{"id":4571,"date":"2026-10-16T18:53:42","date_gmt":"2026-10-16T18:53:42","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=4571"},"modified":"2026-10-16T18:53:44","modified_gmt":"2026-10-16T18:53:44","slug":"8-awg-ampacity","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/tr\/blog\/8-awg-ampacity\/","title":{"rendered":"8 AWG Ak\u0131m Ta\u015f\u0131ma Kapasitesi: Neden Hem 40 A Hem de 50 A Do\u011fru Cevaplard\u0131r"},"content":{"rendered":"<p>\u0130nternette 8 AWG kablo ak\u0131m ta\u015f\u0131ma kapasitesini ararsan\u0131z, genellikle 40, 50 veya 55 amper gibi cevaplar bulursunuz. Bu ifadeler, insanlar\u0131n ayn\u0131 tabloya at\u0131fta bulunup do\u011fru anlad\u0131klar\u0131 i\u00e7in uyumludur. Fark, bak\u0131rla ba\u011flant\u0131l\u0131 olmayan di\u011fer unsurlarda, \u00f6rne\u011fin izolasyon derecesi, terminallerin s\u0131cakl\u0131k derecesi ve serbest hava varl\u0131\u011f\u0131nda yatar.<\/p>\n<blockquote><p>K\u0131saca, 8 kalibre bak\u0131r i\u00e7in derecelendirme NEC tablosu 310.16'da g\u00f6sterildi\u011fi gibi 60 santigrat derecede yakla\u015f\u0131k 40 A, 75 santigrat derecede 50 A ve 90 santigrat derecede 55 A'd\u0131r. Kullan\u0131lacak derecelendirme, NEC kodu 110.14(c) taraf\u0131ndan belirtildi\u011fi \u00fczere devredeki en d\u00fc\u015f\u00fck derecelendirme olacakt\u0131r: \u00e7o\u011fu konut evinde, ba\u011flant\u0131 klemensleri ve kesiciler 75 derece olarak derecelendirildi\u011finden, 8 kalibre bak\u0131r boru i\u00e7inde 50 A iletken yapar. NM-B (Romex) borusunda yap\u0131lan herhangi bir kablolama, derecelendirmeyi 60 derece s\u00fctununa d\u00fc\u015f\u00fcr\u00fcr ve b\u00f6ylece 40 A iletken yapar.<\/p><\/blockquote>\n<h2>8 AWG Asl\u0131nda Nedir<\/h2>\n<p>American Wire Gauge ters \u00e7al\u0131\u015f\u0131r; say\u0131 k\u00fc\u00e7\u00fcld\u00fck\u00e7e tel b\u00fcy\u00fcr. 8 AWG, ev aral\u0131\u011f\u0131n\u0131n ortas\u0131ndad\u0131r, d\u00fczenli dal devreleri i\u00e7in kullan\u0131lan 14, 12 ve 10 AWG'nin \u00fczerindedir, ancak daha b\u00fcy\u00fck besleyiciler ve servis giri\u015fleri i\u00e7in kullan\u0131lan 6 ve 4 AWG'nin alt\u0131ndad\u0131r.<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u00d6zellik<\/th>\n<th>Bak\u0131r<\/th>\n<th>Al\u00fcminyum<\/th>\n<\/tr>\n<tr>\n<td>\u0130letken \u00e7ap\u0131<\/td>\n<td>1285 in\u00e7 (3.264 mm)<\/td>\n<td>1285 in\u00e7 (3.264 mm)<\/td>\n<\/tr>\n<tr>\n<td>Kesit alan\u0131<\/td>\n<td>51 kcmil (8.37 mm\u00b2)<\/td>\n<td>51 kcmil (8.37 mm\u00b2)<\/td>\n<\/tr>\n<tr>\n<td>75\u00a0\u00b0C'de DC diren\u00e7<\/td>\n<td>1,000 ft ba\u015f\u0131na 0.628 \u03a9<\/td>\n<td>1,000 ft ba\u015f\u0131na 1.03 \u03a9<\/td>\n<\/tr>\n<tr>\n<td>1,000 ft ba\u015f\u0131na a\u011f\u0131rl\u0131k<\/td>\n<td>Yakla\u015f\u0131k 50 lb<\/td>\n<td>Yakla\u015f\u0131k 15 lb<\/td>\n<\/tr>\n<tr>\n<td>Yayg\u0131n tipler<\/td>\n<td>THHN, THWN-2, XHHW-2, NM-B, MC, UF-B<\/td>\n<td>XHHW-2, USE-2, SER<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Her iki metal ayn\u0131 boyutta olmas\u0131na ra\u011fmen, \u00e7ok farkl\u0131 davran\u0131rlar. Al\u00fcminyumun ampasitesi, ayn\u0131 kalibre bak\u0131r telden yakla\u015f\u0131k daha azd\u0131r. Bunun nedeni, direncinin bak\u0131r\u0131n direncinden yakla\u015f\u0131k daha fazla olmas\u0131d\u0131r. Sonu\u00e7 olarak, al\u00fcminyumun end\u00fcstri k\u0131lavuzu, bak\u0131rdan iki kalibre daha k\u00fc\u00e7\u00fck kullan\u0131lmas\u0131 gerekti\u011fini \u00f6nerir. Uzun kablo hatlar\u0131nda, diren\u00e7 fark\u0131 termal s\u0131n\u0131rlamaya yakla\u015fmadan \u00f6nce voltaj d\u00fc\u015f\u00fc\u015f\u00fc olarak kendini g\u00f6sterir.