{"id":2848,"date":"2026-06-24T22:32:12","date_gmt":"2026-06-24T22:32:12","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=2848"},"modified":"2026-06-24T22:32:14","modified_gmt":"2026-06-24T22:32:14","slug":"do-tandem-breakers-use-more-amps-than-normal-breakers","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/do-tandem-breakers-use-more-amps-than-normal-breakers\/","title":{"rendered":"C\u1ea7u dao \u0111\u00f4i c\u00f3 s\u1eed d\u1ee5ng nhi\u1ec1u amp h\u01a1n c\u1ea7u dao b\u00ecnh th\u01b0\u1eddng kh\u00f4ng?"},"content":{"rendered":"<p>M\u1ed9t th\u1ee3 \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c g\u1ecdi \u0111\u1ebfn Seattle b\u1edfi m\u1ed9t kh\u00e1ch h\u00e0ng c\u1ea7n th\u00eam m\u1ed9t m\u1ea1ch m\u1edbi cho v\u0103n ph\u00f2ng c\u1ee7a m\u00ecnh. Khi m\u1edf b\u1ea3ng \u0111i\u1ec7n, th\u1ee3 \u0111i\u1ec7n nh\u1eadn th\u1ea5y r\u1eb1ng kh\u00f4ng c\u00f3 khe tr\u1ed1ng n\u00e0o trong b\u1ea3ng \u0111i\u1ec7n. Th\u1ee3 \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0a ra hai l\u1ef1a ch\u1ecdn \u0111\u1ec3 th\u00eam m\u1ed9t m\u1ea1ch m\u1edbi: m\u1ed9t b\u1ea3ng ph\u1ee5 \u0111\u1eaft ti\u1ec1n ho\u1eb7c m\u1ed9t c\u1ea7u dao \u0111\u00f4i, l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn s\u1ebd chi\u1ebfm m\u1ed9t khe trong b\u1ea3ng v\u00e0 cho ph\u00e9p hai m\u1ea1ch \u0111\u1ed9c l\u1eadp \u0111\u01b0\u1ee3c \u0111\u1eb7t trong khe b\u1ea3ng \u0111\u00f3. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, ch\u1ee7 nh\u00e0 mu\u1ed1n bi\u1ebft li\u1ec7u c\u1ea7u dao \u0111\u00f4i c\u00f3 ti\u00eau th\u1ee5 nhi\u1ec1u ampe h\u01a1n c\u1ea7u dao ti\u00eau chu\u1ea9n hay kh\u00f4ng, c\u00e2u tr\u1ea3 l\u1eddi l\u00e0 \u201ckh\u00f4ng,\u201d nh\u01b0ng c\u1ea7n c\u00f3 th\u00eam gi\u1ea3i th\u00edch \u0111\u1ec3 hi\u1ec3u c\u00e1ch m\u00e0 c\u1ea7u dao \u0111\u00f4i kh\u00e1c v\u1edbi c\u1ea7u dao ti\u00eau chu\u1ea9n v\u00e0 t\u1ea1i sao c\u1ea7u dao \u0111\u00f4i kh\u00f4ng ph\u1ea3i l\u00e0 n\u01a1i m\u00e0 m\u1ee9c ampe s\u1ebd l\u00e0 m\u1ed1i quan t\u00e2m khi s\u1eed d\u1ee5ng m\u1ea1ch.<\/p>\n<p>Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0o v\u1ec1 m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i gi\u1eefa hai lo\u1ea1i c\u1ea7u dao 15 ampe (t\u1ee9c l\u00e0, c\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c nh\u01b0 nhau v\u00e0 do \u0111\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 ng\u1eaft \u1edf m\u1ee9c \u0111\u1ecbnh m\u1ee9c t\u01b0\u01a1ng \u1ee9ng l\u00e0 15 ampe). M\u1ed7i m\u1ea1ch trong c\u1ea7u dao \u0111\u00f4i \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u1edf 15 ampe, v\u00e0 n\u1ebfu c\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u1ea3i \u1edf c\u00f4ng su\u1ea5t