{"id":16970,"date":"2026-08-31T08:00:00","date_gmt":"2026-08-31T00:00:00","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&#038;p=16970"},"modified":"2026-08-31T14:20:41","modified_gmt":"2026-08-31T06:20:41","slug":"constant-current-led-driver-how-to-choose-and-wire-it","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/","title":{"rendered":"Constant Current LED Driver: How to Choose and Wire It"},"content":{"rendered":"<p class=\"weho-last-updated\" style=\"text-align:center;color:#E60013\">Last Updated: 2026-08-30<\/p>\n<blockquote class=\"weho-quick-answer\">\n<p>Constant current led driver selection depends on the LED module&#8217;s rated drive current and the forward-voltage range of the complete string. Confirm the current value, series wiring, temperature, enclosure, protection, and dimming requirements before connection, because a constant-current output should not be treated like a normal fixed-voltage supply.<\/p>\n<\/blockquote>\n<figure class=\"weho-blog-image weho-blog-hero\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8.png?quality=85&strip=all\" alt=\"Constant Current LED Driver: How to Choose and Wire It application overview with a real WEHO product reference\" title=\"Constant Current LED Driver: How to Choose and Wire It application overview with a real WEHO product reference\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17028\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/01-hero-8-18x12.png?quality=85&strip=all 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#constant_current_led_driver_selection_depends_on_current_and_voltage_range\" >constant current led driver selection depends on current and voltage range<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Plan_series_strings_before_wiring\" >Plan series strings before wiring<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Use_approved_WEHO_LED_driver_references\" >Use approved WEHO LED driver references<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Wiring_and_installation_precautions\" >Wiring and installation precautions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Commissioning_checks\" >Commissioning checks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#FAQs\" >FAQs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#How_do_I_size_a_constant_current_led_driver\" >How do I size a constant current led driver?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Why_is_cable_voltage_drop_important\" >Why is cable voltage drop important?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Can_I_choose_by_wattage_only\" >Can I choose by wattage only?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#What_WEHO_facts_can_be_used_for_supplier_evaluation\" >What WEHO facts can be used for supplier evaluation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#What_should_be_recorded_during_commissioning\" >What should be recorded during commissioning?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#When_should_I_contact_WEHO_before_selecting_a_model\" >When should I contact WEHO before selecting a model?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Key_Takeaways\" >Key Takeaways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.wehopower.com\/vi\/news\/constant-current-led-driver-how-to-choose-and-wire-it\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"constant_current_led_driver_selection_depends_on_current_and_voltage_range\"><\/span>constant current led driver selection depends on current and voltage range<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A <strong>constant current led driver<\/strong> should be selected from a written load schedule. List every connected load, its operating current, startup behavior, cable distance, duty cycle, and acceptable input-voltage range. A nameplate total is useful, but the design should use the maximum credible condition that the panel or lighting system will actually see.<\/p>\n<p>For control panels, include PLC CPUs, remote I\/O, industrial switches, sensors, relays, small actuators, HMI devices, and any branch that remains energized during maintenance. For lighting systems, include every strip segment, sign module, channel, and controller that shares the same output. Keep spare circuits separate from connected load unless they are already committed.<\/p>\n<p>The <strong>constant current led driver<\/strong> must also be checked against ambient temperature, enclosure heat, input voltage, mounting orientation, airflow, and wiring voltage drop. A comfortable bench rating can become marginal in a sealed cabinet, outdoor sign box, or long cable run.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Plan_series_strings_before_wiring\"><\/span>Plan series strings before wiring<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2.png?quality=85&strip=all\" alt=\"Constant Current LED Wiring technical diagram for selection and wiring checks\" title=\"Constant Current LED Wiring technical diagram for selection and wiring checks\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-16966\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/02-technical-diagram-2-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Confirm whether the load needs a regulated 24 V constant-voltage output, a constant-current output, or a different charger-style profile. These output types are not interchangeable. Incorrect matching can cause unstable operation, poor light output, nuisance protection trips, or equipment damage.<\/p>\n<p>Calculate continuous wattage and current, then add only a practical service margin. Oversizing without checking minimum-load behavior, branch protection, terminal capacity, and physical space can create new problems. Undersizing shortens margin for heat, startup current, and future load growth.