{"id":5037,"date":"2025-12-31T17:21:56","date_gmt":"2025-12-31T17:21:56","guid":{"rendered":"https:\/\/www.kmdpower.com\/?p=5037"},"modified":"2025-12-31T17:21:57","modified_gmt":"2025-12-31T17:21:57","slug":"battery-cable-amperage-capacity-chart","status":"publish","type":"post","link":"https:\/\/www.kmdpower.com\/cs\/news\/battery-cable-amperage-capacity-chart\/","title":{"rendered":"Diagram amp\u00e9rov\u00e9 kapacity bateriov\u00e9ho kabelu"},"content":{"rendered":"<p>Tabulka amp\u00e9rov\u00e9 kapacity bateriov\u00fdch kabel\u016f. S\u017e\u00edrav\u00e1 v\u016fn\u011b tav\u00edc\u00edho se PVC je stra\u0161idelnou p\u0159ipom\u00ednkou toho, \u017ee samotn\u00e9 dimenzov\u00e1n\u00ed kabel\u016f na bezpe\u010dnost nesta\u010d\u00ed. Vid\u011bl jsem selh\u00e1n\u00ed prvot\u0159\u00eddn\u00edch 12V stejnosm\u011brn\u00fdch syst\u00e9m\u016f jen proto, \u017ee instalat\u00e9\u0159i ignorovali pokles nap\u011bt\u00ed - kritick\u00e9 opomenut\u00ed v n\u00e1mo\u0159n\u00edch a pr\u016fmyslov\u00fdch stavb\u00e1ch, kde neplat\u00ed standardn\u00ed pravidla pro zapojen\u00ed st\u0159\u00eddav\u00e9ho proudu. Tento pr\u016fvodce poskytuje p\u0159esn\u00e9\u00a0<strong>Tabulky v souladu s normami NEC a ABYC<\/strong>\u00a0pokr\u00fdvaj\u00edc\u00ed ob\u011b z\u00e1kladn\u00ed v\u011bci:\u00a0<strong>Ampacita<\/strong>\u00a0(prevence po\u017e\u00e1r\u016f) a\u00a0<strong>Pokles nap\u011bt\u00ed<\/strong>\u00a0(zaji\u0161t\u011bn\u00ed v\u00fdkonu).<\/p><figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"813\" height=\"647\" src=\"https:\/\/www.kmdpower.com\/wp-content\/uploads\/12v-100ah-lifepo4-battery-kamada-power1.jpg\" alt=\"\" class=\"wp-image-861\"\/><\/figure><p class=\"has-text-align-center\"><strong><a href=\"https:\/\/www.kmdpower.com\/cs\/deep-cycle-6500-cycles-12v-100ah-lifepo4-battery-product\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kamada Power 12v 100Ah Lifepo4 baterie<\/a><\/strong><\/p><h2 class=\"wp-block-heading\" id=\"12v-battery-cable-ampacity-voltage-drop-charts-cheat-sheet-\">Ampacitn\u00ed tabulky a tabulky poklesu nap\u011bt\u00ed 12V bateriov\u00fdch kabel\u016f (tabulka)<\/h2><p>P\u0159i sh\u00e1n\u011bn\u00ed kabel\u016f pro modernizaci vozov\u00e9ho parku nebo pro zak\u00e1zkovou stavbu pro t\u011b\u017ek\u00e9 n\u00e1kladn\u00ed vozy pot\u0159ebujete data, kter\u00e1 lze skenovat a kter\u00e1 jsou p\u0159esn\u00e1. Rozd\u011blili jsme je do dvou tabulek, proto\u017ee dimenzov\u00e1n\u00ed pro bezpe\u010dnost a dimenzov\u00e1n\u00ed pro v\u00fdkon jsou dva r\u016fzn\u00e9 v\u00fdpo\u010dty.