t\u1ed1i \u0111a \u2014 c\u00f3 ngh\u0129a l\u00e0 t\u1ed5ng c\u1ed9ng 30 ampe s\u1ebd ch\u1ea3y qua c\u1ea7u dao \u0111\u00f4i (15+15) \u2014 m\u1ea1ch cho m\u1ed7i t\u1ea3i s\u1ebd b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi c\u1ea7u dao \u0111\u1ec3 ng\u1eaft \u1edf 15 ampe. B\u1ea5t k\u1ec3 m\u1ed9t m\u1ea1ch \u0111i\u1ec7n s\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u01a1n c\u1ef1c (ti\u00eau chu\u1ea9n) hay c\u1ea7u dao \u0111\u00f4i (hai m\u1ea1ch), c\u1ea7u dao \u0111\u1ec1u mang c\u00f9ng m\u1ed9t l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n v\u00e0 cung c\u1ea5p c\u00f9ng m\u1ed9t lo\u1ea1i c\u01a1 ch\u1ebf ng\u1eaft. S\u1ef1 kh\u00e1c bi\u1ec7t \u201cch\u00eca kh\u00f3a\u201d gi\u1eefa hai lo\u1ea1i l\u00e0 c\u1ea7u dao \u0111\u00f4i ch\u1ee9a 2 m\u1ea1ch c\u01a1 kh\u00ed trong m\u1ed9t v\u1ecf; do \u0111\u00f3, ch\u1ec9 m\u1ed9t v\u1ecb tr\u00ed ho\u1eb7c khe s\u1ebd \u0111\u01b0\u1ee3c chi\u1ebfm trong b\u1ea3ng \u0111\u1ec3 l\u1eafp \u0111\u1eb7t so v\u1edbi hai cho m\u1ed9t m\u1ea1ch \u0111\u01a1n ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c l\u1eafp v\u1edbi c\u1ea7u dao \u0111\u01a1n c\u1ef1c.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2850\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/06\/What-Is-a-Tandem-Breaker.webp\" alt=\"C\u1ea7u Dao \u0110\u00f4i L\u00e0 G\u00ec\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>C\u1ea7u dao \u0111\u00f4i l\u00e0 g\u00ec?<\/h2>\n<p>C\u1ea7u dao \u0111\u00f4i (th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u1ea7u dao k\u00e9p, c\u1ea7u dao \u0111\u00f4i ho\u1eb7c c\u1ea7u dao ch\u1ed3ng) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01a1n c\u1ef1c \u0111\u1ed9c l\u1eadp k\u00e9p t\u1ed3n t\u1ea1i trong m\u1ed9t v\u1ecf thi\u1ebft b\u1ecb. C\u1ea7u dao \u0111\u00f4i s\u1ebd chi\u1ebfm m\u1ed9t khe tr\u00ean thanh bus c\u1ee7a b\u1ea3ng trong khi cung c\u1ea5p hai m\u1ea1ch ri\u00eang bi\u1ec7t. M\u1ed7i m\u1ea1ch s\u1ebd c\u00f3 c\u01a1 ch\u1ebf ng\u1eaft nhi\u1ec7t v\u00e0 c\u01a1 ch\u1ebf ng\u1eaft t\u1eeb t\u00ednh ri\u00eang, \u0111\u1ea7u n\u1ed1i t\u1ea3i ri\u00eang v\u00e0 s\u1ebd ho\u1ea1t \u0111\u1ed9ng t\u1eeb hai tay c\u1ea7m ri\u00eang bi\u1ec7t. M\u1ed9t m\u1ea1ch \u0111\u00f4i c\u00f3 th\u1ec3 ng\u1eaft m\u00e0 kh\u00f4ng l\u00e0m ng\u1eaft m\u1ea1ch kh\u00e1c (t\u1ee9c l\u00e0, hai tay c\u1ea7m l\u00e0 \u0111\u1ed9c l\u1eadp). C\u1ea7u dao \u0111\u00f4i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c b\u1ea3ng khi kh\u00f4ng c\u00f3 \u0111\u1ee7 khe v\u1eadt l\u00fd c\u00f3 s\u1eb5n trong b\u1ea3ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 m\u1ed7i m\u1ea1ch ri\u00eang bi\u1ec7t c\u1ea7n thi\u1ebft, tuy nhi\u00ean c\u00e1c b\u1ea3ng n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea v\u00e0 g\u00e1n nh\u00e3n \u0111\u00fang c\u00e1ch \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u00f4i.