<\/p>\n<p>\u0130kisi aras\u0131ndaki se\u00e7im genellikle teknikten \u00e7ok ekonomiktir ve hem tesisat\u0131n hizmet taraf\u0131nda hem de dal devresi taraf\u0131nda uzun bir ge\u00e7mi\u015fi vard\u0131r \u2014 bunun gerek\u00e7esi \u015fu a\u00e7\u0131klamada belirtilmi\u015ftir: <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/for-electric-power-transmission-copper-or-aluminium-wire-is-used\/\">neden bak\u0131r ve al\u00fcminyum g\u00fc\u00e7 iletiminde her ikisi de kullan\u0131l\u0131r<\/a>. Bir binadaki 40 veya 50 amperlik dal devresi i\u00e7in bak\u0131r normal cevapt\u0131r; al\u00fcminyum ise ampasitenin a\u011f\u0131rl\u0131k ve maliyet tasarruflar\u0131n\u0131n kalibre b\u00fcy\u00fctmeyi dengeledi\u011fi durumlarda kullan\u0131l\u0131r.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4574\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/What-8-AWG-Actually-Is.webp\" alt=\"8 AWG Asl\u0131nda Nedir\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Amperaj Tablosu ve Neden \u00dc\u00e7 S\u00fctun Var<\/h2>\n<p>Say\u0131lar, 30 \u00b0C s\u0131cakl\u0131kta ve bir boru veya kabloda \u00fc\u00e7ten fazla ak\u0131m ta\u015f\u0131yan iletken olmayan yal\u0131t\u0131ml\u0131 iletkenlerin izin verilen ampasitelerini g\u00f6steren NEC Tablosu 310.16'dan al\u0131nm\u0131\u015ft\u0131r.<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u0130letken<\/th>\n<th>60\u00a0\u00b0C (140\u00a0\u00b0F)<\/th>\n<th>75\u00a0\u00b0C (167\u00a0\u00b0F)<\/th>\n<th>90\u00a0\u00b0C (194\u00a0\u00b0F)<\/th>\n<\/tr>\n<tr>\n<td>8 AWG bak\u0131r<\/td>\n<td>40 A<\/td>\n<td>50 A<\/td>\n<td>55 A<\/td>\n<\/tr>\n<tr>\n<td>8 AWG al\u00fcminyum<\/td>\n<td>30 A<\/td>\n<td>40 A<\/td>\n<td>45 A<\/td>\n<\/tr>\n<tr>\n<td>6 AWG bak\u0131r (\u00f6l\u00e7ek i\u00e7in)<\/td>\n<td>55 A<\/td>\n<td>65 A<\/td>\n<td>75 A<\/td>\n<\/tr>\n<tr>\n<td>6 AWG al\u00fcminyum (\u00f6l\u00e7ek i\u00e7in)<\/td>\n<td>40 A<\/td>\n<td>50 A<\/td>\n<td>55 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>S\u00fctunlar gereklidir \u00e7\u00fcnk\u00fc izolasyon farkl\u0131 s\u0131cakl\u0131k dereceleriyle \u00fcretilmi\u015ftir ve iletken, beklenen s\u0131cakl\u0131\u011fa dayanabilen izolasyon sayesinde a\u015f\u0131r\u0131 \u0131s\u0131nmadan \u00f6nce daha fazla ak\u0131m ta\u015f\u0131yabilir.<\/p>\n<ul>\n<li>60 \u00b0C yal\u0131t\u0131m: TW, UF. Eski teknoloji, daha d\u00fc\u015f\u00fck s\u0131n\u0131rlar.<\/li>\n<li>75 \u00b0C yal\u0131t\u0131m: THW, THWN, XHHW, USE. D\u00fczenli kanal, ticari uygulamalar\u0131n \u0131slak alanlar\u0131.<\/li>\n<li>90 \u00b0C yal\u0131t\u0131m: THHN, THWN-2, XHHW-2, USE-2, PV kablosu. Kuru ve \u0131slak alanlar ile y\u00fcksek s\u0131cakl\u0131k \u00e7al\u0131\u015fma ko\u015fullar\u0131.<\/li>\n<\/ul>\n<p>90 \u00b0C ile ilgili vurgulanmas\u0131 gereken bir nokta, bu boyuttaki kablolarla \u00e7al\u0131\u015f\u0131rken s\u0131kl\u0131kla kar\u0131\u015f\u0131kl\u0131\u011fa yol a\u00e7mas\u0131d\u0131r \u00e7\u00fcnk\u00fc 90 \u00b0C s\u00fctunu bir derecelendirme de\u011fil, bir indirgeme (derating) temelidir ve sonland\u0131rma i\u00e7in kullan\u0131lmamal\u0131d\u0131r. Ortam s\u0131cakl\u0131\u011f\u0131 ve iletkenlerin demetlenmesinin hesaplamalar\u0131 nas\u0131l etkiledi\u011fini belirlemek i\u00e7in kullan\u0131l\u0131r ve ancak o zaman belirli sonland\u0131rmalar i\u00e7in kullan\u0131labilecek s\u0131cakl\u0131k s\u00fctununa kar\u015f\u0131 kontrol edilebilir. 55 A, 8 AWG bak\u0131r i\u00e7in t\u00fcrev bir de\u011fer olarak kullan\u0131lamaz \u00e7\u00fcnk\u00fc kodu ihlal eder. Ampasite belirlemenin ad\u0131m ad\u0131m nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131, d\u00fczeltme ve ayarlama fakt\u00f6rleri dahil olmak \u00fczere, bu rehberde ele al\u0131nmaktad\u0131r. <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/minimum-circuit-ampacity\/\">minimum devre ampasi\u011finin nas\u0131l belirlendi\u011fi<\/a>.