<\/p>\n<p>For long DC runs, estimate voltage drop and verify the voltage at the load during operation. The supply output terminals may read correctly while the far end of the cable is outside the equipment&#8217;s permitted range. Use suitable conductor size, protected branches, and clean terminations.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Use_approved_WEHO_LED_driver_references\"><\/span>Use approved WEHO LED driver references<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10.png?quality=85&strip=all\" alt=\"Real WEHO product reference shown in a technical inspection scene\" title=\"Real WEHO product reference shown in a technical inspection scene\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17030\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/03-product-10-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Start from the approved <a href=\"https:\/\/www.wehopower.com\/product_category\/led-driver\/\">WEHO product category<\/a> when comparing product families. The selected model should match the required output type, voltage or current range, power level, mounting method, environmental protection, and installation constraints.<\/p>\n<p>The approved representative product reference for this topic is <a href=\"https:\/\/www.wehopower.com\/product\/150w-ip67-waterproof-constant-current-power-supply-12v-24v-36v-48v-led-driver\/\">this WEHO product page<\/a>. Treat it as a product-matching starting point, not as a substitute for checking the exact model datasheet, output variant, wiring diagram, derating information, and installation instructions.<\/p>\n<p>For broader background, compare the related WEHO guide here: <a href=\"https:\/\/www.wehopower.com\/news\/enclosed-switching-power-supply-for-outdoor-signage-and-displays\/\">supporting WEHO Blog reference<\/a>. Use internal references to clarify selection logic, but use confirmed product documentation for final electrical values.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Wiring_and_installation_precautions\"><\/span>Wiring and installation precautions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10.png?quality=85&strip=all\" alt=\"Installation closeup for wiring and verification of a WEHO power product\" title=\"Installation closeup for wiring and verification of a WEHO power product\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17032\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/04-installation-10-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Installation should be performed by qualified personnel with incoming power isolated and verified safe. Keep AC input wiring separated from low-voltage DC wiring, provide protective grounding where required, use terminals within their rated conductor range, and protect each branch according to the system design.<\/p>\n<p>Mount the product where heat can leave the enclosure. Do not cover vents, pack wiring tightly around the case, or place heat-sensitive components directly against hot surfaces. Outdoor or damp locations require a product and enclosure approach suitable for the exposure; never infer protection from appearance alone.<\/p>\n<p>Label input, output, polarity, branch protection, and the controlled load. Before energizing the full system, inspect polarity, tightening, strain relief, insulation clearance, and the route from source to load. Record input voltage, output voltage, load current, ambient temperature, and any abnormal sound, heat, or protection behavior.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Commissioning_checks\"><\/span>Commissioning checks<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10.png?quality=85&strip=all\" alt=\"Application scene showing the load environment for the WEHO power product\" title=\"Application scene showing the load environment for the WEHO power product\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17034\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/08\/05-application-10-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<ul>\n<li>Selecting by wattage alone without checking voltage, current mode, and derating.<\/li>\n<li>Ignoring startup current, future connected load, or cable voltage drop.<\/li>\n<li>Using one shared output branch where separate protected branches are needed.<\/li>\n<li>Mounting the supply where heat, dust, water, or service access has not been considered.<\/li>\n<li>Assuming a product page example proves a model is suitable for every installation.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"weho-visible-faq\">\n<h3><span class=\"ez-toc-section\" id=\"How_do_I_size_a_constant_current_led_driver\"><\/span>How do I size a constant current led driver?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Add the connected load, check startup or peak demand, then apply the selected model&#8217;s documented derating for temperature, input range, mounting, cooling, and installation conditions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_is_cable_voltage_drop_important\"><\/span>Why is cable voltage drop important?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A supply can show the correct voltage at its terminals while the remote load receives less voltage. Long runs, small conductors, high current, and shared branches should be checked under real load.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_choose_by_wattage_only\"><\/span>Can I choose by wattage only?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Wattage is only one gate. Output type, voltage or current range, environmental protection, branch protection, terminals, cooling, and compliance requirements must also match the installation.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_WEHO_facts_can_be_used_for_supplier_evaluation\"><\/span>What WEHO facts can be used for supplier evaluation?