<\/p>\n<p>M\u1ed9t c\u1ea7u dao \u0111\u01a1n c\u1ef1c \u0111i\u1ec3n h\u00ecnh <strong>c\u1ea7u dao \u0111i\u1ec7n<\/strong> l\u00e0 m\u1ed9t c\u00f4ng t\u1eafc ngu\u1ed3n hai v\u1ecb tr\u00ed c\u00f3 th\u1ec3 chi\u1ebfm m\u1ed9t khe to\u00e0n b\u1ed9 tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 ch\u1ec9 \u0111i\u1ec1u khi\u1ec3n m\u1ed9t m\u1ea1ch \u0111i\u1ec7n duy nh\u1ea5t. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1ed9t c\u1ea7u dao \u0111\u01a1n c\u1ef1c \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m m\u1ed9t tay c\u1ea7m, m\u1ed9t \u0111\u1ea7u n\u1ed1i t\u1ea3i v\u00e0 m\u1ed9t c\u01a1 ch\u1ebf ng\u1eaft. C\u1ea7u dao \u0111\u01a1n c\u1ef1c l\u00e0 c\u1ea7u dao m\u1eb7c \u0111\u1ecbnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch chi\u1ebfu s\u00e1ng v\u00e0 \u1ed5 c\u1eafm trong nh\u00e0. C\u1ea7u dao \u0111\u01a1n c\u1ef1c cung c\u1ea5p c\u00f9ng m\u1ed9t m\u1ee9c b\u1ea3o v\u1ec7 \u0111i\u1ec7n cho m\u1ea1ch c\u1ee7a n\u00f3 nh\u01b0 c\u1ea7u dao \u0111\u00f4i cung c\u1ea5p; s\u1ef1 kh\u00e1c bi\u1ec7t duy nh\u1ea5t c\u1ee7a ch\u00fang l\u00e0 c\u00e1ch th\u1ee9c m\u00e0 ch\u00fang \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i v\u1ec1 m\u1eb7t v\u1eadt l\u00fd.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2851\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/06\/Tandem-vs.-Normal-How-the-Amp-Ratings-Compare.webp\" alt=\"C\u1ea7u Dao \u0110\u00f4i so v\u1edbi C\u1ea7u Dao B\u00ecnh Th\u01b0\u1eddng So S\u00e1nh C\u00e1c X\u1ebfp H\u1ea1ng Ampe\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>C\u1ea7u dao \u0111\u00f4i so v\u1edbi C\u1ea7u dao b\u00ecnh th\u01b0\u1eddng: So s\u00e1nh c\u00e1c ch\u1ec9 s\u1ed1 Ampe<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>C\u1ea7u dao \u0111\u01a1n c\u1ef1c ti\u00eau chu\u1ea9n<\/th>\n<th>C\u1ea7u dao \u0111\u00f4i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Khe b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u00e3 chi\u1ebfm<\/strong><\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1c m\u1ea1ch \u0111\u1ed9c l\u1eadp \u0111\u01b0\u1ee3c cung c\u1ea5p<\/strong><\/td>\n<td>1<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u00e1nh gi\u00e1 Ampe cho m\u1ed7i m\u1ea1ch<\/strong><\/td>\n<td>15A ho\u1eb7c 20A \u0111i\u1ec3n h\u00ecnh<\/td>\n<td>15A ho\u1eb7c 20A \u0111i\u1ec3n h\u00ecnh cho m\u1ed7i m\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td><strong>T\u1ed5ng d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 (c\u1ea3 hai m\u1ea1ch \u0111\u1ec1u t\u1ea3i \u0111\u1ea7y)<\/strong><\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng \u2014 m\u1ea1ch \u0111\u01a1n<\/td>\n<td>T\u1ed1i \u0111a 30A ho\u1eb7c 40A t\u1ed5ng (15A + 15A ho\u1eb7c 20A + 20A)<\/td>\n<\/tr>\n<tr>\n<td><strong>Cung c\u1ea5p 240V?