If it is not calculated correctly, the following may occur voltage drop<\/strong> and the strip may not be under the expected tension.<\/p>\n\n\n\n To avoid having to do all these calculations by hand, we have created a calculator specifically for LED strip installations.<\/p>\n\n\n\n The first thing is to know exactly which product you are going to install. Do not calculate the cable length using approximate figures. Always check the technical data sheet:<\/p>\n\n\n\n For swimming pool installations, you should also check that the strip is designed for that application. The TRYLED Flexible Neon LED Strip, IP68<\/a> It is currently available in 12 V and 24 V DC, and in cool white, warm white and 4-wire RGB. You can also view the full range of Trypool swimming pool lighting<\/a>.<\/p>\n\n\n\n You don\u2019t need to do the calculations by hand. The tool is designed so that you can enter the actual details of the installation and compare different options.<\/p>\n\n\n\n Please indicate whether the strip operates at:<\/p>\n\n\n\n 12 V<\/strong><\/p>\n\n\n\n or:<\/p>\n\n\n\n 24 V<\/strong><\/p>\n\n\n\n Always use the voltage specified in the product data sheet.<\/p>\n\n\n\n Find the power of the strip.<\/p>\n\n\n\n For example:<\/p>\n\n\n\n 10 W\/m<\/strong><\/p>\n\n\n\n If you\u2019re going to install 4 metres:<\/p>\n\n\n\n 10 \u00d7 4 = 40 W<\/strong><\/p>\n\n\n\n The calculator will perform this calculation automatically.<\/p>\n<\/div>\n\n\n\n It indicates only the length of each strip<\/strong>.<\/p>\n\n\n\n Example: 3.5 m<\/strong><\/p>\n\n\n\n You can then specify how many identical strips you are going to install.<\/p>\n\n\n\n For example:<\/p>\n\n\n\n 1 strip<\/strong>\/ 2 strips<\/strong>\/ 3 strips<\/strong><\/p>\n\n\n\n This figure is important because it increases the total power output of the system.<\/p>\n\n\n\n Measure from the power supply to the strip. If there is:<\/p>\n\n\n\n 20 metres<\/strong><\/p>\n\n\n\n Enter: 20 m<\/strong><\/p>\n\n\n\n Do not enter 40 m. The calculator already takes the required electrical distance into account internally.<\/p>\n\n\n\n Image generated using artificial intelligence*<\/p>\n\n\n\n Select:<\/p>\n\n\n\n White \u2014 2-ply<\/strong> o RGB \u2014 4-wire<\/strong><\/p>\n\n\n\n The tool adjusts the calculation to the selected settings.<\/p>\n\n\n\n If you\u2019re going to install several, you can choose from:<\/p>\n\n\n\n Standard cable<\/strong> o Separate cable per strip<\/strong><\/p>\n\n\n\n This information may significantly affect the required section.<\/p>\n\n\n\n If the strip includes, for example:<\/p>\n\n\n\n 20 cm of 0.34 mm\u00b2 cable<\/strong><\/p>\n\n\n\n Enter these values as well.<\/p>\n\n\n\n Although it is a short stretch, it forms part of the circuit.<\/p>\n\n\n\n You can specify:<\/p>\n\n\n\n Feeding from one end<\/strong> o Feeding from both ends<\/strong><\/p>\n\n\n\n If you select two end points, enter the distance for each route.<\/p>\n\n\n\n For example:<\/p>\n\n\n\n 1.5 mm\u00b2<\/strong>\/ 2.5 mm\u00b2<\/strong> \/ 4 mm\u00b2<\/strong><\/p>\n<\/div>\n\n\n\n The calculator will check that section and will also display the recommended commercial section<\/strong> based on the data entered.<\/p>\n\n\n\n Once you have entered the data, focus primarily on four values:<\/p>\n\n\n\n This is the power consumption of all the connected strips.<\/p>\n\n\n\n State the amperes that the circuit will need to carry.<\/p>\n\n\n\n It indicates how much voltage is lost along the route.