{"id":3831,"date":"2026-08-18T16:03:08","date_gmt":"2026-08-18T16:03:08","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=3831"},"modified":"2026-08-19T12:14:32","modified_gmt":"2026-08-19T12:14:32","slug":"200-amp-service-wire-size","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/200-amp-service-wire-size\/","title":{"rendered":"K\u00edch th\u01b0\u1edbc D\u00e2y D\u1ecbch v\u1ee5 200 Amp"},"content":{"rendered":"<p>Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n ph\u00e1t hi\u1ec7n b\u1ea3ng \u0111i\u1ec7n \u0111\u00e3 \u0111\u1ea7y, v\u00e0 ki\u1ec3m tra vi\u00ean x\u00e1c \u0111\u1ecbnh d\u1ecbch v\u1ee5 qu\u00e1 nh\u1ecf, ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n chu\u1ea9n b\u1ecb x\u00e2y d\u1ef1ng m\u1ed9t t\u00f2a nh\u00e0 v\u00e0 mu\u1ed1n bi\u1ebft vi\u1ec7c l\u1eafp \u0111\u1eb7t xe \u0111i\u1ec7n v\u00e0 b\u01a1m nhi\u1ec7t cho ng\u00f4i nh\u00e0 c\u1ee7a b\u1ea1n l\u00e0 m\u1edbi \u0111\u1ec3 kh\u00f4ng g\u1eb7p v\u1ea5n \u0111\u1ec1 g\u00ec, b\u1ea1n s\u1ebd th\u1ea5y r\u1eb1ng c\u00e2u tr\u1ea3 l\u1eddi cho c\u00e2u h\u1ecfi \u201ck\u00edch th\u01b0\u1edbc d\u00e2y n\u00e0o ph\u00f9 h\u1ee3p cho d\u1ecbch v\u1ee5 200 amp\u201d kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t con s\u1ed1 c\u1ee5 th\u1ec3, v\u00e0 n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i v\u00e0 ki\u1ec3u t\u00f2a nh\u00e0 (nguy\u00ean t\u1eafc 83% \u0111\u01b0\u1ee3c bi\u1ebft r\u1ed9ng r\u00e3i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong tr\u01b0\u1eddng h\u1ee3p nh\u00e0 \u1edf \u2013 xem x\u00e9t B\u1ea3ng NEC 310.12), c\u00e1c t\u00e0i s\u1ea3n th\u01b0\u01a1ng m\u1ea1i (m\u1ecdi th\u1ee9 li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n \u00e1p 310.16 c\u0169ng \u0111\u01b0\u1ee3c xem x\u00e9t), v\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u1ee7a c\u00e1p (\u0111\u1ed3ng ho\u1eb7c nh\u00f4m), c\u0169ng nh\u01b0 kho\u1ea3ng c\u00e1ch c\u1ee7a c\u00e1p.<\/p>\n<blockquote><p>T\u00f3m l\u1ea1i, NEC 310.12 quy \u0111\u1ecbnh r\u1eb1ng m\u1ed9t ng\u00f4i nh\u00e0 v\u1edbi d\u1ecbch v\u1ee5 200A g\u1ed3m 120\/240V c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u00e2y \u0111\u1ed3ng 2\/0 AWG v\u00e0 d\u00e2y nh\u00f4m 4\/0 AWG trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n. N\u00f3i chung, b\u1ea5t c\u1ee9 khi n\u00e0o c\u1ea7n d\u1ecbch v\u1ee5 ba pha 200A m\u00e0 kh\u00f4ng \u00e1p d\u1ee5ng quy t\u1eafc 83%, n\u00ean s\u1eed d\u1ee5ng c\u00e1c quy \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1eb7t ra trong B\u1ea3ng NEC 310.16. Theo B\u1ea3ng NEC 310.16, c\u00e1c lo\u1ea1i d\u00e2y \u0111\u1ed3ng 3\/0 kh\u00e1c nhau ho\u1eb7c d\u00e2y d\u1eabn nh\u00f4m 250kcmil ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 75 \u0111\u1ed9 C. \u0110\u1ed3ng th\u1eddi, c\u0169ng quan tr\u1ecdng \u0111\u1ec3 xem x\u00e9t y\u00eau c\u1ea7u chi\u1ec1u d\u00e0i ch\u1ea1y d\u00e2y c\u1ee7a ti\u1ec7n \u00edch v\u00e0 y\u00eau c\u1ea7u c\u1ee7a ki\u1ec3m tra vi\u00ean \u0111\u1ecba ph\u01b0\u01a1ng.<\/p><\/blockquote>\n<h2>C\u00e2u tr\u1ea3 l\u1eddi tr\u1ef1c ti\u1ebfp: K\u00edch th\u01b0\u1edbc d\u00e2y cho d\u1ecbch v\u1ee5 200A<\/h2>\n<p>\u0110\u00e2y l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi trung th\u1ef1c, \u0111\u1ea7y \u0111\u1ee7 trong m\u1ed9t b\u1ea3ng. C\u00f3 hai quy t\u1eafc kh\u00e1c nhau, v\u00e0 quy t\u1eafc n\u00e0o \u00e1p d\u1ee5ng ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i t\u00f2a nh\u00e0:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3832\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/Wire-Size-for-200A-Service.webp\" alt=\"K\u00edch th\u01b0\u1edbc d\u00e2y cho d\u1ecbch v\u1ee5 200A\" width=\"1448\" height=\"1086\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>K\u1ecbch b\u1ea3n<\/th>\n<th>\u0110\u1ed3ng<\/th>\n<th>Nh\u00f4m<\/th>\n<th>C\u01a1 s\u1edf m\u00e3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Nh\u00e0 \u1edf d\u00e2n c\u01b0<\/strong> (\u0111\u01a1n pha 120\/240V, h\u1ea7u h\u1ebft c\u00e1c nh\u00e0)<\/td>\n<td><strong>2\/0 AWG<\/strong><\/td>\n<td><strong>4\/0 AWG<\/strong><\/td>\n<td>NEC 310.12 (quy t\u1eafc 