<\/strong><\/td>\n<td>Kh\u00f4ng (\u0111\u01a1n c\u1ef1c)<\/td>\n<td>Kh\u00f4ng \u2014 c\u1ea3 hai c\u1ef1c k\u1ebft n\u1ed1i v\u1edbi c\u00f9ng m\u1ed9t \u0111\u1ea7u n\u1ed1i bus; kh\u00f4ng c\u00f3 240V gi\u1eefa ch\u00fang<\/td>\n<\/tr>\n<tr>\n<td><strong>Chi ph\u00ed cho m\u1ed7i m\u1ea1ch<\/strong><\/td>\n<td>$5\u2013$10<\/td>\n<td>$10\u2013$20 (nh\u01b0ng cung c\u1ea5p hai m\u1ea1ch)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>M\u1ed1i quan t\u00e2m th\u1ef1c s\u1ef1 v\u1edbi c\u1ea7u dao \u0111\u00f4i: T\u1ea3i b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, kh\u00f4ng ph\u1ea3i Ampe<\/h2>\n<p>A <strong>c\u1ea7u dao \u0111\u00f4i<\/strong> kh\u00f4ng t\u1ef1 \u0111\u1ed9ng s\u1eed d\u1ee5ng nhi\u1ec1u Ampe h\u01a1n c\u1ea7u dao ti\u00eau chu\u1ea9n, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 t\u1eadp trung nhi\u1ec1u d\u00f2ng \u0111i\u1ec7n t\u1ed5ng h\u01a1n tr\u00ean m\u1ed9t \u0111\u1ea7u n\u1ed1i bus b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n duy nh\u1ea5t. Thanh bus l\u00e0 d\u1eabn kim lo\u1ea1i ph\u00e2n ph\u1ed1i \u0111i\u1ec7n cho c\u00e1c c\u1ea7u dao. M\u1ed7i \u0111\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cho m\u1ed9t d\u00f2ng \u0111i\u1ec7n nh\u1ea5t \u0111\u1ecbnh. Khi m\u1ed9t c\u1ea7u dao \u0111\u00f4i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t, hai m\u1ea1ch t\u1ea3i \u0111\u1ea7y c\u00f3 th\u1ec3 r\u00fat t\u1eeb c\u00f9ng m\u1ed9t \u0111\u1ea7u n\u1ed1i m\u00e0 l\u1ebd ra ch\u1ec9 ph\u1ee5c v\u1ee5 cho m\u1ed9t m\u1ea1ch. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ch\u1ec9 \u0111\u1ecbnh c\u00e1c khe c\u1ee5 th\u1ec3 l\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u1ea7u dao \u0111\u00f4i v\u00e0 gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng c\u1ea7u dao \u0111\u00f4i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t. Qu\u00e1 t\u1ea3i m\u1ed9t \u0111\u1ea7u n\u1ed1i bus l\u00e0 m\u1ed9t r\u1ee7i ro ch\u00e1y n\u1ed5, v\u00e0 \u0111\u00e2y l\u00e0 m\u1ed9t l\u00fd do t\u1ea1i sao m\u1ed9t ch\u1ee7 nh\u00e0 kh\u00f4ng bao gi\u1edd n\u00ean \u0111\u01a1n gi\u1ea3n l\u1ea5p \u0111\u1ea7y m\u1ecdi khe b\u1eb1ng c\u1ea7u dao \u0111\u00f4i. \u0110\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u1edbi t\u00ednh to\u00e1n t\u1ea3i x\u00e1c \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng m\u1ea1ch m\u00e0 m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 an to\u00e0n ch\u1ee9a, h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/what-size-circuit-breaker-do-i-need\/\">k\u00edch th\u01b0\u1edbc c\u1ea7u dao b\u1ea1n c\u1ea7n<\/a> bao g\u1ed3m quy tr\u00ecnh d\u1ef1a tr\u00ean NEC.