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4575\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/wire-ampacity-the-3-columns-the-real-limits.webp\" alt=\"kablo ak\u0131m kapasitesi 3 s\u00fctun ger\u00e7ek s\u0131n\u0131rlar\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Cevab\u0131 Belirleyen Terminal Kural\u0131<\/h2>\n<p>NEC 110.14(C)\u2019ye g\u00f6re, iletken ampasitesi herhangi bir sonland\u0131rman\u0131n en d\u00fc\u015f\u00fck s\u0131cakl\u0131k derecelendirmesine g\u00f6re se\u00e7ilmelidir, iletken yal\u0131t\u0131m\u0131n\u0131n maksimum dayanabilece\u011fi s\u0131cakl\u0131\u011fa g\u00f6re de\u011fil. Ba\u015fka bir deyi\u015fle, s\u0131n\u0131rlay\u0131c\u0131 fakt\u00f6r ba\u011flant\u0131lar olup iletkenin kendisi de\u011fildir.<\/p>\n<p>Pratikte:<\/p>\n<ul>\n<li>60 \u00b0C dereceli terminaller \u2192 60 \u00b0C s\u00fctunu kullan\u0131lmal\u0131d\u0131r \u2192 bak\u0131r 8 AWG = 40 A.<\/li>\n<li>75 \u00b0C dereceli terminaller \u2192 75 \u00b0C s\u00fctunu kullan\u0131lmal\u0131d\u0131r \u2192 bak\u0131r 8 AWG = 50 A.<\/li>\n<li>90 \u00b0C dereceli terminaller \u2192 90 \u00b0C s\u00fctunu kullan\u0131lmal\u0131d\u0131r \u2192 bak\u0131r 8 AWG = 55 A \u2013 ki bu pratikte neredeyse hi\u00e7 uygulanmaz.<\/li>\n<\/ul>\n<p>100 A veya \u00fczeri derecelendirilmi\u015f ekipmanlar genellikle 75 \u00b0C dereceli sonland\u0131rmalar i\u00e7in liste al\u0131rken, 100 A alt\u0131ndaki ekipmanlar tipik olarak 60 \u00b0C dereceli sonland\u0131rmalar i\u00e7in listelenir; bu nedenle 40 A de\u011feri ortaya \u00e7\u0131kar. ABD\u2019de sat\u0131lan \u00e7o\u011fu konut devre kesici ve pano ba\u011flant\u0131 eleman\u0131 75 \u00b0C derecelidir, bu da 8 AWG kablolarla 50 A\u2019de \u00e7ok say\u0131da ger\u00e7ek uygulama i\u00e7in izin verir \u2013 tabii ki ger\u00e7ek derecelendirmeler kesici etiketi, pano listesi ve cihaz etiketindeki iddialarla kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131ysa.<\/p>\n<p>\u0130kinci 40 A de\u011feri kablo tipinden gelir. NM-B, yayg\u0131n olarak Romex olarak bilinir, 60 \u00b0C kablodur, bu da NM-B\u2019deki 8 AWG iletkenlerin, di\u011fer ba\u011flant\u0131lar daha y\u00fcksek dereceli olsa bile t\u00fcm devreyi daha d\u00fc\u015f\u00fck s\u00fctunu kullan\u0131yormu\u015f gibi s\u0131n\u0131fland\u0131raca\u011f\u0131 anlam\u0131na gelir. Sonu\u00e7 olarak, ayn\u0131 kesit bir uygulamada 40 A iletken olarak, yirmi feet \u00f6tede ise 50 A iletken olarak kullan\u0131labilir.<\/p>\n<p>Ayn\u0131 mant\u0131k \u015funu a\u00e7\u0131klar ki <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/12-gauge-wire\/\">12 AWG neredeyse her konut durumunda 20 A ile s\u0131n\u0131rland\u0131r\u0131lm\u0131\u015ft\u0131r<\/a> oysa 90 \u00b0C yal\u0131t\u0131ml\u0131 12 AWG iletken tabloda 30 A ta\u015f\u0131yabilir. 8 AWG alt\u0131ndaki de\u011ferler k\u00fc\u00e7\u00fck iletken kural\u0131 ile kilitlenmi\u015ftir; 8 AWG\u2019de ise kilitlenmemi\u015ftir, bu da bu boyutun ger\u00e7ekten kurulum detaylar\u0131na ba\u011fl\u0131 oldu\u011fu anlam\u0131na gelir.<\/p>\n<h2>Kesici Boyutland\u0131rmas\u0131: 240.4 ve Bir Sonraki Boyut Kural\u0131<\/h2>\n<p>\u00c7o\u011fu \u00e7evrimi\u00e7i rehber yanl\u0131\u015f olarak \u015funu belirtir: NEC 240.4(D) 8 AWG i\u00e7in ge\u00e7erli de\u011fildir. K\u00fc\u00e7\u00fck iletken kural\u0131 18, 16, 14, 12 ve 10 AWG i\u00e7in ge\u00e7erlidir ve maksimum de\u011ferlerin 14 AWG bak\u0131r i\u00e7in 15 A, 12 AWG bak\u0131r i\u00e7in 20 A ve 10 AWG bak\u0131r i\u00e7in 30 A oldu\u011funu belirtir. 8 AWG bu s\u0131n\u0131r\u0131 a\u015ft\u0131\u011f\u0131 i\u00e7in, NEC 240.4 kural\u0131 do\u011frudan ona uygulan\u0131r ve NEC 240.4(B) kablonun ta\u015f\u0131ma kapasitesinden sonra gelen standart a\u015f\u0131r\u0131 ak\u0131m cihaz\u0131 boyutunu kullanma hakk\u0131 tan\u0131yan genel kural taraf\u0131ndan korunur.