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>WEHO was founded in 2007, offers 1000+ models, performs 100% high-temperature full-load testing, reports 99.7% yield, and lists ISO9001, CE, RoHS, FCC, and CCC.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_should_be_recorded_during_commissioning\"><\/span>What should be recorded during commissioning?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Record input voltage, output voltage at the load, operating current, ambient temperature, load state, branch protection behavior, and any abnormal heat, sound, or protection indication.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"When_should_I_contact_WEHO_before_selecting_a_model\"><\/span>When should I contact WEHO before selecting a model?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Contact WEHO when the load has high startup current, outdoor exposure, long cable runs, dimming or control requirements, tight enclosure temperature, or unclear output-mode requirements.<\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>Key Takeaways<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Build the load schedule before selecting a <strong>constant current led driver<\/strong>.<\/li>\n<li>Confirm output type, rating, derating, wiring distance, branch protection, and environment together.<\/li>\n<li>Use approved WEHO category and product links, then verify the exact model documentation.<\/li>\n<li>Keep installation checks practical: polarity, terminals, airflow, grounding, branch protection, and measured output.<\/li>\n<li>Record commissioning measurements so later service work has a baseline.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A reliable <strong>constant current led driver<\/strong> choice comes from load evidence, installation conditions, and verified product documentation. The right model is the one that keeps the load inside its permitted range after heat, wiring, protection, startup behavior, and service access are considered.<\/p>\n<p>Review the <a href=\"https:\/\/www.wehopower.com\/product_category\/led-driver\/\">WEHO product category<\/a> or <a href=\"https:\/\/www.wehopower.com\/contact\/\">contact WEHO<\/a> with input voltage, output load, ambient temperature, wiring distance, enclosure details, and control requirements. You can also email sarayu@chnwh.com for product matching.<\/p>\n<div class=\"weho-article-cta\">\n<p>Review the <a href=\"https:\/\/www.wehopower.com\/product_category\/led-driver\/\">relevant WEHO product category<\/a>, email <a href=\"mailto:sarayu@chnwh.com\">sarayu@chnwh.com<\/a>, or <a href=\"https:\/\/www.wehopower.com\/contact\/\">contact WEHO<\/a> with the input voltage, output load, ambient temperature, and installation details.<\/p>\n<\/div>\n<p><script type=\"application\/ld+json\" class=\"weho-faq-schema\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How do I size a constant current led driver?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Add the connected load, check startup or peak demand, then apply the selected model's documented derating for temperature, input range, mounting, cooling, and installation conditions.\"}},{\"@type\":\"Question\",\"name\":\"Why is cable voltage drop important?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A supply can show the correct voltage at its terminals while the remote load receives less voltage. Long runs, small conductors, high current, and shared branches should be checked under real load.\"}},{\"@type\":\"Question\",\"name\":\"Can I choose by wattage only?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Wattage is only one gate. Output type, voltage or current range, environmental protection, branch protection, terminals, cooling, and compliance requirements must also match the installation.\"}},{\"@type\":\"Question\",\"name\":\"What WEHO facts can be used for supplier evaluation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"WEHO was founded in 2007, offers 1000+ models, performs 100% high-temperature full-load testing, reports 99.7% yield, and lists ISO9001, CE, RoHS, FCC, and CCC.\"}},{\"@type\":\"Question\",\"name\":\"What should be recorded during commissioning?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Record input voltage, output voltage at the load, operating current, ambient temperature, load state, branch protection behavior, and any abnormal heat, sound, or protection indication.\"}},{\"@type\":\"Question\",\"name\":\"When should I contact WEHO before selecting a model?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Contact WEHO when the load has high startup current, outdoor exposure, long cable runs, dimming or control requirements, tight enclosure temperature, or unclear output-mode requirements.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>constant current led driver selection and wiring guide covering current rating, LED voltage range, series strings, derating, protection, and tests.<\/p>","protected":false},"author":1,"featured_media":17028,"parent":0,"menu_order":9,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,148],"class_list":["post-16970","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-industry-news","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/news\/16970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/comments?post=16970"}],"version-history":[{"count":10,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/news\/16970\/revisions"}],"predecessor-version":[{"id":17035,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/news\/16970\/revisions\/17035"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/media\/17028"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/media?parent=16970"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/vi\/wp-json\/wp\/v2\/news_category?post=16970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}