<\/p>\n<h2>N\u01a1i c\u1ea7u dao \u0111\u00f4i thu\u1ed9c v\u1ec1 \u2014 v\u00e0 n\u01a1i ch\u00fang kh\u00f4ng thu\u1ed9c v\u1ec1<\/h2>\n<p>S\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u00f4i c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t c\u00e1ch \u0111\u1ec3 th\u00eam nhi\u1ec1u m\u1ea1ch v\u00e0o m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ea7y, tuy nhi\u00ean ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 \u201cgi\u1ea3i ph\u00e1p cu\u1ed1i c\u00f9ng\u201d cho vi\u1ec7c n\u00e0y. M\u1ed7i lo\u1ea1i c\u1ea7u dao c\u00f9ng v\u1edbi c\u00e1c khe n\u00e0o ch\u1ea5p nh\u1eadn c\u1ea7u dao \u0111\u00f4i \u0111\u01b0\u1ee3c ghi nh\u00e3n tr\u00ean nh\u00e3n b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n (nh\u00e3n d\u00e1n b\u00ean trong c\u1eeda b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n), m\u1ed9t c\u1ea7u dao \u0111\u00f4i trong m\u1ed9t khe kh\u00f4ng \u0111\u01b0\u1ee3c ghi nh\u00e3n nh\u01b0 v\u1eady c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng thanh bus ho\u1eb7c g\u00e2y ra r\u1ee7i ro qu\u00e1 nhi\u1ec7t. C\u1ea7u dao \u0111\u00f4i ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1c m\u1ea1ch 120 volt t\u1ee9c l\u00e0 chi\u1ebfu s\u00e1ng, \u1ed5 c\u1eafm \u0111a n\u0103ng v\u00e0 thi\u1ebft b\u1ecb nh\u1ecf, c\u1ea7u dao \u0111\u00f4i kh\u00f4ng th\u1ec3 cung c\u1ea5p \u0111i\u1ec7n cho m\u1ed9t m\u1ea1ch 240 volt v\u00ec c\u1ea3 hai c\u1ef1c c\u1ee7a c\u1ea7u dao \u0111\u00f4i k\u1ebft n\u1ed1i v\u1edbi c\u00f9ng m\u1ed9t pha (kh\u00f4ng c\u00f3 c\u1ef1c n\u00e0o k\u1ebft n\u1ed1i v\u1edbi pha kh\u00e1c). \u0110\u1ec3 cung c\u1ea5p \u0111i\u1ec7n \u1edf 240 volt, m\u1ed9t c\u1ea7u dao \u0111\u00f4i l\u00e0 c\u1ea7n thi\u1ebft (k\u1ebft n\u1ed1i v\u1edbi c\u1ea3 hai thanh bus), m\u1ed9t c\u1ea7u dao \u0111\u00f4i kh\u00f4ng th\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y.<\/p>\n<p>C\u00f4ng ty HUYU s\u1ea3n xu\u1ea5t c\u00e1c c\u1ea7u dao \u0111\u01a1n c\u1ef1c ti\u00eau chu\u1ea9n, c\u1ea7u dao \u0111\u00f4i c\u1ef1c v\u00e0 c\u1ea7u dao t\u01b0\u01a1ng th\u00edch v\u1edbi c\u1ea7u dao \u0111\u00f4i cho c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i. M\u1ed9t c\u1ea7u dao \u0111\u00f4i \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 th\u00eam kh\u1ea3 n\u0103ng m\u1ea1ch cho m\u1ed9t ng\u00f4i nh\u00e0 \u0111ang ph\u00e1t tri\u1ec3n, tuy nhi\u00ean, n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng an to\u00e0n nh\u01b0 m\u1ed9t b\u1ea3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea ho\u1eb7c g\u00e1n nh\u00e3n.