<\/p>\n<p>75 \u00b0C s\u0131cakl\u0131ktaki 8 AWG bak\u0131r i\u00e7in hesaplamalar a\u015fa\u011f\u0131daki gibidir:<\/p>\n<ul>\n<li>Ak\u0131m ta\u015f\u0131ma kapasitesi: 50 A.<\/li>\n<li>Devre kesici boyutlar\u0131: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80.<\/li>\n<li>Sonraki standart boyut 45 A, ard\u0131ndan 50 A\u2019d\u0131r. Kablonun ak\u0131m ta\u015f\u0131ma kapasitesi 50 A oldu\u011fundan, 75 \u00b0C\u2019de 50 A devre kesici kullan\u0131labilir.<\/li>\n<\/ul>\n<p>Ancak, iki k\u0131s\u0131tlama vard\u0131r. Birincisi, NEC 240.4(D) 8 AWG kablo boyutu i\u00e7in bir s\u0131n\u0131r belirlemedi\u011finden, devre kesicinin amperaj\u0131 i\u00e7in bu veya \u015fu derecelendirmeyi do\u011frulamak sizin tek sorumlulu\u011funuzdur, bu nedenle hesaplaman\u0131za g\u00fcvenmeniz gerekir. Ayr\u0131ca, NEC 240.4(B) \u00e7oklu prizli g\u00fc\u00e7 devreleri i\u00e7in uygun de\u011fildir, bu nedenle bu ko\u015ful alt\u0131nda 8 AWG i\u00e7in 50 A devre kesici yasakt\u0131r.<\/p>\n<p>60 A\u2019lik bir devreye ihtiyac\u0131n\u0131z varsa, 8 AWG bak\u0131r kullanman\u0131n bir yolu yoktur. Devre kesicinin iki kutuplu konfig\u00fcrasyonda nerede yer ald\u0131\u011f\u0131 ve bunun devrenin geri kalan\u0131n\u0131 nas\u0131l etkiledi\u011fi ayr\u0131 bir konudur ve farklar \u015fu kar\u015f\u0131la\u015ft\u0131rmada a\u00e7\u0131klanm\u0131\u015ft\u0131r: <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/50-amp-single-pole-breaker-vs-double-pole\/\">50 amper tek kutuplu ve \u00e7ift kutuplu devre kesiciler<\/a>.<\/p>\n<h2>D\u00fc\u015f\u00fcrme: 8 AWG\u2019nin Yetersiz Kald\u0131\u011f\u0131 Durumlar<\/h2>\n<p>Tablo yaln\u0131zca maksimum \u00fc\u00e7 ak\u0131m ta\u015f\u0131yan iletken ve 30 \u00b0C ortam s\u0131cakl\u0131\u011f\u0131 \u00f6ng\u00f6r\u00fcr, ancak her iki varsay\u0131m genellikle do\u011fru de\u011fildir. 8 AWG\u2019de bu hemen bir sorun yarat\u0131r, \u00e7\u00fcnk\u00fc k\u00fc\u00e7\u00fck bir iletken yede\u011fi sizi kurtarmaz.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Durum<\/th>\n<th>Ayarlama<\/th>\n<th>8 AWG bak\u0131r sonucu<\/th>\n<\/tr>\n<tr>\n<td>4\u20136 ak\u0131m ta\u015f\u0131yan iletken<\/td>\n<td>80%<\/td>\n<td>55 A \u00d7 0.80 = 44 A<\/td>\n<\/tr>\n<tr>\n<td>7\u20139 ak\u0131m ta\u015f\u0131yan iletken<\/td>\n<td>70%<\/td>\n<td>55 A \u00d7 0.70 = 38.5 A<\/td>\n<\/tr>\n<tr>\n<td>10\u201320 ak\u0131m ta\u015f\u0131yan iletken<\/td>\n<td>50%<\/td>\n<td>55 A \u00d7 0.50 = 27.5 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00d6rne\u011fin, tablonun ilk sat\u0131r\u0131na bak\u0131ld\u0131\u011f\u0131nda, bir PVC boru i\u00e7inde d\u00f6rt adet 8 AWG THHN bak\u0131r kablo \u00e7al\u0131\u015ft\u0131r\u0131rsak, d\u00fc\u015f\u00fcr\u00fclm\u00fc\u015f ak\u0131m ta\u015f\u0131ma kapasitesi 44 A olur. Bunu 75 \u00b0C\u2019deki terminal ak\u0131m ta\u015f\u0131ma kapasitesi olan 50 A ile kar\u015f\u0131la\u015ft\u0131rd\u0131\u011f\u0131m\u0131zda, 44 A elde ederiz, bu da 40 A devre kesicimizle uygun oldu\u011fumuz anlam\u0131na gelir. \u0130letken say\u0131s\u0131n\u0131 yediye \u00e7\u0131kar\u0131rsak, d\u00fc\u015f\u00fcr\u00fclm\u00fc\u015f ak\u0131m ta\u015f\u0131ma kapasitesi 38.5 A\u2019ya d\u00fc\u015fer. Bu a\u015famada 8 AWG kablo kullanamay\u0131z ve 6 AWG kabloya ge\u00e7memiz gerekir.