{"id":410,"count":286,"description":"The electrical components are the part of the installation that nobody shows in photos, yet they determine whether the system works properly or causes problems. Cable of the correct cross-section, correctly sized protective devices, properly crimped terminals and a tidy layout: this is what distinguishes a reliable installation from one that causes headaches.\n\nWhat you need for a direct current installation\nIn off-grid photovoltaic, motorhome and marine applications, you work with low voltages and very high currents \u2013 the exact opposite of a conventional domestic installation. This completely changes the criteria for selecting materials.\n<strong><a href=\"\/en\/product-category\/electrical-equipment\/electrical-cables\/\">Cable<\/a>:<\/strong> At 12 V and 1,000 W, that\u2019s over 85 A. The cables become overloaded and the voltage drop reduces the output. Always calculate using the <a href=\"\/en\/how-to-calculate-the-cross-section-of-a-cable\/\">Cross-section table by power rating<\/a> before you buy.\n<strong><a href=\"\/en\/product-category\/electrical-equipment\/fuses\/\">Fuses<\/a>:<\/strong> Approved for direct current, not for alternating current. An alternating current fuse does not effectively cut off a direct current arc. Depending on the range, you will have <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/midi-fuses\/\">MIDI<\/a>, <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/mega-fuses\/\">MEGA<\/a> o <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/anl-fuses\/\">ANL<\/a>, with its <a href=\"\/en\/product-category\/electrical-equipment\/fuse-holder\/\">fuse holder<\/a>.\n<strong><a href=\"\/en\/product-category\/electrical-equipment\/busbar\/\">Busbar and distribution<\/a>:<\/strong> When there are several loads connected to the same battery, a busbar prevents six terminals from being crammed onto a single terminal block, which is where overheating and poor contacts occur.\n<strong><a href=\"\/en\/product-category\/electrical-equipment\/screw-terminals\/\">Terminals<\/a>:<\/strong> of exactly the right size for the cable and properly crimped. A loose terminal at 100 A heats up to the point where it melts the insulation.\n\nProtective measures in grid-connected installations\nIn the case of rooftop self-consumption, the approach changes: the following factors come into play <a href=\"\/en\/product-category\/electrical-equipment\/magneto-thermals\/\">circuit breakers<\/a>, <a href=\"\/en\/product-category\/electrical-equipment\/residual-current-circuit-breakers\/\">residual current circuit breakers<\/a> y <a href=\"\/en\/product-category\/electrical-equipment\/surge-protection\/\">surge protection<\/a> on both the DC and AC sides. In a rooftop installation, the surge arrester is not optional: a nearby storm can render the inverter inoperable.\n\nThe most common mistake\nUsing cable with too small a cross-section to save thirty euros, only to lose 5 % of output every day for fifteen years, as well as causing the wiring to overheat. Electrical components are the cheapest part of the installation and the one that causes the most problems when corners are cut.\nIf you tell us what equipment you\u2019re going to install and the cable runs, we\u2019ll tell you the exact cable cross-sections, fuses and protective devices required. <a href=\"\/en\/victron-support\/\">Technical advice<\/a> free.","link":"https:\/\/fvcomponentes.com\/en\/categoria-producto\/material-electrico\/","name":"Electrical equipment","slug":"electrical-equipment","taxonomy":"product_cat","parent":0,"meta":[],"menu_order":87,"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat\/410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"wp:post_type":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product?product_cat=410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}