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u1ea7u dao \u0111\u00f4i l\u00e0 g\u00ec?<\/h3>\n<p>M\u1ed9t c\u1ea7u dao \u0111\u00f4i c\u00f3 m\u1ed9t nh\u01b0\u1ee3c \u0111i\u1ec3m l\u1edbn; n\u00f3 \u0111\u1eb7t m\u1ed9t l\u01b0\u1ee3ng t\u1ea3i \u0111i\u1ec7n k\u1ebft h\u1ee3p l\u1edbn h\u01a1n t\u1eeb nhi\u1ec1u m\u1ea1ch kh\u00e1c nhau c\u00f9ng m\u1ed9t l\u00fac, do \u0111\u00f3 l\u00e0m t\u0103ng l\u01b0\u1ee3ng t\u1ea3i \u0111i\u1ec7n tr\u00ean m\u1ed9t \u0111\u1ea7u n\u1ed1i bus \u0111\u01a1n v\u00e0 t\u1ed5ng s\u1ed1 m\u1ea1ch b\u00ean trong b\u1ea3ng \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t d\u01b0 th\u1eeba tr\u00ean c\u00e1c thanh bus v\u00e0 khi\u1ebfn b\u1ea3ng \u0111i\u1ec7n b\u1ecb h\u1ecfng n\u1ebfu n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ban \u0111\u1ea7u \u0111\u1ec3 x\u1eed l\u00fd t\u1ea3i b\u1ed5 sung. Th\u00eam v\u00e0o \u0111\u00f3, c\u1ea7u dao \u0111\u00f4i kh\u00f4ng th\u1ec3 cung c\u1ea5p 240 volt, c\u0169ng nh\u01b0 kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e2u d\u00e0i \u0111\u1ec3 thay th\u1ebf vi\u1ec7c n\u00e2ng c\u1ea5p b\u1ea3ng \u0111i\u1ec7n n\u1ebfu t\u1ed5ng t\u1ea3i v\u01b0\u1ee3t qu\u00e1 l\u01b0\u1ee3ng t\u1ea3i \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c cho b\u1ea3ng \u0111i\u1ec7n \u0111\u00f3.<\/p>\n<h3>C\u1ea7u dao \u0111\u00f4i c\u00f3 chia s\u1ebb ampe kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng, m\u1ed9t c\u1ea7u dao \u0111\u00f4i ph\u00e2n ph\u1ed1i ampe c\u1ee7a n\u00f3 gi\u1eefa c\u1ea3 hai m\u1ea1ch, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 s\u1ebd cung c\u1ea5p 2 m\u1ea1ch v\u1edbi \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n b\u1eb1ng nhau l\u00e0 15 ho\u1eb7c 20 Amps, tuy nhi\u00ean m\u1ed7i m\u1ea1ch \u0111\u1ec1u c\u00f3 c\u01a1 ch\u1ebf ng\u1eaft ri\u00eang (C\u1ea7u dao \u0111\u00f4i 15 Amps cung c\u1ea5p 2 m\u1ea1ch ri\u00eang bi\u1ec7t 15 Amps c\u00f3 kh\u1ea3 n\u0103ng mang c\u00f9ng m\u1ed9t l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n \u2013 m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp).<\/p>\n<h3>C\u1ea7u dao \u0111\u00f4i c\u00f3 t\u1ed1t nh\u01b0 c\u1ea7u dao \u0111\u01a1n kh\u00f4ng?<\/h3>\n<p>C\u1ea7u dao \u0111\u00f4i c\u00f3 th\u1ec3 cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho c\u00e1c m\u1ea1ch 120 volt trong c\u00e1c b\u1ea3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea cho c\u1ea7u dao \u0111\u00f4i nh\u01b0 c\u00e1c c\u1ea7u dao \u0111\u01a1n c\u1ef1c ti\u00eau chu\u1ea9n. Ch\u1ee9c n\u0103ng, danh s\u00e1ch c\u1ea7u dao (UL), v\u00e0 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u01b0\u1ee3c cung c\u1ea5p cho c\u00e1c m\u1ea1ch n\u00e0y l\u00e0 gi\u1ed1ng nhau cho d\u00f9 