<\/p><h3 class=\"wp-block-heading\" id=\"max-amperage-capacity-chart-for-12v-battery-cables-safety-limits-\">Tabulka maxim\u00e1ln\u00edho proudov\u00e9ho zat\u00ed\u017een\u00ed pro 12V bateriov\u00e9 kabely (bezpe\u010dnostn\u00ed limity)<\/h3><p><strong>Kontext:<\/strong>&nbsp;Tato tabulka ud\u00e1v\u00e1 absolutn\u00ed maxim\u00e1ln\u00ed proud, kter\u00fd m\u016f\u017ee m\u011bd\u011bn\u00fd kabel p\u0159en\u00e1\u0161et, ne\u017e se izolace za\u010dne po\u0161kozovat nebo tavit. Jedn\u00e1 se o limit \"nep\u0159ekro\u010dit\".<\/p><p><em>Pozn\u00e1mka: Tyto \u00fadaje p\u0159edpokl\u00e1daj\u00ed vysoce kvalitn\u00ed m\u011bd\u011bn\u00fd kabel s&nbsp;<strong>Izola\u010dn\u00ed t\u0159\u00edda 105 \u00b0C<\/strong>&nbsp;(typick\u00e9 pro vysoce kvalitn\u00ed lodn\u00ed nebo sv\u00e1\u0159ec\u00ed akumul\u00e1torov\u00e9 kabely) pou\u017e\u00edvan\u00e9 na voln\u00e9m vzduchu. Pokud pou\u017e\u00edv\u00e1te standardn\u00ed automobilov\u00e9 vodi\u010de (\u010dasto dimenzovan\u00e9 na 60 \u00b0C nebo 80 \u00b0C) nebo svazujete vodi\u010de v hork\u00e9m motorov\u00e9m potrub\u00ed, mus\u00edte tato \u010d\u00edsla v\u00fdrazn\u011b sn\u00ed\u017eit.<\/em><\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Velikost AWG<\/strong><\/th><th><strong>Plocha (mm\u00b2)<\/strong><\/th><th><strong>Maxim\u00e1ln\u00ed proud (trval\u00fd)<\/strong><\/th><th><strong>Max. proud (p\u0159ep\u011bt\u00ed\/rozb\u011bh 5 s)<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>6 AWG<\/strong><\/td><td>13,3 mm\u00b2<\/td><td>120 amp\u00e9r\u016f<\/td><td>~200 amp\u00e9r\u016f<\/td><\/tr><tr><td><strong>4 AWG<\/strong><\/td><td>21,2 mm\u00b2<\/td><td>160 amp\u00e9r\u016f<\/td><td>~300 amp\u00e9r\u016f<\/td><\/tr><tr><td><strong>2 AWG<\/strong><\/td><td>33,6 mm\u00b2<\/td><td>210 amp\u00e9r\u016f<\/td><td>~450 amp\u00e9r\u016f<\/td><\/tr><tr><td><strong>1\/0 AWG<\/strong><\/td><td>53,5 mm\u00b2<\/td><td>285 amp\u00e9r\u016f<\/td><td>~600 amp\u00e9r\u016f<\/td><\/tr><tr><td><strong>2\/0 AWG<\/strong><\/td><td>67,4 mm\u00b2<\/td><td>330 amp\u00e9r\u016f<\/td><td>~750 amp\u00e9r\u016f<\/td><\/tr><tr><td><strong>4\/0 AWG<\/strong><\/td><td>107 mm\u00b2<\/td><td>445 amp\u00e9r\u016f<\/td><td>1000+ amp\u00e9r\u016f<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\" id=\"12v-battery-cable-size-by-length-for-3-voltage-drop\">Velikost kabelu 12V baterie podle d\u00e9lky pro 3% pokles nap\u011bt\u00ed<\/h3><p><strong>Kontext:<\/strong>\u00a0Zde v\u011bt\u0161ina instalac\u00ed selh\u00e1v\u00e1. Jen proto, \u017ee 4 AWG vodi\u010d m\u016f\u017ee\u00a0<em>bezpe\u010dn\u011b<\/em>\u00a0100 amp\u00e9r\u016f neznamen\u00e1, \u017ee dok\u00e1\u017ee tento v\u00fdkon efektivn\u011b dod\u00e1vat na vzd\u00e1lenost 20 stop. Na str\u00e1nk\u00e1ch <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/12v-lifepo4-battery\/\" target=\"_blank\" rel=\"noreferrer noopener\">12V baterie<\/a><\/strong> syst\u00e9my, odpor je nep\u0159\u00edtel.