<\/p>\n\n\n\n This is the commercial section suggested by the tool based on the data entered and the configured drop criteria.<\/p>\n<\/div>\n\n\n\n The calculator initially uses a criterion based on the maximum drop in the 3 %<\/strong>, which can be amended.<\/p>\n\n\n\n For example, at 12 V:<\/p>\n\n\n\n 3 \u00d7 % at 12 V = 0.36 V<\/strong><\/p>\n\n\n\n Therefore:<\/p>\n\n\n\n 12 \u2212 0.36 = 11.64 V<\/strong><\/p>\n\n\n\n The calculator serves as a tool to assist in analysing voltage drop. The complete installation must also verify the capacity of the conductors, the power supply, the controller, the protective devices and the applicable electrical requirements.<\/p>\n<\/blockquote>\n\n\n\n Because the cable has resistance. The longer the distance, the greater the voltage drop may be if we maintain the same cross-sectional area. Let\u2019s look at a very simple example.<\/p>\n\n\n\n Panel: 10 W\/m<\/strong><\/p>\n\n\n\n Length: 3.5 m<\/strong><\/p>\n\n\n\n Power: 10 \u00d7 3.5 = 35 W<\/strong><\/p>\n\n\n\n At 12 V: 35 \u00f7 12 = 2.92 A<\/strong><\/p>\n\n\n\n It is not the same to carry that 2.92 A for: 2 metres<\/strong> that during: 20 metres<\/strong><\/p>\n\n\n\n That is why two installations using exactly the same strip may require different cables.<\/p>\n\n\n\n The powers are added together. For example:<\/p>\n\n\n\n We have two strips of: 35 W each<\/strong><\/p>\n\n\n\n Total power:<\/p>\n\n\n\n 35 + 35 = 70 W<\/strong><\/p>\n\n\n\n At 12 V:<\/p>\n\n\n\n 70 \u00f7 12 = 5.83 A<\/strong><\/p>\n\n\n\n But there is another important point:<\/p>\n\n\n\n The main section carries the current from both strips.<\/p>\n\n\n\n SOURCE <\/p>\n\n\n\n \u251c\u2500\u2500 Cable 1 \u2192 Strip 1<\/p>\n\n\n\n \u2514\u2500\u2500 Cable 2 \u2192 Strip 2<\/p>\n\n\n\n Each journey is calculated separately.<\/p>\n\n\n\n The calculator allows you to compare the two configurations.<\/p>\n\n\n\n A strip can be powered from a single end:<\/p>\n\n\n\n However, in certain installations, it may be advisable to supply power from both ends:<\/p>\n\n\n\n This can be helpful when we want to minimise voltage differences along a long strip.<\/p>\n\n\n\n The calculator allows you to select the following directly:<\/p>\n\n\n\n Feed from both ends and enter the distance to each side.<\/strong><\/p>\n\n\n\n If you feed a strip in from both ends, We do not recommend using two separate modulators<\/strong>.<\/p>\n\n\n\n Even if you need to lay more cable, both ends must come from the the same modulator or controller<\/strong>.<\/p>\n\n\n\n Two independent modulators could send different signals to the same strip.<\/p>\n\n\n\n At Trypool, you can browse the range of swimming pool lighting controllers<\/a>.<\/p>\n\n\n\n When there are several strips, we recommend planning the installation in parallel<\/strong>.<\/p>\n\n\n\n For example:<\/p>\n\n\n\n And if each strip needs to be powered at both ends:<\/p>\n\n\n\n We do not recommend connecting all the strips one after the other as if they were a single, very long strip.<\/p>\n\n\n\n Before you do that, always add up:<\/p>\n\n\n\n total power + total current<\/strong><\/p>\n\n\n\n and check the capacity of the power supply and the modulator.<\/p>\n\n\n\n One of the advantages of the calculator is that you can change the voltage and see what happens.