{"id":19220,"date":"2026-10-17T11:05:57","date_gmt":"2026-10-17T03:05:57","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/marine-inverter-procurement-loads-location\/"},"modified":"2026-10-19T12:08:08","modified_gmt":"2026-10-19T04:08:08","slug":"marine-inverter-procurement-loads-location","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/","title":{"rendered":"Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries"},"content":{"rendered":"<article>\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\">Jadual Kandungan<\/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;\">Togol<\/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-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/#Marine_Inverter_Procurement_Loads_Location_and_Shore-Power_Boundaries\" >Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/#Write_the_load_schedule_in_operating_modes\" >Write the load schedule in operating modes<\/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\/ms\/news\/marine-inverter-procurement-loads-location\/#Qualify_the_location_before_freezing_the_bracket\" >Qualify the location before freezing the bracket<\/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\/ms\/news\/marine-inverter-procurement-loads-location\/#Keep_AC_source_selection_and_protective_design_separate\" >Keep AC source selection and protective design separate<\/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\/ms\/news\/marine-inverter-procurement-loads-location\/#Questions_before_a_fleet_or_OEM_order\" >Questions before a fleet or OEM order<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/#Does_pure_sine_wave_mean_marine_approved\" >Does pure sine wave mean marine approved?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/#Can_the_12_V_sample_be_substituted_into_a_24_V_boat\" >Can the 12 V sample be substituted into a 24 V boat?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/ms\/news\/marine-inverter-procurement-loads-location\/#Request_a_vessel-specific_quotation\" >Request a vessel-specific quotation<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"Marine_Inverter_Procurement_Loads_Location_and_Shore-Power_Boundaries\"><\/span>Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<figure data-image-role=\"application_a\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/01-application-a-82.png?quality=85&#038;strip=all\" alt=\"Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries  title=\" width=\"1536\" height=\"1024\" marine inverter procurement: location and shore-power boundaries title=\"\"><figcaption>An illustrative dry cabin location separates the inverter from the battery space. Vessel suitability and the AC distribution design require separate approval.<\/figcaption><\/figure>\n<p>For a boat builder or refit contractor, selecting an inverter starts with the vessel&#8217;s AC distribution and installation environment\u2014not just the highest wattage on a label. Specify the loads, battery operating window, source-transfer arrangement and required marine documentation before approving a model for repeated installation.<\/p>\n<p>The WHP-1000W-B provides a concrete electrical and mechanical example, not a declaration of marine suitability. The photographed unit is marked 12 V, pure sine wave, 1000 W and surge power 2000 W. The available product sheet does not establish marine certification, ignition protection, salt-spray performance or automatic shore-power transfer.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Write_the_load_schedule_in_operating_modes\"><\/span>Write the load schedule in operating modes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Separate essential navigation and communications equipment from convenience loads. Identify which devices already accept the vessel&#8217;s DC supply; converting DC to AC and back may add equipment without solving the actual interface requirement. For AC-only loads, record continuous watts, startup behavior, power factor where relevant, run time and simultaneous combinations.<\/p>\n<p>The WHP sheet lists several AC output-voltage and frequency options. Treat these as order selections, not a user-adjustable universal output. The photographed socket shape does not identify the supplied voltage. Freeze the AC voltage, frequency and approved connector configuration in the purchase specification and acceptance report.<\/p>\n<table>\n<thead>\n<tr>\n<th>Procurement input<\/th>\n<th>Why it changes the decision<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>House-battery voltage at charge and discharge limits<\/td>\n<td>A nominal 12 V label alone does not describe the voltage at the inverter under load.<\/td>\n<\/tr>\n<tr>\n<td>Load combinations and starting events<\/td>\n<td>A 2000 W peak marking has no documented duration in this sheet and cannot guarantee every motor start.<\/td>\n<\/tr>\n<tr>\n<td>Required operating hours<\/td>\n<td>Battery usable energy, conversion losses and standby consumption all affect endurance.<\/td>\n<\/tr>\n<tr>\n<td>Shore power, generator and inverter sources<\/td>\n<td>The AC distribution design must prevent unintended source interconnection.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure data-image-role=\"product_detail\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/03-product-detail-78.png?quality=85&#038;strip=all\" alt=\"Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries  title=\" width=\"1536\" height=\"1024\" marine inverter procurement: location and shore-power boundaries title=\"\"><figcaption>The original photographs show the AC interface, DC posts, fan guard and mounting flanges of the supplied sample.