<\/p>\n<p>Ortam s\u0131cakl\u0131\u011f\u0131 sorunu art\u0131r\u0131r. Kablolar\u0131n ak\u0131m ta\u015f\u0131ma kapasiteleri 30 \u00b0C ortam s\u0131cakl\u0131\u011f\u0131 varsay\u0131m\u0131yla belirlenir. Daha s\u0131cak ko\u015fullarda d\u00fczeltme fakt\u00f6rleri devreye girer. S\u0131cak iklimde \u00e7at\u0131da bir boru varsa, s\u0131cakl\u0131k yakla\u015f\u0131k 50 \u00b0C\u2019ye \u00e7\u0131kar ve bu, 8 AWG ak\u0131m ta\u015f\u0131ma kapasitesini bir kademe daha d\u00fc\u015f\u00fcr\u00fcr. Son olarak, kablonun kapasitesinin 5\u2019ine kadar s\u00fcrekli y\u00fck varsa, hesaplamalar\u0131m\u0131z\u0131n sonunda hayal k\u0131r\u0131kl\u0131\u011f\u0131 yaratan sonu\u00e7larla kar\u015f\u0131la\u015fma olas\u0131l\u0131\u011f\u0131m\u0131z y\u00fcksektir.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4576\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/when-8-awg-stops-being-enough.webp\" alt=\"8 AWG&#039;nin yeterli olmad\u0131\u011f\u0131 durumlar\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Gerilim D\u00fc\u015f\u00fcm\u00fc: Teorik Olmaktan \u00c7\u0131kan K\u0131s\u0131tlama<\/h2>\n<p>Kablo boyutu se\u00e7erken belirleyici fakt\u00f6r olarak gerilim d\u00fc\u015f\u00fcm\u00fcne ba\u015fvurulmas\u0131 gereken nokta 8 AWG\u2019dir. \u00d6rne\u011fin, 75 \u00b0C\u2019deki 8 AWG bak\u0131r\u0131n DC direnci yakla\u015f\u0131k 0.628 \u03a9\/1000 ft\u2019dir. AC direnci ise daha y\u00fcksektir.<\/p>\n<p>\u015eimdi, 40 A ta\u015f\u0131yan 240 V'luk bir devre a\u015fa\u011f\u0131daki de\u011ferleri sa\u011flar: tek y\u00f6nde 100 ft mesafede, voltaj d\u00fc\u015f\u00fcm\u00fc yakla\u015f\u0131k 6.5 V veya yakla\u015f\u0131k 2.7% olur. Yani, 110 ft'den itibaren NEC'in izin verdi\u011fi maksimuma ula\u015facaks\u0131n\u0131z \u00e7\u00fcnk\u00fc dal devreleri i\u00e7in 3% s\u0131n\u0131r\u0131 \u015fiddetle tavsiye edilir.<\/p>\n<p>3% ve 5% s\u0131n\u0131rlar\u0131 yasal olarak zorunlu olmayan, ancak tavsiye edilen s\u0131n\u0131rlard\u0131r ve bu tavsiyelerin bir nedeni vard\u0131r. Voltaj 5%'ye ula\u015ft\u0131\u011f\u0131nda, bu d\u00fc\u015f\u00fck voltaj nedeniyle bir motor normal voltajdan daha fazla ak\u0131m \u00e7eker ve bu da tellerin potansiyel olarak \u0131s\u0131nmas\u0131na yol a\u00e7ar. Genellikle en s\u0131k kullan\u0131lan 8 AWG devresi, mesafeyle ba\u015fa \u00e7\u0131kmak i\u00e7in daha g\u00fc\u00e7l\u00fc teller gerektirir. B\u00fcy\u00fck bir servis i\u00e7in besleyici boyutland\u0131rmak da ayn\u0131 \u015fekilde takas i\u015flemini somutla\u015ft\u0131r\u0131r, bu rehberde oldu\u011fu gibi <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/wire-size-for-100-amp-service\/\">100 amper servis i\u00e7in kablo boyutland\u0131rma<\/a> g\u00f6sterilmektedir.<\/p>\n<h2>8 AWG'nin Ger\u00e7ekte Kullan\u0131m Alanlar\u0131<\/h2>\n<p>Malzemenin kullan\u0131mlar\u0131 derecelendirmelerden t\u00fcretilmi\u015ftir. 8 AWG bak\u0131r tel, bilinen uygulamalara g\u00f6re 40\u201350 A aral\u0131\u011f\u0131nda ak\u0131m ta\u015f\u0131mas\u0131na izin verir, bunlar aras\u0131nda:<\/p>\n<ul>\n<li>Alt paneller i\u00e7in besleyiciler. \u00d6rne\u011fin, garajda 40 veya 50 A ak\u0131m \u00e7eken alt paneli ba\u011flayan 8\/3 kablo, y\u00fck\u00fcn toplam\u0131 ve ba\u011flant\u0131 mesafesi s\u0131n\u0131rlar\u0131 a\u015fmad\u0131\u011f\u0131 s\u00fcrece;<\/li>\n<li>AC ve \u0131s\u0131 pompas\u0131 \u00fcniteleri. Bir\u00e7ok merkezi klima \u00fcnitesi, 40\/50 A'ya e\u015fit a\u015f\u0131r\u0131 ak\u0131m korumas\u0131 gerektirir;<\/li>\n<li>Elektrikli su \u0131s\u0131t\u0131c\u0131lar\u0131. 9 kW g\u00fcc\u00fcnde ve 240 volt \u00e7al\u0131\u015fan tank su \u0131s\u0131t\u0131c\u0131lar\u0131, 8\/2 kablo kullanan ve 40 A dereceli bir kesici ile donat\u0131labilir.<\/li>\n<li>Ocaklar ve duvar f\u0131r\u0131nlar\u0131. Nispeten k\u00fc\u00e7\u00fck ayr\u0131 birimler 8 AWG kablolarla beslenebilir, ancak g\u00fcn\u00fcm\u00fczde bir\u00e7ok f\u0131r\u0131n 6 AWG tel kullan\u0131m\u0131 gerektirir.<\/li>\n<li>Jenerat\u00f6rler ve transfer anahtarlar\u0131. 