<\/p><p>U kritick\u00e9 elektroniky (m\u011bni\u010de, naviga\u010dn\u00ed syst\u00e9my, chladni\u010dky pro l\u00e9ka\u0159sk\u00e9 \u00fa\u010dely) se obecn\u011b po\u017eaduje maxim\u00e1ln\u00ed hodnota&nbsp;<strong>3% pokles nap\u011bt\u00ed<\/strong>.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Zat\u00ed\u017een\u00ed (amp\u00e9ry)<\/strong><\/th><th><strong>0-5 stop<\/strong><\/th><th><strong>5-10 stop<\/strong><\/th><th><strong>10-15 stop<\/strong><\/th><th><strong>15-20 stop<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>50A<\/strong><\/td><td>6 AWG<\/td><td>4 AWG<\/td><td>2 AWG<\/td><td>2 AWG<\/td><\/tr><tr><td><strong>100A<\/strong><\/td><td>4 AWG<\/td><td>2 AWG<\/td><td>1\/0 AWG<\/td><td>2\/0 AWG<\/td><\/tr><tr><td><strong>150A<\/strong><\/td><td>2 AWG<\/td><td>1\/0 AWG<\/td><td>2\/0 AWG<\/td><td>3\/0 AWG<\/td><\/tr><tr><td><strong>200A<\/strong><\/td><td>1\/0 AWG<\/td><td>2\/0 AWG<\/td><td>4\/0 AWG<\/td><td>4\/0 AWG<\/td><\/tr><tr><td><strong>300A<\/strong><\/td><td>2\/0 AWG<\/td><td>4\/0 AWG<\/td><td><em>Dvojit\u00fd b\u011bh<\/em><\/td><td><em>Dvojit\u00fd b\u011bh<\/em><\/td><\/tr><\/tbody><\/table><\/figure><p><em>Pozn\u00e1mka: 12V syst\u00e9my vy\u017eaduj\u00ed pro p\u0159enos stejn\u00e9ho mno\u017estv\u00ed energie exponenci\u00e1ln\u011b siln\u011bj\u0161\u00ed kabely ne\u017e 120V AC syst\u00e9my. Nesna\u017ete se zde u\u0161et\u0159it.<\/em><\/p><h2 class=\"wp-block-heading\" id=\"ampacity-vs-voltage-drop-for-12v-battery-cables-explained\">Ampacita vs. \u00fabytek nap\u011bt\u00ed pro 12V bateriov\u00e9 kabely: Vysv\u011btlen\u00ed<\/h2><p>Pokud jste pracovn\u00edk odpov\u011bdn\u00fd za zad\u00e1v\u00e1n\u00ed ve\u0159ejn\u00fdch zak\u00e1zek nebo in\u017een\u00fdr, kter\u00fd p\u0159ech\u00e1z\u00ed ze st\u0159\u00eddav\u00fdch s\u00ed\u0165ov\u00fdch syst\u00e9m\u016f na stejnosm\u011brn\u00e9 bateriov\u00e9 syst\u00e9my, je rozd\u00edl mezi ampacitou a \u00fabytkem nap\u011bt\u00ed m\u00edstem, kde doch\u00e1z\u00ed k n\u00e1kladn\u00fdm chyb\u00e1m.<\/p><h3 class=\"wp-block-heading\" id=\"ampacity-the-fire-limit-for-12v-cables-\">Ampacita (po\u017e\u00e1rn\u00ed limit pro 12V kabely)<\/h3><p><strong>Definice:<\/strong>&nbsp;Ampacita je v\u00fdhradn\u011b tepeln\u00e1 hodnota. Jedn\u00e1 se o maxim\u00e1ln\u00ed proud, kter\u00fd m\u016f\u017ee vodi\u010d trvale p\u0159en\u00e1\u0161et, ne\u017e dojde k roztaven\u00ed nebo vzn\u00edcen\u00ed izolace vlivem vnit\u0159n\u00edho tepla.<\/p><p><strong>Analogie:<\/strong>&nbsp;P\u0159edstavte si kabel jako vodovodn\u00ed potrub\u00ed. Ampacita je&nbsp;<strong>bod prasknut\u00ed<\/strong>&nbsp;tohoto potrub\u00ed. Pokud tla\u010d\u00edte p\u0159\u00edli\u0161 mnoho vody (proudu) p\u0159\u00edli\u0161 mal\u00fdm potrub\u00edm, tlak roste, a\u017e potrub\u00ed fyzicky sel\u017ee. Z elektrick\u00e9ho hlediska se dr\u00e1t chov\u00e1 jako vl\u00e1kno topinkova\u010de - roz\u017ehav\u00ed se, roztav\u00ed izolaci a m\u00e1te zkrat.