83%)<\/td>\n<\/tr>\n<tr>\n<td><strong>Th\u01b0\u01a1ng m\u1ea1i \/ c\u00f4ng nghi\u1ec7p<\/strong> (\u0111\u01a1n pha ho\u1eb7c ba pha)<\/td>\n<td><strong>3\/0 AWG<\/strong> (t\u1ed1i thi\u1ec3u)<\/td>\n<td><strong>250 kcmil<\/strong> (t\u1ed1i thi\u1ec3u)<\/td>\n<td>NEC 310.16 (\u0111\u1ea7y \u0111\u1ee7 c\u00f4ng su\u1ea5t)<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ecbch v\u1ee5 ba pha 200A<\/strong> (b\u1ea5t k\u1ef3 lo\u1ea1i s\u1eed d\u1ee5ng n\u00e0o)<\/td>\n<td><strong>3\/0 AWG<\/strong> (t\u1ed1i thi\u1ec3u)<\/td>\n<td><strong>250 kcmil<\/strong> (t\u1ed1i thi\u1ec3u)<\/td>\n<td>NEC 310.16 (kh\u00f4ng ngo\u1ea1i l\u1ec7 nh\u00e0 \u1edf)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00f3 ba \u0111i\u1ec3m l\u00e0m r\u00f5 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c n\u00eau ra:<\/p>\n<ul>\n<li>D\u00e2y 2 AWG kh\u00f4ng \u0111\u1ee7 cho d\u00e2y 200A v\u00ec \u1edf 75\u00b0C, \u0111\u1ecbnh m\u1ee9c d\u00e2y 2 AWG ch\u1ec9 l\u00ean \u0111\u1ebfn 115A. Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho d\u00e2y 125A.<\/li>\n<li>D\u00e2y 1\/0 c\u0169ng kh\u00f4ng \u0111\u1ee7 cho d\u1ecbch v\u1ee5 200A v\u00ec \u0111\u1ecbnh m\u1ee9c d\u00e2y 1\/0 ch\u1ec9 l\u00ean \u0111\u1ebfn 150A.<\/li>\n<li>C\u00e1c k\u00edch th\u01b0\u1edbc d\u00e2y tr\u00ean \u00e1p d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u1ebfn 75\u00b0C v\u00e0 s\u1eed d\u1ee5ng d\u00e2y d\u1eabn nh\u00f4m \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u00fang c\u00e1ch.<\/li>\n<\/ul>\n<h2>NEC 310.12 &amp; Quy t\u1eafc 83% (D\u1ecbch v\u1ee5 nh\u00e0 \u1edf)<\/h2>\n<p>M\u00e3 NEC 310.12, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn r\u1ed9ng r\u00e3i v\u1edbi t\u00ean g\u1ecdi \u201cquy t\u1eafc 83%,\u201d l\u00e0 \u0111i\u1ec1u kho\u1ea3n quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u1ecbch v\u1ee5 \u0111i\u1ec7n 200A cho nh\u00e0 \u1edf d\u00e2n c\u01b0. N\u00f3 quy \u0111\u1ecbnh r\u1eb1ng \u0111\u1ed1i v\u1edbi nh\u00e0 m\u1ed9t gia \u0111\u00ecnh (c\u0169ng nh\u01b0 c\u00e1c c\u0103n h\u1ed9 ri\u00eang bi\u1ec7t trong c\u00e1c t\u00f2a nh\u00e0 \u0111a gia \u0111\u00ecnh) ch\u1ea1y tr\u00ean h\u1ec7 th\u1ed1ng 120\/240V, k\u00edch th\u01b0\u1edbc d\u00e2y d\u1ecbch v\u1ee5 v\u00e0 d\u00e2y d\u1eabn cho t\u1ea3i t\u1ed1i \u0111a \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh ch\u1ec9 b\u1eb1ng 83% c\u1ee7a t\u1ed5ng t\u1ea3i.<\/p>\n<p>T\u1ea1i sao m\u00e3 l\u1ea1i d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0y? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m trong k\u1ebft qu\u1ea3 c\u1ee7a nhi\u1ec1u nghi\u00ean c\u1ee9u: qua nhi\u1ec1u th\u1eadp k\u1ef7, k\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng c\u00f4ng su\u1ea5t t\u1ed1i \u0111a m\u00e0 m\u1ed9t ng\u00f4i nh\u00e0 y\u00eau c\u1ea7u ch\u1ec9 kho\u1ea3ng 83% c\u1ee7a t\u1ea3i \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3. N\u00f3i c\u00e1ch kh\u00e1c, kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng th\u1eddi.<\/p>\n<p>To\u00e1n h\u1ecdc li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u00ecm gi\u00e1 tr\u1ecb c\u1ea7n thi\u1ebft: 200 \u00f7 0.83 = 241A. Khi nh\u00ecn theo c\u00e1ch n\u00e0y, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng c\u00e1p \u0111\u1ed3ng 2\/0 (175A \u1edf 75\u00b0C \u00d7 1\/0.83 = 211A tr\u01b0\u1edbc khi l\u00e0m tr\u00f2n) v\u00e0 nh\u00f4m 4\/0 (180A \u1edf 75\u00b0C \u00d7 1\/0.83 = 217A) s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao d\u1ecbch v\u1ee5 \u0111i\u1ec7n 2\/0 \u0111\u1ed3ng ho\u1eb7c 4\/0 nh\u00f4m l\u00e0 ti\u00eau chu\u1ea9n trong c\u00e1c ng\u00f4i nh\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ea5u d\u00e2y b\u1eb1ng h\u1ec7 th\u1ed1ng 200A.<\/p>\n<p>C\u00e1c gi\u1edbi h\u1ea1n sau \u00e1p d\u1ee5ng cho m\u00e3 83%:<\/p>\n<ul>\n<li>C\u00e1c c\u00f4ng tr\u00ecnh th\u01b0\u01a1ng m\u1ea1i nh\u01b0 v\u0103n ph\u00f2ng ho\u1eb7c kho h\u00e0ng kh\u00f4ng c\u00f3 s\u1ef1 gi\u1ea3m t\u1ea3i trong t\u00ednh to\u00e1n t\u1ea3i.<\/li>\n<li>H\u1ec7 th\u1ed1ng ba pha kh\u00f4ng tu\u00e2n th\u1ee7 quy t\u1eafc 310.12 m\u00e0 ph\u1ea3i theo B\u1ea3ng \u0111\u1ea7y \u0111\u1ee7 310.16.