8\/3 SOOW ta\u015f\u0131nabilir jenerat\u00f6r kablosu 50 A giri\u015f kutusunu besler;<\/li>\n<li>Elektrikli ara\u00e7lar i\u00e7in \u015farj. Standart bir 8 AWG i\u015fi, 32 A dereceli ve 40 A kesici kullanan bir \u015farj cihaz\u0131 ile temsil edilir.<\/li>\n<li>G\u00fcne\u015f PV devreleri. Bu devre, NEC Madde 690 gereksinimlerini kar\u015f\u0131lamal\u0131d\u0131r; burada 8 AWG THHN veya PV tipi teller, kaynak ve \u00e7\u0131k\u0131\u015f i\u00e7in uygun kablo ko\u015fular\u0131 i\u00e7in yayg\u0131n olarak kullan\u0131l\u0131r.<\/li>\n<\/ul>\n<p>Bu devrelerin \u00e7o\u011funun \u00e7oklu priz devreleri yerine tek bir y\u00fck birimine adanm\u0131\u015f devreler oldu\u011funu unutmay\u0131n; bu tesad\u00fcfi de\u011fildir. Uygulamadaki fark\u0131n nedeni, adanm\u0131\u015f devrenin yaln\u0131zca bilinen tek bir y\u00fck\u00fc olmas\u0131d\u0131r, b\u00f6ylece derating ve terminal sorunlar\u0131 i\u00e7in kesin cevap sa\u011flar. \u00c7oklu priz devreleri ise b\u00f6yle kesin cevaplar vermez \u00e7\u00fcnk\u00fc iki devre tipi elektrik kodu taraf\u0131ndan farkl\u0131 \u015fekilde ele al\u0131n\u0131r.<\/p>\n<h2>Topraklama \u0130letkeni ve Kablo Konfig\u00fcrasyonlar\u0131<\/h2>\n<p>Ekipman topraklama iletkeni, topraks\u0131z iletkenlerden ziyade a\u015f\u0131r\u0131 ak\u0131m cihaz\u0131n\u0131n derecesine g\u00f6re belirlenir. 40 veya 50 A dereceli bir devre i\u00e7in, tablo 250.122 10 AWG bak\u0131r tel \u00f6nerir. Tel, s\u0131cak tellerin tel boyutuna kar\u015f\u0131l\u0131k gelmek zorunda de\u011fildir ve bu nedenle, s\u0131cak iletkenler daha b\u00fcy\u00fck oldu\u011fu i\u00e7in topraklama iletkeninin a\u015f\u0131r\u0131 boyutland\u0131r\u0131lmas\u0131 gereksizdir.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Konfig\u00fcrasyon<\/th>\n<th>\u0130letkenler<\/th>\n<th>Tipik Kullan\u0131m<\/th>\n<\/tr>\n<tr>\n<td>8\/2<\/td>\n<td>S\u0131cak, n\u00f6tr, toprak<\/td>\n<td>N\u00f6tr gereksinimi olmayan 240 V y\u00fck su \u0131s\u0131t\u0131c\u0131s\u0131<\/td>\n<\/tr>\n<tr>\n<td>8\/3<\/td>\n<td>\u0130ki s\u0131cak, n\u00f6tr, toprak<\/td>\n<td>Alt panel beslemesi, 120\/240 V kar\u0131\u015f\u0131k y\u00fckler, jenerat\u00f6r giri\u015fi<\/td>\n<\/tr>\n<tr>\n<td>8\/4<\/td>\n<td>\u00dc\u00e7 s\u0131cak, n\u00f6tr, toprak veya \u00fc\u00e7 fazl\u0131 \u00e7al\u0131\u015fma i\u00e7in d\u00f6rt iletken<\/td>\n<td>\u00dc\u00e7 fazl\u0131 ekipman ve \u00f6zel besleyiciler<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>E\u011fik \u00e7izgiden sonra gelen rakam, topraklama iletkeninden ziyade ak\u0131m\u0131 ta\u015f\u0131yan iletkenlerin say\u0131s\u0131n\u0131 g\u00f6sterir. Sonu\u00e7 olarak, 8\/2 kablosunda kullan\u0131lan tel say\u0131s\u0131 \u00fc\u00e7t\u00fcr. Y\u00fck\u00fcn n\u00f6tr iletken gerektirip gerektirmeyece\u011fini bilmek, o alt panel i\u00e7in kablo konfig\u00fcrasyonunu belirlerken hayati \u00f6neme sahiptir; \u00e7\u00fcnk\u00fc bu, 120 voltluk devreler i\u00e7in \u00e7al\u0131\u015f\u0131p \u00e7al\u0131\u015fmayaca\u011f\u0131n\u0131 belirler.<\/p>\n<h2>Herhangi bir 8 AWG i\u015fi i\u00e7in Be\u015f Ad\u0131ml\u0131 Y\u00f6ntem<\/h2>\n<ul>\n<li>Devredeki terminallerin en d\u00fc\u015f\u00fck derecesini belirleyin. Se\u00e7enekler, kesici etiketi, pano listesi ve cihaz\u0131n isim plakas\u0131d\u0131r. Bu, kullan\u0131lacak s\u00fctun olur.<\/li>\n<li>Ard\u0131ndan kablo veya iletken t\u00fcr\u00fcn\u00fc tan\u0131mlaman\u0131z gerekir. Bu t\u00fcrlerden herhangi biri NM-B ise, ak\u0131m terminallerin derecesine ra\u011fmen 60 derece santigrat s\u00fctununa d\u00fc\u015fer.<\/li>\n<li>Sonra derecelendirme i\u00e7in 90 derece santigrat de\u011ferini kullan\u0131n. Bu, bak\u0131r i\u00e7in 55 amper ve al\u00fcminyum i\u00e7in 45 amperdir. Ayr\u0131ca, iletken say\u0131s\u0131 ve ortam s\u0131cakl\u0131\u011f\u0131 d\u00fczeltme fakt\u00f6rleri dahil olmak \u00fczere d\u00fczeltme fakt\u00f6rlerini uygulamay\u0131 unutmay\u0131n.