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Qualify_the_location_before_freezing_the_bracket\"><\/span>Qualify the location before freezing the bracket<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use a dry, accessible, ventilated equipment space with the source-supported mounting arrangement and unobstructed cooling paths. Do not treat an open finned case as a waterproof enclosure. Assess vibration, condensation, salt exposure, cable restraint and service access for the actual vessel.<\/p>\n<p>The <a href=\"https:\/\/www.victronenergy.com\/media\/pg\/MultiPlus_12V_500-1200VA_120Vac\/en\/installation.html\" target=\"_blank\" rel=\"noopener\">referenced marine inverter installation instructions<\/a> illustrate how equipment location, ventilation, battery separation and grounding depend on the vessel architecture. They cover the specified equipment only; their clearances, protection settings and approvals must not be transferred to a WHP product. Obtain the applicable installation evidence for the actual unit and vessel.<\/p>\n<p>The matching WHP sheet gives a 296 \u00d7 180 \u00d7 78 mm envelope. Allow additional space for the actual connectors, cable bends and maintenance; the envelope is not an installation-clearance schedule. The source photographs show original end mounting flanges. Do not substitute the end-plate assembly screws for equipment mounting points.<\/p>\n<figure data-image-role=\"application_b\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-application-b-79.png?quality=85&#038;strip=all\" alt=\"Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries  title=\" width=\"1536\" height=\"1024\" marine inverter procurement: location and shore-power boundaries title=\"\"><figcaption>A separate cabin-module layout emphasizes DC cable restraint and fan access; it does not establish marine certification or a tested installation.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Keep_AC_source_selection_and_protective_design_separate\"><\/span>Keep AC source selection and protective design separate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>An inverter is not automatically an inverter\/charger or a transfer switch. Ask the vessel electrical designer to define shore\/inverter isolation, protective-earth and neutral arrangements, overcurrent protection and residual-current protection for the intended jurisdiction and vessel type. Do not backfeed a shore inlet or connect independent AC sources together through an improvised cord.<\/p>\n<p>For the sample review, request the exact offered model and revision, output option, mounting instructions and applicable compliance documents. Arrange acceptance checks under the approved vessel electrical design: DC voltage at the inverter during the worst permitted load, AC behavior with actual appliances, temperature in the intended compartment and correct source-selection\/protection behavior. A successful bench demonstration does not establish approval for an engine space or a classified location.<\/p>\n<figure data-image-role=\"engineering_context\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/04-engineering-context-82.png?quality=85&#038;strip=all\" alt=\"Marine Inverter Procurement: Loads, Location and Shore-Power Boundaries  title=\" width=\"1536\" height=\"1024\" marine inverter procurement: location and shore-power boundaries title=\"\"><figcaption>Freeze the electrical variant and require the vessel-specific installation evidence before approving a repeated build.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Questions_before_a_fleet_or_OEM_order\"><\/span>Questions before a fleet or OEM order<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Does_pure_sine_wave_mean_marine_approved\"><\/span>Does pure sine wave mean marine approved?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Waveform describes an electrical characteristic. Environmental, ignition-protection and vessel installation requirements are separate evidence questions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_the_12_V_sample_be_substituted_into_a_24_V_boat\"><\/span>Can the 12 V sample be substituted into a 24 V boat?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Confirm the exact DC input option and operating range. A similar case or a common product family does not make input variants interchangeable.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Request_a_vessel-specific_quotation\"><\/span>Request a vessel-specific quotation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use the <a href=\"https:\/\/www.wehopower.com\/ms\/products\/\">WEHO product range<\/a> to identify the proposed inverter, then <a href=\"https:\/\/www.wehopower.com\/ms\/contact\/\">send an RFQ with the vessel application<\/a>: battery range, AC voltage\/frequency, load schedule, required hours, compartment conditions, source-selection design, required approvals, target quantity and delivery destination. Request a sample and controlled revision documents before committing to a repeated installation.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>A boat-builder&#8217;s specification checklist for AC loads, battery range, dry mounting, shore-power boundaries and exact inverter documentation.<\/p>","protected":false},"author":2,"featured_media":19216,"parent":0,"menu_order":46,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-19220","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news\/19220","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/comments?post=19220"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news\/19220\/revisions"}],"predecessor-version":[{"id":19625,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news\/19220\/revisions\/19625"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/media\/19216"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/media?parent=19220"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/ms\/wp-json\/wp\/v2\/news_category?post=19220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}