<\/p><h3 class=\"wp-block-heading\" id=\"voltage-drop-the-performance-limit-for-12v-systems-\">\u00dabytek nap\u011bt\u00ed (v\u00fdkonnostn\u00ed limit pro 12V syst\u00e9my)<\/h3><p><strong>Definice:<\/strong>&nbsp;\u00dabytek nap\u011bt\u00ed je mno\u017estv\u00ed energie, kter\u00e9 se ztrat\u00ed jako teplo, kdy\u017e se elekt\u0159ina prod\u00edr\u00e1 po d\u00e9lce vodi\u010de.<\/p><p><strong>Vzorec:<\/strong>\u00dabytek nap\u011bt\u00ed = proud (I) \u00d7 odpor (R) \u00d7 d\u00e9lka<\/p><p><em>(Kde&nbsp;<strong>I<\/strong>&nbsp;je proud v amp\u00e9rech,&nbsp;<strong>R<\/strong>&nbsp;je odpor dr\u00e1tu na stopu a&nbsp;<strong>D\u00e9lka<\/strong>&nbsp;je celkov\u00e1 d\u00e9lka obvodu)<\/em><\/p><p>Pro\u010d je to d\u016fle\u017eit\u00e9:<\/p><p>Zde je re\u00e1ln\u00fd sc\u00e9n\u00e1\u0159, se kter\u00fdm se \u010dasto setk\u00e1v\u00e1me: Z\u00e1kazn\u00edk instaluje 3000W st\u0159\u00edda\u010d. Pou\u017eije kabel 4\/0, proto\u017ee podle amp\u00e9rov\u00e9 tabulky je bezpe\u010dn\u00fd pro 300 amp\u00e9r. Kabel je v\u0161ak dlouh\u00fd 15 stop.<\/p><ul class=\"wp-block-list\"><li><strong>Baterie<\/strong>\u00a0tla\u010d\u00ed 12,8 V.<\/li>\n\n<li><strong>The Wire<\/strong>\u00a0m\u00e1 na tuto vzd\u00e1lenost p\u0159\u00edli\u0161 velk\u00fd odpor a ztr\u00e1c\u00ed 1,5 V.<\/li>\n\n<li><strong>M\u011bni\u010d<\/strong>\u00a0p\u0159ij\u00edm\u00e1 pouze 11,3 V.<\/li><\/ul><p>Kdy\u017e m\u011bni\u010d p\u0159i z\u00e1t\u011b\u017ei vid\u00ed nap\u011bt\u00ed 11,3 V, jeho vnit\u0159n\u00ed logika se domn\u00edv\u00e1, \u017ee baterie um\u00edr\u00e1. Spust\u00ed \"alarm n\u00edzk\u00e9ho nap\u011bt\u00ed\" a vypne se, i kdy\u017e je baterie ve skute\u010dnosti pln\u00e1. Dr\u00e1t se neroztavil, ale syst\u00e9m selhal.<\/p><h2 class=\"wp-block-heading\" id=\"factors-affecting-12v-battery-cable-ampacity-voltage-drop\">Faktory ovliv\u0148uj\u00edc\u00ed kapacitu 12V bateriov\u00e9ho kabelu a pokles nap\u011bt\u00ed<\/h2><p>Ne ka\u017ed\u00e1 m\u011b\u010f je stejn\u00e1. P\u0159i specifikaci materi\u00e1l\u016f pro B2B zak\u00e1zku nebo projekt s vysok\u00fdmi n\u00e1roky jsou nejd\u016fle\u017eit\u011bj\u0161\u00ed t\u0159i \u00fadaje na datov\u00e9m listu.<\/p><h3 class=\"wp-block-heading\" id=\"insulation-temperature-rating-75-c-vs-105-c-\">Teplotn\u00ed hodnocen\u00ed izolace (75 \u00b0C vs. 105 \u00b0C)<\/h3><p>Ve stavebnictv\u00ed (normy NEC pro rodinn\u00e9 domy) je vodi\u010d obvykle dimenzov\u00e1n na 75 \u00b0C nebo 90 \u00b0C. V automobilov\u00e9m a n\u00e1mo\u0159n\u00edm prost\u0159ed\u00ed jsou v\u0161ak okoln\u00ed teploty vy\u0161\u0161\u00ed.