<\/li>\n<li>Derecelendirilmi\u015f de\u011fer ile terminallerin de\u011ferinden en d\u00fc\u015f\u00fck olan\u0131 se\u00e7in; bu ger\u00e7ek amperajd\u0131r.<\/li>\n<li>\u015eimdi, 240.4(B)\u2019de belirtilen en k\u00fc\u00e7\u00fck boyutu se\u00e7erek bu de\u011fere g\u00f6re kesici boyutunu belirleyin; 240.4(D)\u2019nin 8 AWG i\u00e7in ge\u00e7erli olmad\u0131\u011f\u0131n\u0131 ve 240.4(B)\u2019nin \u00e7oklu priz devreleri i\u00e7in ge\u00e7erli olmad\u0131\u011f\u0131n\u0131 unutmay\u0131n.<\/li>\n<\/ul>\n<p>Ger\u00e7ek kablo uzunlu\u011fu \u00fczerindeki voltaj d\u00fc\u015f\u00fc\u015f\u00fcn\u00fc kontrol edin ve telin iyile\u015ftirilmesi gerekiyorsa boyutunu b\u00fcy\u00fct\u00fcn. Be\u015finci maddede bir \u015fey de\u011fi\u015firse, tel yeniden hesaplanmal\u0131d\u0131r; hesaplamalar ise ayn\u0131 kalacakt\u0131r.<\/p>\n<h2>SSS<\/h2>\n<h3>8 AWG ka\u00e7 amper ta\u015f\u0131yabilir?<\/h3>\n<p>8 AWG bak\u0131r tel, NEC Tablo 310.16'ya g\u00f6re 60\u00b0C s\u0131cakl\u0131kta 40 A, 75\u00b0C s\u0131cakl\u0131kta 50 A ve 90\u00b0C s\u0131cakl\u0131kta 55 A elektrik ak\u0131m\u0131 ta\u015f\u0131yabilir. 8 AWG al\u00fcminyum tel ise 60\u00b0C s\u0131cakl\u0131kta 30 A, 75\u00b0C'de 40 A ve 90\u00b0C'de 45 A ta\u015f\u0131yabilir, ancak verilen \u00fc\u00e7 s\u0131cakl\u0131k i\u00e7in en y\u00fcksek ak\u0131m\u0131 ta\u015f\u0131yamaz. Bu durumlarda s\u0131n\u0131rlay\u0131c\u0131 fakt\u00f6r, ba\u011flant\u0131 y\u00f6ntemi, kablo malzemesi ve derating de\u011ferleri g\u00f6z \u00f6n\u00fcnde bulunduruldu\u011funda en d\u00fc\u015f\u00fck ak\u0131md\u0131r; pratik uygulamalarda, NM-B al\u00fcminyum kablo kullan\u0131ld\u0131\u011f\u0131nda bu de\u011fer genellikle yakla\u015f\u0131k 40 A, 75\u00b0C'de \u00e7al\u0131\u015fan kanal montaj\u0131 kullan\u0131ld\u0131\u011f\u0131nda ise yakla\u015f\u0131k 50 A'd\u0131r.<\/p>\n<h3>8 AWG 40 amper i\u00e7in uygun mudur?<\/h3>\n<p>Ger\u00e7ekten de, bu ak\u0131ll\u0131ca bir karard\u0131r. Bak\u0131r\u0131n 60 derece Celsius s\u0131cakl\u0131ktaki derecesi, 40 amperlik bir kesici taraf\u0131ndan beslenen 8 AWG bak\u0131r NM-B devresi durumunda uyumluluk a\u00e7\u0131s\u0131ndan NM-B kablo kullan\u0131m\u0131nda \u00f6nemli bir fakt\u00f6rd\u00fcr. \u00c7o\u011funlukla, \u00e7e\u015fitli ev tipi HVAC ekipmanlar\u0131 bu \u015fekilde derecelendirilir.<\/p>\n<h3>8 AWG 60 amper ta\u015f\u0131yabilir mi?<\/h3>\n<p>Standart kurulumlarda, 8 AWG bak\u0131r tel 90 \u00b0C s\u0131cakl\u0131kta bile 55 A'den fazla ta\u015f\u0131maz ve bu say\u0131, telin terminal kapasitesinden ziyade derating de\u011ferine uygulan\u0131r. 60 A ak\u0131m elde etmek i\u00e7in, 75 \u00b0C'de 65 A terminal kapasitesine sahip 6 AWG tel gereklidir. Bu nedenle, 8 AWG'nin 60 A ak\u0131m ta\u015f\u0131yabilece\u011fi iddias\u0131 yanl\u0131\u015f s\u00fctuna dayanmaktad\u0131r veya en iyisi 110.14(C) g\u00f6z ard\u0131 edilir.<\/p>\n<h3>8 AWG 50 amperi kar\u015f\u0131lar m\u0131?<\/h3>\n<p>Bu, ba\u011flant\u0131 derecelendirmelerinin 75 \u00b0C oldu\u011fu ve iletkenin NM-B olmad\u0131\u011f\u0131 durumlarda do\u011frudur. Tablo 310.16, 8 AWG bak\u0131r i\u00e7in 75 \u00b0C'de derecelendirmenin 50 A oldu\u011funu belirtir ve bu, standart a\u015f\u0131r\u0131 ak\u0131m cihaz\u0131 derecelendirmesine kar\u015f\u0131l\u0131k gelir. 8 AWG, 240.4(D) k\u00fc\u00e7\u00fck iletken kural\u0131nda belirtilen s\u0131n\u0131rdan daha b\u00fcy\u00fck oldu\u011fundan, \u00e7oklu priz besleyen bir dal devresi olmad\u0131\u011f\u0131 s\u00fcrece 240.4(B) uyar\u0131nca 50 A devre kesici kullan\u0131m\u0131 izinlidir. Kullan\u0131mdan \u00f6nce her zaman kesici ve pano i\u015faretlerini kontrol edin.