<\/p>\n\n\n\n Let\u2019s take a look at an installation of:<\/p>\n\n\n\n 100 W<\/strong><\/p>\n\n\n\n 100 \u00f7 12 = 8.33 A<\/strong><\/p>\n\n\n\n 100 \u00f7 24 = 4.17 A<\/strong><\/p>\n\n\n\n For the same power, increasing the voltage reduces the current. This can make design easier when dealing with significant distances. But be careful:<\/p>\n\n\n\n The strip, power supply and controller must be compatible with the chosen voltage.<\/p>\n\n\n\n You can look up, for example:<\/p>\n\n\n\n On a four-wire RGB strip, you will normally find:<\/p>\n\n\n\n common positive + R + G + B<\/strong><\/p>\n\n\n\n If the strip is powered from both ends, the connections must match.<\/p>\n\n\n\n In other words:<\/p>\n\n\n\n + \u2192 +<\/strong><\/p>\n\n\n\n R \u2192 R<\/strong><\/p>\n\n\n\n G \u2192 G<\/strong><\/p>\n\n\n\n B \u2192 B<\/strong><\/p>\n\n\n\n Channels must not be crossed, nor must connections be reversed.<\/p>\n\n\n\n You can also check out our content on Wi-Fi control of swimming pool lighting<\/a> to find out about other ways of controlling the system.<\/p>\n\n\n\n Calculating the cable length only makes sense if we first choose a product that is ready for installation.<\/p>\n\n\n\n For this type of project, you can consult the TRYLED Flexible Neon LED Strip, IP68<\/a>.<\/p>\n\n\n\n The current entry includes versions of 12 V and 24 V DC<\/strong>, cool white, warm white and 4-wire RGB.<\/p>\n\n\n\n To complete a project, you can also have a look at:<\/p>\n\n\n\n Before feeding through the first cable, check:<\/p>\n\n\n\n It depends on the power, current, distance and configuration of the installation. There is no single cross-section that applies to all projects.<\/p> <\/div> No. Simply enter the distance from the source to the strip. The tool performs the relevant calculation internally.<\/p> <\/div> This is because as the length increases, the conductor\u2019s resistance increases, which can lead to a greater voltage drop. One way to reduce this is to use a larger cross-section.<\/p> <\/div> The common section will have to carry the current for all the connected strands. The calculator allows you to compare a common cable with separate lines.<\/p> <\/div> It depends on the project. For the same power output, less current flows at 24 V than at 12 V. You must always use a strip, power supply and controller that are compatible with the selected voltage.<\/p> <\/div> Yes, provided the product\u2019s settings and instructions allow it. The calculator enables you to work out the distances for both routes.<\/p> <\/div> This is not the configuration we recommend. If a single strip is powered from both ends, both power supply lines must originate from the the same modulator or controller<\/strong>.<\/p> <\/div> For this type of project, we recommend setting them up in parallel and calculating the corresponding circuits, ensuring that the total power and current do not exceed the equipment\u2019s capacity.<\/p> <\/div> <\/div>\n\n\n\n Content created using AI<\/p>\n\n\n\n <\/p>","protected":false},"excerpt":{"rendered":" Elegir una tira LED para piscina no consiste \u00fanicamente en calcular cu\u00e1ntos metros necesitas. Tambi\u00e9n debes saber: Si no se calcula correctamente, puede aparecer ca\u00edda de tensi\u00f3n y la tira puede no recibir la tensi\u00f3n prevista. Para evitar tener que hacer todos estos c\u00e1lculos manualmente hemos creado una calculadora espec\u00edfica para instalaciones de tiras LED. […]<\/p>\n","protected":false},"author":1,"featured_media":7594,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[856],"tags":[],"class_list":["post-7581","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iluminacion-piscinas"],"acf":[],"yoast_head":"\n1. Before calculating the cable length: choose the right LED strip<\/h2>\n\n\n\n