s\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u00f4i hay c\u1ea7u dao \u0111\u01a1n c\u1ef1c ti\u00eau chu\u1ea9n. Gi\u1edbi h\u1ea1n duy nh\u1ea5t c\u1ee7a c\u1ea7u dao \u0111\u00f4i l\u00e0 l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n t\u1ed5ng m\u00e0 b\u1ea3ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 x\u1eed l\u00fd, c\u0169ng nh\u01b0 th\u1ef1c t\u1ebf r\u1eb1ng ch\u00fang ch\u1ec9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng tr\u00ean c\u00e1c m\u1ea1ch 120 volt.<\/p>\n<h3>B\u1ea1n c\u00f3 th\u1ec3 l\u1ea5y 240 t\u1eeb m\u1ed9t c\u1ea7u dao \u0111\u00f4i kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng. C\u1ea7u dao \u0111\u00f4i cung c\u1ea5p m\u1ed9t c\u1eb7p m\u1ea1ch 120 volt tr\u00ean c\u00f9ng m\u1ed9t pha. V\u00ec c\u1ea3 hai c\u1ef1c \u0111\u1ec1u \u0111\u01b0\u1ee3c n\u1ed1i v\u00e0o c\u00f9ng m\u1ed9t \u0111\u1ea7u n\u1ed1i bus, \u0111i\u1ec7n \u00e1p gi\u1eefa ch\u00fang l\u00e0 kh\u00f4ng c\u00f3. M\u1ed9t m\u1ea1ch 240 volt c\u1ea7n m\u1ed9t c\u1ea7u dao \u0111\u00f4i c\u1ef1c tr\u1ea3i qua m\u1ed9t c\u1eb7p khe li\u1ec1n k\u1ec1, cung c\u1ea5p quy\u1ec1n truy c\u1eadp v\u00e0o hai thanh bus.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.eaton.com\" rel=\"nofollow noopener\" target=\"_blank\">Eaton \u2014 C\u1ea7u Dao D\u00e2n D\u1ee5ng<\/a> \u2014 D\u1eef li\u1ec7u k\u1ef9 thu\u1eadt v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7u dao \u0111\u00f4i v\u00e0 c\u1ea7u dao ti\u00eau chu\u1ea9n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch b\u1ea3ng \u0111i\u1ec7n.<\/li>\n<li><a href=\"https:\/\/www.se.com\" rel=\"nofollow noopener\" target=\"_blank\">Schneider Electric \u2014 Trung T\u00e2m T\u1ea3i Square D<\/a> \u2014 Y\u00eau c\u1ea7u g\u00e1n nh\u00e3n b\u1ea3ng \u0111i\u1ec7n v\u00e0 h\u01b0\u1edbng d\u1eabn \u1ee9ng d\u1ee5ng c\u1ea7u dao \u0111\u00f4i.<\/li>\n<li><a href=\"https:\/\/www.leviton.com\" rel=\"nofollow noopener\" target=\"_blank\">Leviton \u2014 Th\u00f4ng Tin K\u1ef9 Thu\u1eadt Trung T\u00e2m T\u1ea3i v\u00e0 C\u1ea7u Dao<\/a> \u2014 T\u00e0i li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 c\u00e1c lo\u1ea1i c\u1ea7u dao, \u0111\u1ecbnh m\u1ee9c thanh bus v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch b\u1ea3ng \u0111i\u1ec7n.<\/li>\n<li><a href=\"https:\/\/www.familyhandyman.com\" rel=\"nofollow noopener\" target=\"_blank\">Family Handyman \u2014 Gi\u1ea3i Th\u00edch C\u1ea7u Dao \u0110\u00f4i<\/a> \u2014 H\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf cho ch\u1ee7 nh\u00e0 v\u1ec1 khi n\u00e0o v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u00f4i.