<\/li>\n<li>C\u00e1c feeder \u0111\u1ebfn c\u00e1c b\u1ea3ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c quy t\u1eafc truy\u1ec1n th\u1ed1ng \u0110i\u1ec1u 215\/310.16.<\/li>\n<\/ul>\n<h2>NEC 310.16: B\u1ea3ng Ampacity \u0111\u1ea7y \u0111\u1ee7 (Th\u01b0\u01a1ng m\u1ea1i &amp; 3 Pha)<\/h2>\n<p>Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7 cho nh\u00e0 \u1edf kh\u00f4ng \u00e1p d\u1ee5ng, k\u00edch th\u01b0\u1edbc c\u1ee7a d\u00e2y d\u1eabn d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng b\u1ea3ng c\u00f4ng su\u1ea5t d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y \u0111\u1ee7, c\u1ee5 th\u1ec3 l\u00e0 NEC 310.16, trong khi c\u1ed9t 75\u00b0C \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00ec c\u00e1c \u0111\u1ea7u n\u1ed1i c\u1ee7a thi\u1ebft b\u1ecb d\u1ecbch v\u1ee5 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i \u1edf 75\u00b0C. \u0110\u1ed1i v\u1edbi m\u1ee5c \u0111\u00edch 200A:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3834\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/NEC-310.16-The-Full-Ampacity-Table.webp\" alt=\"NEC 310.16: B\u1ea3ng Ampacity \u0111\u1ea7y \u0111\u1ee7\" width=\"1448\" height=\"1086\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>D\u00e2y d\u1eabn<\/th>\n<th>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c @ 75\u00b0C<\/th>\n<th>Ph\u00f9 h\u1ee3p cho 200A?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed3ng 1 AWG<\/td>\n<td>130 A<\/td>\n<td>Kh\u00f4ng (d\u1ecbch v\u1ee5 150A)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 1\/0<\/td>\n<td>150 A<\/td>\n<td>Kh\u00f4ng (d\u1ecbch v\u1ee5 150A)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 2\/0<\/td>\n<td>175 A<\/td>\n<td>Kh\u00f4ng theo 310.16 (ch\u1ec9 theo 310.12)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed3ng 3\/0<\/strong><\/td>\n<td>200 A<\/td>\n<td><strong>C\u00f3 \u2014 t\u1ed1i thi\u1ec3u<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 4\/0<\/td>\n<td>230 A<\/td>\n<td>C\u00f3 (d\u01b0 margin)<\/td>\n<\/tr>\n<tr>\n<td>250 kcmil nh\u00f4m<\/td>\n<td>205 A<\/td>\n<td><strong>C\u00f3 \u2014 t\u1ed1i thi\u1ec3u<\/strong><\/td>\n<\/tr>\n<tr>\n<td>300 kcmil nh\u00f4m<\/td>\n<td>230 A<\/td>\n<td>C\u00f3 (d\u01b0 margin)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110i\u1ec3m ch\u00ednh l\u00e0 d\u00e2y \u0111\u1ed3ng 2\/0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng, trong khi n\u00f3 kh\u00f4ng \u0111\u1ee7 cho \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i v\u1edbi d\u00f2ng \u0111i\u1ec7n 200A, v\u00ec v\u1eady c\u00e2u h\u1ecfi n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o quy chu\u1ea9n ph\u00f9 h\u1ee3p. \u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c hi\u1ec3u l\u1ea7m khi m\u1ecdi ng\u01b0\u1eddi th\u1ea5y 200A = \u0111\u1ed3ng 2\/0 tr\u00ean gi\u1ea5y v\u00e0 s\u1eed d\u1ee5ng n\u00f3 trong c\u1eeda h\u00e0ng v\u00e0 v\u0103n ph\u00f2ng.<\/p>\n<h2>D\u1ecbch v\u1ee5 Ba Pha 200 Amp: K\u00edch Th\u01b0\u1edbc D\u00e2y N\u00e0o?<\/h2>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p d\u1ecbch v\u1ee5 ba pha 200A ho\u1eb7c l\u1eafp \u0111\u1eb7t th\u01b0\u01a1ng m\u1ea1i 208Y\/120V ho\u1eb7c 480Y\/277V, quy t\u1eafc 83% cho nh\u00e0 \u1edf kh\u00f4ng \u00e1p d\u1ee5ng. Ch\u00fang ta s\u1ebd s\u1eed d\u1ee5ng ampacity NEC 310.16 100% \u1edf 75\u00b0C: \u0110\u1ed3ng t\u1ed1i thi\u1ec3u n\u00ean l\u00e0 3\/0 AWG (200A) trong khi nh\u00f4m t\u1ed1i thi\u1ec3u l\u00e0 250 kcmil (205A).<\/p>\n<p>H\u1ea7u h\u1ebft k\u1ef9 s\u01b0 s\u1ebd khuy\u1ebfn ngh\u1ecb d\u00e2y \u0111\u1ed3ng 4\/0 ho\u1eb7c d\u00e2y nh\u00f4m 300 kcmil cho l\u1eafp \u0111\u1eb7t ba pha 200A v\u00ec l\u00fd do an to\u00e0n, nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai. H\u00e3y nh\u1edb r\u1eb1ng h\u1ec7 th\u1ed1ng ba pha c\u00f3 ba d\u00e2y d\u1eabn kh\u00f4ng n\u1ed1i \u0111\u1ea5t (t\u1ea5t c\u1ea3 c\u00f9ng lo\u1ea1i); khi n\u00f3i \u0111\u1ebfn d\u00e2y trung t\u00ednh (n\u1ebfu trong h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n lo\u1ea1i 208Y\/120V c\u00f3 d\u00e2y n\u00e0y), n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m k\u00edch th\u01b0\u1edbc theo quy chu\u1ea9n nh\u01b0ng d\u00e2y kh\u00f4ng n\u1ed1i \u0111\u1ea5t ph\u1ea3i tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 quy t\u1eafc ampacity. Lu\u00f4n ki\u1ec3m tra v\u1edbi c\u00f4ng ty ti\u1ec7n \u00edch v\u1ec1 y\u00eau c\u1ea7u d\u1ecbch v\u1ee5 c\u1ee7a h\u1ecd v\u00ec h\u1ecd c\u00f3 th\u1ec3 c\u00f3 m\u1ee9c t\u1ed1i thi\u1ec3u ri\u00eang do h\u1ecd ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111o \u0111\u1ebfm.