<\/p><p>V\u017edy doporu\u010dujeme&nbsp;<strong>Kabel se jmenovitou teplotou 105 \u00b0C<\/strong>&nbsp;(\u010dasto ozna\u010dovan\u00e9 jako&nbsp;<strong>SGT, SGX nebo Marine UL 1426<\/strong>). Kabel s izolac\u00ed o teplot\u011b 105 \u00b0C m\u016f\u017ee bezpe\u010dn\u011b p\u0159en\u00e1\u0161et podstatn\u011b v\u011bt\u0161\u00ed proud ne\u017e kabel o teplot\u011b 75 \u00b0C se stejn\u00fdm pr\u016f\u0159ezem, proto\u017ee izolace se tak snadno neroztav\u00ed. To v\u00e1m d\u00e1v\u00e1 v\u011bt\u0161\u00ed bezpe\u010dnostn\u00ed rezervu, pokud je syst\u00e9m kr\u00e1tkodob\u011b p\u0159et\u00ed\u017een.<\/p><h3 class=\"wp-block-heading\" id=\"stranding-count-flexibility-vs-conductivity-\">Po\u010det vl\u00e1ken (flexibilita vs. vodivost)<\/h3><p>To je rozd\u00edl mezi tuh\u00fdm \"stavebn\u00edm dr\u00e1tem\" a pru\u017en\u00fdm \"kabelem baterie\".<\/p><ul class=\"wp-block-list\"><li><strong>Stavebn\u00ed dr\u00e1t (THHN):<\/strong>\u00a0Pou\u017e\u00edv\u00e1 n\u011bkolik siln\u00fdch m\u011bd\u011bn\u00fdch vl\u00e1ken. Je tuh\u00fd a n\u00e1chyln\u00fd ke ztvrdnut\u00ed p\u0159i pr\u00e1ci. P\u0159i pou\u017eit\u00ed na lodi nebo ve vozidle zp\u016fsob\u00ed neust\u00e1l\u00e9 vibrace, \u017ee se tato siln\u00e1 vl\u00e1kna nakonec zlom\u00ed na koncovk\u00e1ch.<\/li>\n\n<li><strong>Baterie\/sva\u0159ovac\u00ed kabel:<\/strong>\u00a0Pou\u017e\u00edv\u00e1 stovky (n\u011bkdy tis\u00edce) velmi jemn\u00fdch m\u011bd\u011bn\u00fdch vl\u00e1ken (nap\u0159. o pr\u016fm\u011bru 0,2 mm). Tento vysok\u00fd po\u010det vl\u00e1ken p\u016fsob\u00ed jako tlumi\u010d vibrac\u00ed. Je tak\u00e9 mnohem snaz\u0161\u00ed v\u00e9st jej skrz \u00fazk\u00e9 rohy v motorov\u00e9m prostoru nebo v prostoru pro baterii.<\/li><\/ul><h3 class=\"wp-block-heading\" id=\"ofc-vs-cca-copper-quality-matters-\">OFC vs CCA (na kvalit\u011b m\u011bdi z\u00e1le\u017e\u00ed)<\/h3><p>Toto je nejd\u016fle\u017eit\u011bj\u0161\u00ed upozorn\u011bn\u00ed v t\u00e9to p\u0159\u00edru\u010dce:&nbsp;<strong>U propojen\u00ed hlavn\u00edch bateri\u00ed se za ka\u017edou cenu vyhn\u011bte hlin\u00edku pl\u00e1tovan\u00e9mu m\u011bd\u00ed (CCA).<\/strong><\/p><p>CCA je hlin\u00edkov\u00fd dr\u00e1t s tenkou vrstvou m\u011bdi. Je levn\u011bj\u0161\u00ed a leh\u010d\u00ed, ale hlin\u00edk m\u00e1 p\u0159ibli\u017en\u011b stejnou hmotnost.&nbsp;<strong>60% vodivost m\u011bdi<\/strong>.<\/p><ul class=\"wp-block-list\"><li><strong>OFC (bezkysl\u00edkat\u00e1 m\u011b\u010f):<\/strong>\u00a0Zlat\u00fd standard. Optim\u00e1ln\u00ed vodivost a odolnost proti korozi.<\/li>\n\n<li><strong>Rizika CCA:<\/strong>\u00a0Abyste dos\u00e1hli stejn\u00e9 proudov\u00e9 zat\u00ed\u017eitelnosti jako u kabelu 1\/0 OFC, pot\u0159ebovali byste kabel 3\/0 nebo 4\/0 CCA. Pokud pou\u017eijete poddimenzovan\u00fd kabel CCA na z\u00e1klad\u011b m\u011bd\u011bn\u00fdch tabulek, vytv\u00e1\u0159\u00edte nebezpe\u010d\u00ed po\u017e\u00e1ru. Krom\u011b toho hlin\u00edk v mo\u0159sk\u00e9m prost\u0159ed\u00ed koroduje mnohem rychleji ne\u017e m\u011b\u010f, co\u017e vede ke zv\u00fd\u0161en\u00e9 odolnosti v pr\u016fb\u011bhu \u010dasu.