\n
12 V or 24 V.<\/li>\n\n\n\n
For example, 12 V DC.<\/li>\n\n\n\n
Usually expressed in W\/m.<\/li>\n\n\n\n
Metres of strip that you are going to use.<\/li>\n\n\n\n
White or RGB.<\/li>\n\n\n\n
For example, 2-wire or 4-wire RGB.<\/li>\n<\/ul>\n\n\n\n![\"\"](\"https:\/\/trypool.com\/wp-content\/uploads\/ChatGPT-Image-13-ago-2026-14_15_10_11zon-1024x576.webp\")
<\/figure>\n\n\n\nHow to use the LED strip cable calculator<\/h2>\n\n\n\n
Step 1. Select the voltage<\/h3>\n\n\n\n
\n\n\n\nStep 2. Enter the W\/m<\/h3>\n\n\n\n
\n\n\n\nStep 3. Enter the number of metres of tape<\/h3>\n\n\n\n
\n\n\n\nStep 4. Enter the number of strips<\/h3>\n\n\n\n
\n\n\n\nStep 5. Enter the distance from the source<\/h3>\n\n\n\n
![\"\"](\"https:\/\/trypool.com\/wp-content\/uploads\/ChatGPT-Image-13-ago-2026-14_34_40_11zon-1024x576.webp\")
<\/figure>\n\n\n\n
\n\n\n\nStep 6. Choose the type of strip<\/h3>\n\n\n\n
\n\n\n\nStep 7. Explain how you are going to wire several strips<\/h3>\n\n\n\n
\n\n\n\nStep 8. Insert the cable that is soldered to the strip<\/h3>\n\n\n\n
\n\n\n\nStep 9. Choose between single-ended or dual-ended power supply<\/h3>\n\n\n\n
\n\n\n\nStep 10. Enter the section you want to check<\/h3>\n\n\n\n
3. How to interpret the calculator\u2019s result<\/h2>\n\n\n\n
Total power<\/h3>\n\n\n\n
Current<\/h3>\n\n\n\n
Voltage drop<\/h3>\n\n\n\n
Recommended section<\/h3>\n\n\n\n
\n
4. Why does distance have such a big impact?<\/h2>\n\n\n\n
\n\n\n\n5. What happens if we install several LED strips?<\/h2>\n\n\n\n
Do the strips share a cable or do they have separate circuits?<\/h2>\n\n\n\n
Standard cable<\/h3>\n\n\n\n
SOURCE\n \u2193\nMAIN CABLE\n \u251c\u2500\u2500 Strand 1\n \u2514\u2500\u2500 Strand 2<\/code><\/pre>\n\n\n\nSeparate lines<\/h3>\n\n\n\n
6. Feeding from one or both ends<\/h2>\n\n\n\n
CONTROLADOR \u2192 [ TIRA LED ]<\/code><\/pre>\n\n\n\n \u2192 END A\nCONTROLLER\n \u2192 END B<\/code><\/pre>\n\n\n\n
\n\n\n\n7. Very important: both ends must be connected to the same modulator<\/h2>\n\n\n\n
Correct<\/h3>\n\n\n\n
Power supply\n \u2193\nRGB modulator itself\n \u251c\u2500\u2500\u2500\u2500\u2192 end A\n \u2502\n \u2514\u2500\u2500\u2500\u2500\u2192 end B<\/code><\/pre>\n\n\n\nNot recommended<\/h3>\n\n\n\n
Modulador 1 \u2192 extremo A\n [ TIRA LED ]\nModulador 2 \u2192 extremo B<\/code><\/pre>\n\n\n\n8. How to connect several LED strips<\/h2>\n\n\n\n
Source\n \u2193\nModulator\n \u251c\u2500\u2500 Strip 1\n \u251c\u2500\u2500 Strip 2\n \u2514\u2500\u2500 Strip 3<\/code><\/pre>\n\n\n\nSource\n \u2193\nSame modulator\n \u2502\n \u251c\u2500\u2500 Strip 1 \u2192 end A\n \u2502 \u2192 end B\n \u2502\n \u251c\u2500\u2500 Strip 2 \u2192 end A\n \u2502 \u2192 end B\n \u2502\n \u2514\u2500\u2500 Strip 3 \u2192 end A\n \u2192 end B<\/code><\/pre>\n\n\n\n
\n\n\n\n9. 12V or 24V?<\/h2>\n\n\n\n
12 V<\/h3>\n\n\n\n
24 V<\/h3>\n\n\n\n
12V DC and 24V DC are not interchangeable<\/h3>\n\n\n\n
\n
10. 4-wire RGB strips<\/h2>\n\n\n\n
END A TO END B\n\n+ \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 +\nR \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 R\nG \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 G\nB \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 B<\/code><\/pre>\n\n\n\n12. Which LED strip should you use in a swimming pool?<\/h2>\n\n\n\n
\n
\n\n\n\n13. Checklist before installation<\/h2>\n\n\n\n
\n
Frequently asked questions<\/h2>\n\n\n\n