<\/p>\n<h2>\u0110\u1ed3ng so v\u1edbi Nh\u00f4m: N\u00ean Ch\u1ecdn Lo\u1ea1i N\u00e0o?<\/h2>\n<p>C\u1ea3 hai \u0111\u1ec1u tu\u00e2n th\u1ee7 quy chu\u1ea9n cho d\u1ecbch v\u1ee5 200A; l\u1ef1a ch\u1ecdn ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean kinh t\u1ebf v\u00e0 m\u1ed9t v\u00e0i quy t\u1eafc l\u1eafp \u0111\u1eb7t:<\/p>\n<table>\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>\u0110\u1ed3ng (2\/0 d\u00e2n d\u1ee5ng \/ 3\/0 th\u01b0\u01a1ng m\u1ea1i)<\/th>\n<th>Nh\u00f4m (4\/0 d\u00e2n d\u1ee5ng \/ 250 kcmil th\u01b0\u01a1ng m\u1ea1i)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chi ph\u00ed t\u01b0\u01a1ng \u0111\u1ed1i<\/td>\n<td>C\u01a1 b\u1ea3n (\u0111\u1eaft)<\/td>\n<td>Kho\u1ea3ng 1\/3 chi ph\u00ed v\u1eadt li\u1ec7u c\u1ee7a \u0111\u1ed3ng \u1edf c\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y<\/td>\n<\/tr>\n<tr>\n<td>Ampacity theo k\u00edch th\u01b0\u1edbc<\/td>\n<td>Cao h\u01a1n<\/td>\n<td>C\u1ea7n l\u1edbn h\u01a1n m\u1ed9t \u0111\u1ebfn hai k\u00edch c\u1ee1<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng &amp; x\u1eed l\u00fd<\/td>\n<td>N\u1eb7ng, c\u1ee9ng<\/td>\n<td>Nh\u1eb9 h\u01a1n, d\u1ec5 k\u00e9o<\/td>\n<\/tr>\n<tr>\n<td>Y\u00eau c\u1ea7u \u0111\u1ea7u n\u1ed1i<\/td>\n<td>Ti\u00eau chu\u1ea9n<\/td>\n<td>H\u1ee3p ch\u1ea5t ch\u1ed1ng oxy h\u00f3a, \u0111\u1ea7u cos nh\u00f4m, l\u1ef1c si\u1ebft \u0111\u00fang (b\u1eaft bu\u1ed9c)<\/td>\n<\/tr>\n<tr>\n<td>Lo ng\u1ea1i v\u1ec1 \u0103n m\u00f2n<\/td>\n<td>T\u1ed1i thi\u1ec3u<\/td>\n<td>Oxy h\u00f3a t\u1ea1i \u0111\u1ea7u n\u1ed1i n\u1ebfu kh\u00f4ng ph\u1ee7 \u2014 \u0111\u00e2y l\u00e0 ch\u1ebf \u0111\u1ed9 h\u1ecfng c\u1ee7a nh\u00f4m #1<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c lo\u1ea1i c\u00e1p ph\u1ed5 bi\u1ebfn<\/td>\n<td>THHN\/THWN-2 trong \u1ed1ng d\u1eabn, ho\u1eb7c XHHW-2<\/td>\n<td>C\u00e1p SER\/SEU (d\u00e2n d\u1ee5ng), XHHW-2, THWN-2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Th\u1ef1c t\u1ebf, c\u00e1p nh\u00f4m SER (4\/0) l\u00e0 \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng 200A \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t do ti\u1ebft ki\u1ec7m l\u1edbn v\u00e0 d\u1ec5 l\u1eafp \u0111\u1eb7t b\u1edfi th\u1ee3 \u0111i\u1ec7n c\u00f3 gi\u1ea5y ph\u00e9p. \u0110\u1ed3ng ph\u00f9 h\u1ee3p cho kh\u00f4ng gian ng\u1eafn, ch\u1eadt ho\u1eb7c c\u00e1c y\u00eau c\u1ea7u th\u01b0\u01a1ng m\u1ea1i kh\u00e1c. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng nh\u00f4m, h\u00e3y nh\u1edb ba quy t\u1eafc: s\u1eed d\u1ee5ng h\u1ee3p ch\u1ea5t ch\u1ed1ng oxy h\u00f3a cho k\u1ebft n\u1ed1i, s\u1eed d\u1ee5ng \u0111\u1ea7u cos v\u00e0 \u0111\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cho nh\u00f4m (kh\u00f4ng bao gi\u1edd d\u00f9ng \u0111\u1ea7u cos \u0111\u1ed3ng tr\u1ea7n), v\u00e0 lu\u00f4n s\u1eed d\u1ee5ng c\u1edd l\u00ea v\u1edbi l\u1ef1c si\u1ebft \u0111\u00fang.<\/p>\n<h2>\u201c4\/0-4\/0-2\/0\u201d tr\u00ean c\u00e1p SER c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h2>\n<p>Khi mua c\u00e1p d\u1ecbch v\u1ee5 d\u00e2n d\u1ee5ng, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p nh\u00e3n nh\u01b0 \u201cSER 4\/0-4\/0-2\/0\u201d ho\u1eb7c \u201c4-4-2\u201d. Nh\u1eefng nh\u00e3n n\u00e0y l\u00e0 vi\u1ebft t\u1eaft cho c\u00e1c lo\u1ea1i d\u00e2y d\u1eabn c\u00f3 trong c\u00e1p theo th\u1ee9 t\u1ef1 s\u1eafp x\u1ebfp, c\u1ee5 th\u1ec3: hai d\u00e2y 4\/0 (d\u00e2y n\u00f3ng) v\u00e0 m\u1ed9t d\u00e2y trung t\u00ednh 2\/0. Theo NEC 310.12, \u0111\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 c\u1ea5u h\u00ecnh d\u1ecbch v\u1ee5 d\u00e2n d\u1ee5ng 200A ti\u00eau chu\u1ea9n:<\/p>\n<ul>\n<li>D\u00e2y \u0111\u1ed3ng ho\u1eb7c nh\u00f4m 4\/0 \u2014 hai d\u00e2y kh\u00f4ng n\u1ed1i \u0111\u1ea5t (d\u00e2y n\u00f3ng)<\/li>\n<li>D\u00e2y d\u1eabn trung t\u00ednh 2\/0 \u2014 d\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t c\u00f3 th\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n v\u00ec n\u00f3 ch\u1ec9 mang t\u1ea3i kh\u00f4ng c\u00e2n b\u1eb1ng.