<\/li><\/ul><h2 class=\"wp-block-heading\" id=\"step-by-step-12v-battery-wire-size-calculator\">Kalkula\u010dka velikosti vodi\u010d\u016f 12V bateri\u00ed krok za krokem<\/h2><p>Neh\u00e1dejte. Pomoc\u00ed tohoto jednoduch\u00e9ho pracovn\u00edho postupu v\u017edy spr\u00e1vn\u011b dimenzujete kabely.<\/p><p><strong>1.Ur\u010dete proud (amp\u00e9ry)<\/strong><\/p><p>Vezm\u011bte maxim\u00e1ln\u00ed trval\u00fd z\u00e1t\u011b\u017eov\u00fd v\u00fdkon a vyd\u011blte jej nap\u011bt\u00edm syst\u00e9mu (pro jistotu pou\u017eijte nejni\u017e\u0161\u00ed provozn\u00ed nap\u011bt\u00ed, obvykle 12 V nebo dokonce 10 V).<\/p><ul class=\"wp-block-list\"><li><em>P\u0159\u00edklad:<\/em>\u00a02000W m\u011bni\u010d \u00f7 12V =\u00a0<strong>166,6 A<\/strong>.<\/li><\/ul><p><strong>2.Ur\u010dete celkovou d\u00e9lku kabelu (tam a zp\u011bt!)<\/strong><\/p><p>Tady 50% lid\u00ed d\u011bl\u00e1 chyby. Elekt\u0159ina mus\u00ed putovat z baterie do z\u00e1t\u011b\u017ee a zp\u011bt.<\/p><ul class=\"wp-block-list\"><li><em>P\u0159\u00edklad:<\/em>\u00a0Pokud je m\u011bni\u010d vzd\u00e1len 10 stop od baterie, je d\u00e9lka obvodu n\u00e1sleduj\u00edc\u00ed.\u00a0<strong>20 stop<\/strong>\u00a0(10 stop pozitivn\u00ed + 10 stop negativn\u00ed).<\/li>\n\n<li>Konzultujte graf \u00fabytku nap\u011bt\u00ed<\/li><\/ul><p><strong>3.Pod\u00edvejte se na graf poklesu nap\u011bt\u00ed (graf 2 v\u00fd\u0161e).<\/strong><\/p><ul class=\"wp-block-list\"><li>Pro z\u00e1t\u011b\u017e 166 A na trase 20 stop tam a zp\u011bt (pou\u017eijte sloupec 15-20 stop) m\u016f\u017eete vid\u011bt, \u017ee\u00a0<strong>1\/0 AWG<\/strong>\u00a0m\u016f\u017ee b\u00fdt na hran\u011b, zat\u00edmco\u00a0<strong>2\/0 AWG<\/strong>\u00a0v\u00e1s bezpe\u010dn\u011b uvede do v\u00fdkonnostn\u00ed z\u00f3ny.<\/li><\/ul><p><strong>4.Vyberte kabel<\/strong><\/p><p>V\u017edy si ov\u011b\u0159te, zda v\u00e1\u0161 v\u00fdb\u011br z tabulky \u00fabytku nap\u011bt\u00ed spl\u0148uje tak\u00e9 bezpe\u010dnostn\u00ed po\u017eadavky uveden\u00e9 v tabulce amp\u00e9rick\u00fdch hodnot (tabulka 1). (V tomto p\u0159\u00edpad\u011b 2\/0 AWG bezpe\u010dn\u011b zvl\u00e1dne 330 A, tak\u017ee snadno pokryje na\u0161i z\u00e1t\u011b\u017e 166 A).<\/p><h2 class=\"wp-block-heading\" id=\"conclusion\">Z\u00e1v\u011br<\/h2><p>P\u0159i navrhov\u00e1n\u00ed nap\u00e1jec\u00edho syst\u00e9mu nen\u00ed vhodn\u00e9 \u0161et\u0159it na kabelech. \u00daspora $20 na ten\u010d\u00edm vodi\u010di m\u016f\u017ee znamenat riziko selh\u00e1n\u00ed syst\u00e9mu - nebo v hor\u0161\u00edm p\u0159\u00edpad\u011b po\u017e\u00e1r.<\/p><p>Zlat\u00e9 pravidlo 12V zapojen\u00ed je jednoduch\u00e9:&nbsp;<strong>Nejprve vypo\u010d\u00edtejte \u00fabytek nap\u011bt\u00ed.