 m and 10 m LED strips for power use, voltage drop, and installation. 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