<\/li>\n<\/ul>\n<p>Do \u0111\u00f3, \u201c4\/0-4\/0-2\/0\u201d l\u00e0 vi\u1ebft t\u1eaft cho m\u1ed9t lo\u1ea1i c\u00e1p d\u00e2n d\u1ee5ng \u0111i\u1ec3n h\u00ecnh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho d\u1ecbch v\u1ee5 200A. Khi ai \u0111\u00f3 h\u1ecfi \u201cC\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng 4\/0-4\/0-2\/0 cho d\u1ecbch v\u1ee5 200A kh\u00f4ng?\u201d C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u00f3 v\u00ec lo\u1ea1i c\u00e1p n\u00e0y tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n theo NEC 310.12. H\u01a1n n\u1eefa, \u201c2\/0-2\/0-1\/0\u201d bi\u1ec3u th\u1ecb c\u00e1p d\u1ecbch v\u1ee5 b\u1eb1ng \u0111\u1ed3ng ch\u1ee9a hai d\u00e2y d\u1eabn 2\/0 v\u00e0 m\u1ed9t d\u00e2y d\u1eabn trung t\u00ednh 1\/0. Trong tr\u01b0\u1eddng h\u1ee3p c\u00e1p d\u1ecbch v\u1ee5 th\u01b0\u01a1ng m\u1ea1i 200A, c\u1ea7n t\u00ecm \u201c3\/0-3\/0-3\/0\u201d \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1p d\u1ecbch v\u1ee5 c\u00f3 ampacity \u0111\u1ea7y \u0111\u1ee7 ph\u00f9 h\u1ee3p.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3835\" style=\"text-align: center;\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/Run-Length-Voltage-Drop.webp\" alt=\"Chi\u1ec1u d\u00e0i ch\u1ea1y d\u00e2y &amp; S\u1ee5t \u00e1p\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Chi\u1ec1u d\u00e0i ch\u1ea1y &amp; S\u1ee5t \u00e1p: Khi n\u00e0o c\u1ea7n t\u0103ng k\u00edch th\u01b0\u1edbc<\/h2>\n<p>Th\u00f4ng th\u01b0\u1eddng, s\u1ee5t \u00e1p kh\u00f4ng ph\u1ea3i l\u00e0 y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u theo m\u00e3 cho d\u1ecbch v\u1ee5 t\u1ea1i h\u1ea7u h\u1ebft c\u00e1c khu v\u1ef1c \u1edf Hoa K\u1ef3. (Khuy\u1ebfn ngh\u1ecb: 3% cho feeder &amp; 5% cho t\u1ed5ng s\u1ee5t \u00e1p). M\u1ed9t h\u01b0\u1edbng d\u1eabn s\u01a1 b\u1ed9 \u1edf 200A cho th\u1ea5y t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi c\u00e1c \u0111o\u1ea1n ch\u1ea1y d\u00e0i \u1edf khu v\u1ef1c n\u00f4ng th\u00f4n.<\/p>\n<table>\n<thead>\n<tr>\n<th>D\u00e2y d\u1eabn<\/th>\n<th>Chi\u1ec1u d\u00e0i ch\u1ea1y t\u1ed1i \u0111a m\u1ed9t chi\u1ec1u x\u1ea5p x\u1ec9 (s\u1ee5t \u00e1p 3%)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed3ng 3\/0<\/td>\n<td>~234 ft (240V)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 4\/0<\/td>\n<td>~297 ft (240V)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 2\/0 (d\u00e2n d\u1ee5ng 310.12)<\/td>\n<td>~186 ft (240V)<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m 4\/0 (d\u00e2n d\u1ee5ng 310.12)<\/td>\n<td>~179 ft (240V)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u1ea7n l\u01b0u \u00fd r\u1eb1ng, n\u00f3i chung, v\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng c\u00e1ch kho\u1ea3ng 150-200 feet, n\u00ean t\u0103ng k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn l\u00ean m\u1ed9t c\u1ea5p. V\u00ed d\u1ee5, c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p t\u1eeb nh\u00f4m 4\/0 l\u00ean 250 kcmil, ho\u1eb7c t\u1eeb \u0111\u1ed3ng 3\/0 l\u00ean 4\/0. \u0110\u1ed1i v\u1edbi d\u1ecbch v\u1ee5 d\u00e2n d\u1ee5ng 200A \u0111i\u1ec3n h\u00ecnh ch\u1ea1y tr\u00ean kho\u1ea3ng c\u00e1ch 300 feet, nhi\u1ec1u th\u1ee3 \u0111i\u1ec7n s\u1ebd s\u1eed d\u1ee5ng nh\u00f4m 300 kcmil ho\u1eb7c \u0111\u1ed3ng 4\/0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n n\u1eb1m trong m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n<h2>K\u00edch th\u01b0\u1edbc D\u00e2y d\u1eabn \u0110i\u1ec7n c\u1ef1c N\u1ed1i \u0111\u1ea5t (GEC)<\/h2>\n<p>L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 kh\u00f4ng ch\u1ec9 y\u00eau c\u1ea7u c\u00e1c d\u00e2y d\u1eabn ch\u00ednh m\u00e0 c\u00f2n c\u1ea7n d\u00e2y d\u1eabn \u0111i\u1ec7n c\u1ef1c n\u1ed1i \u0111\u1ea5t (GEC) c\u00f3 k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo B\u1ea3ng NEC 250.66. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng b\u1ea3ng n\u00e0y kh\u00e1c v\u1edbi B\u1ea3ng 250.122 d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb v\u00e0 s\u1ef1 nh\u1ea7m l\u1eabn n\u00e0y l\u00e0 v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn.<br \/>\nDo \u0111\u00f3, GEC cho d\u1ecbch v\u1ee5 v\u1edbi:<\/p>\n<ul>\n<li>D\u00e2y d\u1eabn \u0111\u1ed3ng 2\/0 ho\u1eb7c nh\u00f4m 4\/0 s\u1ebd c\u00f3 k\u00edch th\u01b0\u1edbc \u00edt nh\u1ea5t l\u00e0 4 AWG cho \u0111\u1ed3ng<\/li>\n<li>\u0110\u1ed3ng 3\/0 ho\u1eb7c nh\u00f4m 250 kcmil th\u01b0\u1eddng c\u0169ng l\u00e0 4 AWG, m\u1eb7c d\u00f9 gi\u00e1 tr\u1ecb GEC c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/li>\n<li>C\u00e1c \u0111i\u1ec7n c\u1ef1c ti\u1ebfp \u0111\u1ea5t theo NEC 250.52 bao g\u1ed3m hai thanh ti\u1ebfp \u0111\u1ea5t c\u00e1ch nhau \u00edt nh\u1ea5t 6 feet ho\u1eb7c m\u1ed9t thanh ti\u1ebfp \u0111\u1ea5t v\u00e0 m\u1ed9t \u0111i\u1ec7n c\u1ef1c b\u1ed5 sung c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00f3ng s\u00e2u v\u00e0o \u0111\u1ea5t.<\/li>\n<\/ul>\n<p>Sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t khi n\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5 l\u00e0 s\u1eed d\u1ee5ng 6 AWG (k\u00edch th\u01b0\u1edbc cho d\u00e2y d\u1eabn ti\u1ebfp \u0111\u1ea5t thi\u1ebft b\u1ecb theo B\u1ea3ng 250.122) thay v\u00ec GEC, v\u00ec v\u1eady lu\u00f4n \u0111\u1ea3m b\u1ea3o nh\u00e0 th\u1ea7u c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng B\u1ea3ng 250.66 khi x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc GEC c\u1ea7n thi\u1ebft.<\/p>\n<h2>Lo\u1ea1i c\u00e1p &amp; d\u00e2y d\u1eabn cho l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5<\/h2>\n<p>X\u00e1c \u0111\u1ecbnh lo\u1ea1i c\u00e1p\/d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p v\u1edbi ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t:<\/p>\n<ul>\n<li>C\u00e1p SER (Service Entrance Round): th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c b\u1ed9 c\u1ea5p ngu\u1ed3n b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng; c\u00e1p SER nh\u00f4m c\u00f3 th\u1ec3 mang t\u1ea3i.<\/li>\n<li>SEU (Service Entrance Unarmored): l\u00e0 c\u00f4ng ngh\u1ec7 c\u0169 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i.<\/li>\n<li>THHN\/THWN-2: l\u00e0 lo\u1ea1i c\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c d\u00e2y d\u1eabn ri\u00eang l\u1ebb \u0111i qua \u1ed1ng d\u1eabn; \u0111\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn trong ng\u00e0nh.<\/li>\n<li>XHHW-2: ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u nh\u00f4m v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i l\u1edbn.<\/li>\n<li>D\u01b0\u1edbi \u0111\u1ea5t: s\u1eed d\u1ee5ng c\u00e1p d\u1ea1ng ch\u00f4n tr\u1ef1c ti\u1ebfp USE-2\/RHH\/RHW-2 \u1edf \u0111\u1ed9 s\u00e2u c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n<p>B\u1ea5t k\u1ec3 lo\u1ea1i c\u00e1p n\u00e0o b\u1ea1n s\u1eed d\u1ee5ng, h\u00e3y ki\u1ec3m tra ch\u1ee9ng nh\u1eadn li\u00ean quan \u0111\u1ebfn \u1ee9ng d\u1ee5ng v\u00e0 h\u01b0\u1edbng d\u1eabn ti\u1ec7n \u00edch cho vi\u1ec7c l\u1eafp \u0111\u1eb7t.<\/p>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi n\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5 200A<\/h2>\n<table>\n<thead>\n<tr>\n<th>Sai l\u1ea7m<\/th>\n<th>T\u1ea1i sao sai<\/th>\n<th>C\u00e1ch ti\u1ebfp c\u1eadn \u0111\u00fang<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>S\u1eed d\u1ee5ng 310.16 cho d\u1ecbch v\u1ee5 nh\u00e0 \u1edf<\/td>\n<td>\u00c9p bu\u1ed9c d\u00f9ng \u0111\u1ed3ng 3\/0 \/ nh\u00f4m 250 kcmil trong khi 2\/0 \/ 4\/0 l\u00e0 h\u1ee3p ph\u00e1p \u2014 l\u00e3ng ph\u00ed ti\u1ec1n<\/td>\n<td>S\u1eed d\u1ee5ng 310.12 cho nh\u00e0 \u1edf \u0111\u01a1n pha 120\/240V<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed d\u1ee5ng 310.12 cho th\u01b0\u01a1ng m\u1ea1i\/3 pha<\/td>\n<td>K\u00edch th\u01b0\u1edbc nh\u1ecf \u2014 \u0111\u1ed3ng 2\/0 kh\u00f4ng th\u1ec3 mang 200A n\u1ebfu kh\u00f4ng c\u00f3 ph\u00e9p nh\u00e0 \u1edf<\/td>\n<td>S\u1eed d\u1ee5ng \u0111\u1ea7y \u0111\u1ee7 ampacity 