<\/strong>&nbsp;Pokud je kabel dostate\u010dn\u011b siln\u00fd, aby zabr\u00e1nil poklesu nap\u011bt\u00ed, je t\u00e9m\u011b\u0159 jist\u00e9, \u017ee je dostate\u010dn\u011b siln\u00fd, aby bezpe\u010dn\u011b zvl\u00e1dl amp\u00e9rickou kapacitu. A kdy\u017e m\u00e1te pochybnosti? Zvolte o jednu velikost siln\u011bj\u0161\u00ed. Je to levn\u00e1 pojistka pro v\u00e1\u0161 klid.<\/p><p><strong><a href=\"https:\/\/www.kmdpower.com\/cs\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kontakt Kamada Power<\/a><\/strong> n\u00e1\u0161 t\u00fdm in\u017een\u00fdr\u016f bateri\u00ed, aby navrhl <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/12v-lifepo4-battery\/\" target=\"_blank\" rel=\"noreferrer noopener\">p\u0159izp\u016fsoben\u00e1 12V baterie<\/a><\/strong> \u0158e\u0161en\u00ed na m\u00edru.<\/p><h2 class=\"wp-block-heading\" id=\"faq\">\u010cASTO KLADEN\u00c9 DOTAZY<\/h2><h3 class=\"wp-block-heading\" id=\"what-is-the-difference-between-2-0-awg-and-00-awg-\">Jak\u00fd je rozd\u00edl mezi 2\/0 AWG a 00 AWG?<\/h3><p>Nen\u00ed mezi nimi \u017e\u00e1dn\u00fd rozd\u00edl, maj\u00ed naprosto stejnou velikost. \"Two-Ought\" se \u010dasto p\u00ed\u0161e jako 2\/0 nebo 00. Li\u0161\u00ed se od&nbsp;<strong>2 AWG<\/strong>, kter\u00e1 je mnohem ten\u010d\u00ed.<\/p><h3 class=\"wp-block-heading\" id=\"can-i-use-welding-cable-for-battery-cables-\">Mohu pou\u017e\u00edt sva\u0159ovac\u00ed kabel pro kabely baterie?<\/h3><p>Ano, a mnoho profesion\u00e1l\u016f mu d\u00e1v\u00e1 p\u0159ednost. Sva\u0159ovac\u00ed kabel (\u010dasto t\u0159\u00eddy K) m\u00e1 obvykle vy\u0161\u0161\u00ed po\u010det vl\u00e1ken a pru\u017en\u00fd pry\u017eov\u00fd pl\u00e1\u0161\u0165 EPDM, kter\u00fd l\u00e9pe odol\u00e1v\u00e1 oleji, mastnot\u011b a \u0159ez\u016fm ne\u017e standardn\u00ed bateriov\u00fd kabel z PVC. Pokud se jedn\u00e1 o \u010distou m\u011b\u010f, \u010dasto p\u0159ekon\u00e1v\u00e1 standardn\u00ed specifikace bateriov\u00fdch kabel\u016f. Jen se ujist\u011bte, \u017ee izolace je dimenzov\u00e1na na prost\u0159ed\u00ed (odolnost proti olej\u016fm\/plyn\u016fm), pokud se pou\u017e\u00edv\u00e1 v motorov\u00e9m prostoru.<\/p><h3 class=\"wp-block-heading\" id=\"how-many-amps-can-a-4-awg-wire-handle-at-12-volts-\">Kolik amp\u00e9r\u016f zvl\u00e1dne vodi\u010d 4 AWG p\u0159i nap\u011bt\u00ed 12 V?<\/h3><p>Z\u00e1le\u017e\u00ed pouze na d\u00e9lce.<\/p><ul class=\"wp-block-list\"><li><strong>Pro bezpe\u010dnost (amp\u00e9rick\u00e1 kapacita):<\/strong>\u00a0Kr\u00e1tk\u00fd m\u011bd\u011bn\u00fd kabel 4 AWG bezpe\u010dn\u011b zvl\u00e1dne zhruba\u00a0<strong>135-160 amp\u00e9r\u016f<\/strong>\u00a0bez roztaven\u00ed.<\/li>\n\n<li><strong>Pro v\u00fdkon (pokles nap\u011bt\u00ed):<\/strong>\u00a0Pokud je kabel dlouh\u00fd 15 stop, m\u011bli byste tla\u010dit pouze na p\u0159ibli\u017en\u011b.