<\/li>\n<\/ul>\n<p>A <strong>c\u1ea7u dao \u0111\u00f4i<\/strong> kh\u00f4ng s\u1eed d\u1ee5ng nhi\u1ec1u ampe h\u01a1n m\u1ed9t c\u1ea7u dao b\u00ecnh th\u01b0\u1eddng. N\u00f3 cung c\u1ea5p hai m\u1ea1ch \u0111\u1ed9c l\u1eadp trong m\u1ed9t th\u00e2n, m\u1ed7i m\u1ea1ch c\u00f3 x\u1ebfp h\u1ea1ng ampe ri\u00eang, m\u1ed7i m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9c l\u1eadp. S\u1ef1 c\u1ea9n tr\u1ecdng v\u1edbi c\u00e1c c\u1ea7u dao \u0111\u00f4i kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ec1 m\u1ee9c ti\u00eau th\u1ee5 ampe c\u1ee7a c\u1ea7u dao \u2014 m\u00e0 l\u00e0 v\u1ec1 vi\u1ec7c li\u1ec7u thanh bus c\u1ee7a b\u1ea3ng v\u00e0 t\u00ednh to\u00e1n t\u1ed5ng t\u1ea3i c\u00f3 th\u1ec3 an to\u00e0n ch\u1ee9a c\u00e1c m\u1ea1ch b\u1ed5 sung hay kh\u00f4ng. Khi b\u1ea3ng \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea cho c\u00e1c c\u1ea7u dao \u0111\u00f4i, v\u00e0 t\u1ed5ng t\u1ea3i n\u1eb1m trong x\u1ebfp h\u1ea1ng c\u1ee7a b\u1ea3ng, m\u1ed9t c\u1ea7u dao \u0111\u00f4i l\u00e0 m\u1ed9t c\u00e1ch an to\u00e0n, ti\u1ebft ki\u1ec7m \u0111\u1ec3 th\u00eam c\u00e1c m\u1ea1ch m\u00e0 kh\u00f4ng ph\u1ea3i ch\u1ecbu chi ph\u00ed v\u00e0 s\u1ef1 gi\u00e1n \u0111o\u1ea1n c\u1ee7a vi\u1ec7c thay th\u1ebf b\u1ea3ng. HUYU cung c\u1ea5p c\u00e1c c\u1ea7u dao \u0111\u00f4i v\u00e0 c\u1ea7u dao ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u ch\u1ee9ng nh\u1eadn c\u1ee7a c\u00e1c b\u1ea3ng m\u00e0 ch\u00fang ph\u00f9 h\u1ee3p, v\u00ec c\u1ea7u dao \u0111\u00fang trong khe \u0111\u00fang l\u00e0 quy\u1ebft \u0111\u1ecbnh b\u1ea3o v\u1ec7 \u0111\u01a1n gi\u1ea3n v\u00e0 c\u01a1 b\u1ea3n nh\u1ea5t trong b\u1ea5t k\u1ef3 l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n n\u00e0o.<\/p>\n<div id=\"zsw-popper-container-1811\"><\/div>","protected":false},"excerpt":{"rendered":"<p>An electrician was called to Seattle by a customer needing to add a new circuit for his office. Upon opening the electrical panel, the electrician noted that there were no open slots in the electrical panel. The electrician offered two options for adding a new circuit: an expensive subpanel or a tandem breaker, which is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2849,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2848","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/comments?post=2848"}],"version-history":[{"count":1,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2848\/revisions"}],"predecessor-version":[{"id":2852,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2848\/revisions\/2852"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/2849"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=2848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=2848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=2848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}