<\/p>\n<h2>Referanslar<\/h2>\n<ol>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 NFPA 70 Ulusal Elektrik Kodu, Tablolar 310.16, 250.122 ve 310.15(C)(1), ve B\u00f6l\u00fcmler 110.14(C), 240.4 ve 690.8<\/a><\/li>\n<li><a href=\"https:\/\/www.southwire.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Southwire \u2014 bina teli i\u00e7in iletken ak\u0131m ta\u015f\u0131ma kapasitesi, diren\u00e7 ve kablo yap\u0131s\u0131 verileri<\/a><\/li>\n<li><a href=\"https:\/\/www.ecmweb.com\/\" rel=\"nofollow noopener\" target=\"_blank\">EC&amp;M Magazine \u2014 ak\u0131m ta\u015f\u0131ma kapasitesi ayar\u0131, d\u00fczeltme fakt\u00f6r\u00fc ve terminal s\u0131cakl\u0131\u011f\u0131 rehberi<\/a><\/li>\n<li><a href=\"https:\/\/www.iaei.org\/\" rel=\"nofollow noopener\" target=\"_blank\">Uluslararas\u0131 Elektrik Denet\u00e7ileri Birli\u011fi \u2014 iletken boyutland\u0131rma ve a\u015f\u0131r\u0131 ak\u0131m korumas\u0131 kodu yorumu<\/a><\/li>\n<li><a href=\"https:\/\/www.nema.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NEMA \u2014 bina teli ve kablo standartlar\u0131 ve terminal s\u0131cakl\u0131k derecelendirme uygulamas\u0131<\/a><\/li>\n<li><a href=\"https:\/\/www.grainger.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Grainger \u2014 8 AWG bina teli ve kablo montajlar\u0131 i\u00e7in g\u00fcncel ABD fiyatland\u0131rma ve teknik veri<\/a><\/li>\n<li><a href=\"https:\/\/www.eaton.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Eaton \u2014 devre kesici terminal derecelendirmeleri ve pano ba\u011flant\u0131 spesifikasyonlar\u0131<\/a><\/li>\n<li><a href=\"https:\/\/www.energy.gov\/\" rel=\"nofollow noopener\" target=\"_blank\">ABD Enerji Bakanl\u0131\u011f\u0131 \u2014 konut tesisat\u0131 ve elektrik y\u00fck\u00fc rehberi<\/a><\/li>\n<\/ol>\n<h2>Sonu\u00e7<\/h2>\n<p>8 AWG kablo, \u00fc\u00e7 termal yal\u0131t\u0131ma tabi oldu\u011fundan \u00fc\u00e7 amperaj derecesine hizmet eder; bu, kullan\u0131lacak amperaj derecesinin devrede kullan\u0131lan en zay\u0131f terminasyon ve kablo tipine g\u00f6re belirlendi\u011fi anlam\u0131na gelir. Bak\u0131r kullan\u0131ld\u0131\u011f\u0131nda, amperaj dereceleri 60 \u00b0C'de 40 A, 75 \u00b0C'de 50 A ve 90 \u00b0C'de 55 A olurken, al\u00fcminyum kablo ile dereceler 60 \u00b0C'de 30 A, 75 \u00b0C'de 40 A ve 90 \u00b0C'de 45 A'd\u0131r; bu da NM-B kablosunda kullan\u0131lan 8 AWG kablonun amperaj derecesinin 40 A oldu\u011fu, kanal i\u00e7inde yap\u0131lan tesisat i\u00e7in ise 75 derece terminasyonlarda 50 A oldu\u011fu anlam\u0131na gelir. Kablo ak\u0131m kapasitesi ile ilgilenmeden \u00f6nce terminasyon derecelerinin kontrol edilmesi gerekir, bu nedenle a\u015fa\u011f\u0131daki \u00fc\u00e7 ad\u0131m\u0131n birbiri ard\u0131na tekrarlanmas\u0131 gerekir.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>If you look for 8 AWG wire ampacity on the internet you will often find such answers as 40, 50 or 55 amps. These statements match as people refer to the same table and understand it correctly. The difference lies in other aspects which are not connected with copper such as the rating of insulation, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/comments?post=4571"}],"version-history":[{"count":3,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4571\/revisions"}],"predecessor-version":[{"id":4578,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4571\/revisions\/4578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/media\/4572"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/media?parent=4571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/categories?post=4571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/tags?post=4571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}