\u00a0<strong>50 amp\u00e9r\u016f<\/strong>\u00a0skrze n\u011bj. Pokud je jich v\u00edce, pokles nap\u011bt\u00ed pravd\u011bpodobn\u011b zp\u016fsob\u00ed \u0161patn\u00fd chod spot\u0159ebi\u010d\u016f.<\/li><\/ul><h3 class=\"wp-block-heading\" id=\"can-i-run-two-smaller-cables-instead-of-one-large-one-\">Mohu m\u00edsto jednoho velk\u00e9ho kabelu v\u00e9st dva men\u0161\u00ed?<\/h3><p>Ano, tomu se \u0159\u00edk\u00e1 paraleln\u00ed veden\u00ed kabel\u016f. Nap\u0159\u00edklad dva kabely 1\/0 mohou teoreticky p\u0159en\u00e1\u0161et stejn\u00fd proud jako jeden kabel 4\/0. Mus\u00edte v\u0161ak zajistit, aby oba kabely byly p\u0159esn\u011b stejn\u011b dlouh\u00e9 a m\u011bly stejn\u00e9 p\u0159ipojen\u00ed. Pokud m\u00e1 jeden z kabel\u016f o n\u011bco men\u0161\u00ed odpor, \"zab\u00edr\u00e1\" proud, p\u0159eh\u0159\u00edv\u00e1 se a m\u016f\u017ee selhat, tak\u017ee druh\u00fd kabel ponese plnou z\u00e1t\u011b\u017e (a n\u00e1sledn\u011b sel\u017ee). Obvykle je bezpe\u010dn\u011bj\u0161\u00ed a \u010dist\u0161\u00ed pou\u017e\u00edt jeden spr\u00e1vn\u011b dimenzovan\u00fd kabel.<\/p>","protected":false},"excerpt":{"rendered":"<p>Tabulka amp\u00e9rov\u00e9 kapacity bateriov\u00fdch kabel\u016f. S\u017e\u00edrav\u00e1 v\u016fn\u011b tav\u00edc\u00edho se PVC je stra\u0161idelnou p\u0159ipom\u00ednkou toho, \u017ee samotn\u00e9 dimenzov\u00e1n\u00ed kabel\u016f na bezpe\u010dnost nesta\u010d\u00ed. Vid\u011bl jsem selh\u00e1n\u00ed prvot\u0159\u00eddn\u00edch 12V stejnosm\u011brn\u00fdch syst\u00e9m\u016f jen proto, \u017ee instalat\u00e9\u0159i ignorovali pokles nap\u011bt\u00ed - kritick\u00e9 opomenut\u00ed v n\u00e1mo\u0159n\u00edch a pr\u016fmyslov\u00fdch stavb\u00e1ch, kde neplat\u00ed standardn\u00ed pravidla pro zapojen\u00ed st\u0159\u00eddav\u00e9ho proudu. Tento pr\u016fvodce poskytuje p\u0159esn\u00e9 informace o NEC a...<\/p>","protected":false},"author":1,"featured_media":2945,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[19,26],"tags":[],"class_list":["post-5037","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news_catalog","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/5037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/comments?post=5037"}],"version-history":[{"count":1,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/5037\/revisions"}],"predecessor-version":[{"id":5038,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/5037\/revisions\/5038"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media\/2945"}],"wp:attachment":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media?parent=5037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/categories?post=5037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/tags?post=5037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}