310.16: \u0111\u1ed3ng 3\/0 \/ nh\u00f4m 250 kcmil<\/td>\n<\/tr>\n<tr>\n<td>2 AWG ho\u1eb7c 1\/0 \u201ctr\u00f4ng g\u1ea7n \u0111\u1ee7\u201d<\/td>\n<td>2 AWG = 115A, 1\/0 = 150A \u2014 nguy c\u01a1 qu\u00e1 t\u1ea3i nghi\u00eam tr\u1ecdng<\/td>\n<td>Kh\u00f4ng bao gi\u1edd \u0111o\u00e1n; x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1eeb b\u1ea3ng<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m kh\u00f4ng c\u00f3 h\u1ee3p ch\u1ea5t ch\u1ed1ng oxy h\u00f3a<\/td>\n<td>\u0110\u1ea7u n\u1ed1i b\u1ecb oxy h\u00f3a n\u00f3ng l\u00ean v\u00e0 h\u1ecfng<\/td>\n<td>H\u1ee3p ch\u1ea5t n\u1ed1i + \u0111\u1ea7u c\u1ed1t ph\u00f9 h\u1ee3p v\u1edbi nh\u00f4m + th\u00f4ng s\u1ed1 m\u00f4-men xo\u1eafn<\/td>\n<\/tr>\n<tr>\n<td>GEC \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc theo 250.122 thay v\u00ec 250.66<\/td>\n<td>D\u00e2y d\u1eabn \u0111i\u1ec7n c\u1ef1c ti\u1ebfp \u0111\u1ea5t c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf<\/td>\n<td>GEC \u0111\u1ed3ng 4 AWG cho d\u1ecbch v\u1ee5 lo\u1ea1i 200A<\/td>\n<\/tr>\n<tr>\n<td>B\u1ecf qua chi\u1ec1u d\u00e0i ch\u1ea1y d\u00e2y<\/td>\n<td>S\u1ee5t \u00e1p l\u00e0m thi\u1ebfu \u0111i\u1ec7n \u1edf \u0111\u1ea7u xa c\u1ee7a t\u00e0i s\u1ea3n<\/td>\n<td>T\u0103ng k\u00edch th\u01b0\u1edbc khi v\u01b0\u1ee3t qu\u00e1 ~150-200 ft<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng c\u00f3 gi\u1ea5y ph\u00e9p \/ kh\u00f4ng ph\u1ed1i h\u1ee3p v\u1edbi ti\u1ec7n \u00edch<\/td>\n<td>Ki\u1ec3m tra kh\u00f4ng \u0111\u1ea1t, ti\u1ec7n \u00edch s\u1ebd kh\u00f4ng k\u1ebft n\u1ed1i<\/td>\n<td>Tr\u01b0\u1edbc ti\u00ean c\u1ea7n c\u00f3 gi\u1ea5y ph\u00e9p, ki\u1ec3m tra v\u00e0 l\u1ecbch tr\u00ecnh ti\u1ec7n \u00edch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e2n nh\u1eafc v\u1ec1 chi ph\u00ed &amp; gi\u1ea5y ph\u00e9p<\/h2>\n<p>Vi\u1ec7c n\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5 d\u00e2n d\u1ee5ng l\u00ean 200 ampe c\u00f3 th\u1ec3 l\u00e0 c\u00f4ng vi\u1ec7c \u0111i\u1ec7n \u0111\u1eaft \u0111\u1ecf nh\u1ea5t m\u00e0 m\u1ed9t ng\u01b0\u1eddi t\u1eebng th\u1ef1c hi\u1ec7n trong nh\u00e0 m\u00ecnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 \u01b0\u1edbc t\u00ednh s\u01a1 b\u1ed9 gi\u00e1 t\u1ea1i Hoa K\u1ef3, n\u0103m 2025-2026:<\/p>\n<ul>\n<li>V\u1eadt li\u1ec7u: b\u1ea3ng \u0111i\u1ec7n c\u00f9ng b\u1ed9 ng\u1eaft ch\u00ednh $150-$400; c\u00e1p d\u1ecbch v\u1ee5 (nh\u00f4m) $2-$5 m\u1ed7i foot; \u0111\u1ebf \u0111\u1ed3ng h\u1ed3 v\u00e0 ph\u1ee5 ki\u1ec7n $100-$300.<\/li>\n<li>Lao \u0111\u1ed9ng: $1,500-$4,000, t\u00f9y thu\u1ed9c khu v\u1ef1c, c\u0169ng nh\u01b0 vi\u1ec7c c\u00f3 c\u1ea7n thay th\u1ebf \u1ed1ng \u0111\u1ee9ng\/\u0111\u1ea7u m\u01b0a hay \u0111\u01b0\u1eddng d\u00e2y ng\u1ea7m b\u00ean d\u01b0\u1edbi.<\/li>\n<li>Gi\u1ea5y ph\u00e9p + ki\u1ec3m tra: $100-$500, g\u1ea7n nh\u01b0 b\u1eaft bu\u1ed9c \u1edf m\u1ecdi n\u01a1i.<\/li>\n<li>\u0110i\u1ec1u ph\u1ed1i ti\u1ec7n \u00edch: ti\u1ec7n \u00edch s\u1edf h\u1eefu \u0111\u1ed3ng h\u1ed3 \u0111o v\u00e0 k\u1ebft n\u1ed1i, v\u00e0 vi\u1ec7c ng\u1eaft\/k\u1ebft n\u1ed1i l\u1ea1i l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a k\u1ebf ho\u1ea1ch tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n<\/ul>\n<p>Khi m\u1ed9t d\u1ef1 \u00e1n y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111i\u1ec7n m\u1edbi v\u00e0 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, \u0111\u1ea3m b\u1ea3o ch\u1ee9ng nh\u1eadn \u0111\u00fang c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y n\u00ean l\u00e0 \u01b0u ti\u00ean c\u1ee7a ch\u00fang ta \u0111\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c l\u1ee3i th\u1ebf do l\u00e0m vi\u1ec7c v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean v\u1ec1 thi\u1ebft b\u1ecb \u0111i\u1ec7n h\u1ea1 th\u1ebf cung c\u1ea5p. Sau khi b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n 200A \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t, vi\u1ec7c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u00e1c m\u1ea1ch nh\u00e1nh ph\u00eda sau n\u00f3 l\u00e0 quan tr\u1ecdng v\u00ec nguy\u00ean t\u1eafc \u00e1p d\u1ee5ng cho m\u1ea1ch 15A c\u0169ng \u00e1p d\u1ee5ng cho t\u1eebng m\u1ea1ch nh\u00e1nh ph\u00eda sau b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh.<\/p>\n<h2>Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf: M\u1ed9t ghi ch\u00fa nhanh<\/h2>\n<p>Ngo\u00e0i B\u1eafc M\u1ef9, c\u00e1c quy t\u1eafc kh\u00e1c \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng, v\u00ec c\u00e1c khu v\u1ef1c kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi ch\u1ee7 y\u1ebfu theo c\u00e1c ph\u00e9p t\u00ednh ki\u1ec3u IEC\/BS 7671 (s\u1ee5t \u00e1p + hi\u1ec7u ch\u1ec9nh d\u1ef1a tr\u00ean c\u00e1ch l\u1eafp \u0111\u1eb7t) thay v\u00ec b\u1ea3ng d\u1ecbch v\u1ee5 \u0111\u01a1n gi\u1ea3n:<\/p>\n<ul>\n<li>V\u01b0\u01a1ng qu\u1ed1c Anh (BS 7671): kh\u00f4ng c\u00f3 kh\u00e1i ni\u1ec7m \u201ck\u00edch th\u01b0\u1edbc d\u00e2y d\u1ecbch v\u1ee5 200A\u201d \u2014 thay v\u00e0o \u0111\u00f3, ph\u00e9p t\u00ednh d\u1ef1a tr\u00ean ch\u1ebf \u0111\u1ed9 l\u1eafp \u0111\u1eb7t v\u00e0 lo\u1ea1i ngu\u1ed3n \u0111i\u1ec7n; v\u00ed d\u1ee5, ngu\u1ed3n 200A m\u1ed9t pha ho\u1eb7c ba pha y\u00eau c\u1ea7u kho\u1ea3ng 70-120 milim\u00e9t \u0111\u1ed3ng, nh\u01b0ng nhi\u1ec1u h\u01a1n nhi\u1ec1u trong tr\u01b0\u1eddng h\u1ee3p c\u00e1p ch\u1ea1y d\u00e0i. H\u1ec7 th\u1ed1ng \u1edf V\u01b0\u01a1ng qu\u1ed1c Anh v\u00e0 Hoa K\u1ef3 kh\u00e1c nhau v\u1ec1 c\u00e1c kh\u00eda c\u1ea1nh c\u01a1 b\u1ea3n (230V m\u1ed9t pha v\u00e0 400V ba pha), do \u0111\u00f3 logic t\u00ednh to\u00e1n c\u0169ng kh\u00f4ng gi\u1ed1ng nhau.<\/li>\n<li>EU (IEC 60364): ph\u01b0\u01a1ng ph\u00e1p t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u1edf V\u01b0\u01a1ng qu\u1ed1c Anh.<\/li>\n<li>\u00dac (AS\/NZS 3000): \u0111\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p, v\u1edbi d\u00e2y d\u1eabn c\u1ee7a ngu\u1ed3n 200A dao \u0111\u1ed9ng t\u1eeb 70-95 mm t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i c\u00e1p.<\/li>\n<li>Canada (Code CE): logic s\u1eed d\u1ee5ng \u1edf \u0111\u00e2y r\u1ea5t gi\u1ed1ng v\u1edbi NEC, v\u00e0 th\u01b0\u1eddng th\u00ec ngu\u1ed3n 200A s\u1eed d\u1ee5ng c\u00e1p \u0111\u1ed3ng 2\/0 ho\u1eb7c nh\u00f4m 4\/0.<\/li>\n<\/ul>\n<p>B\u00e0i h\u1ecdc l\u00e0 c\u00e1c s\u1ed1 li\u1ec7u NEC \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong s\u1ed5 tay n\u00e0y ch\u1ec9 \u00e1p d\u1ee5ng cho Hoa K\u1ef3 v\u00e0 Canada.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>K\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn c\u1ea7n thi\u1ebft cho d\u1ecbch v\u1ee5 200 amp l\u00e0 bao nhi\u00eau?<\/h3>\n<p>Theo NEC 310.12, trong tr\u01b0\u1eddng h\u1ee3p d\u1ecbch v\u1ee5 d\u00e2n d\u1ee5ng, d\u00e2y d\u1eabn c\u00f3 th\u1ec3 bao g\u1ed3m \u0111\u1ed3ng 2\/0 AWG ho\u1eb7c nh\u00f4m 4\/0 AWG. \u0110\u1ed1i v\u1edbi d\u1ecbch v\u1ee5 th\u01b0\u01a1ng m\u1ea1i, m\u1ee9c t\u1ed1i thi\u1ec3u cho d\u1ecbch v\u1ee5 200A l\u00e0 ba pha, \u0111\u00f3 l\u00e0 \u0111\u1ed3ng 3\/0 AWG ho\u1eb7c nh\u00f4m 250 kcmil nh\u01b0 \u0111\u01b0\u1ee3c ghi trong NEC 310.16. C\u00e1c d\u00e2y d\u1eabn \u0111i v\u00e0o b\u1ea3ng ph\u1ee5 c\u1ee7a h\u1ec7 th\u1ed1ng c\u0169ng ph\u1ea3i tu\u00e2n th\u1ee7 NEC 310.16. H\u00e3y nh\u1edb s\u1eed d\u1ee5ng c\u1ed9t 75\u00b0C cho ampacity c\u0169ng nh\u01b0 \u0111i\u1ec1u ch\u1ec9nh ampacity cho c\u00e1c \u0111o\u1ea1n d\u00e2y d\u00e0i.<\/p>\n<h3>D\u00e2y 2 AWG c\u00f3 ph\u00f9 h\u1ee3p cho d\u1ecbch v\u1ee5 200 amp kh\u00f4ng?<\/h3>\n<p>D\u00f2ng 115 amp m\u00e0 d\u00e2y \u0111\u1ed3ng s\u1ed1 2 AWG c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1edf 75\u00b0C th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi 200 amp y\u00eau c\u1ea7u. C\u1ee1 d\u00e2y n\u00e0y ph\u00f9 h\u1ee3p cho d\u00e2y d\u1eabn 125 amp. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u00e1p \u1ee9ng d\u1ecbch v\u1ee5 200 amp, c\u1ea7n d\u00e2y \u0111\u1ed3ng 2\/0 ho\u1eb7c d\u00e2y nh\u00f4m 4\/0 (d\u00e2n d\u1ee5ng, 310.12) ho\u1eb7c d\u00e2y \u0111\u1ed3ng 3\/0 ho\u1eb7c d\u00e2y nh\u00f4m 250 kcmil (th\u01b0\u01a1ng m\u1ea1i, 310.16). Vi\u1ec7c kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u00fang k\u00edch th\u01b0\u1edbc d\u00e2y d\u1ecbch v\u1ee5 s\u1ebd d\u1eabn \u0111\u1ebfn qu\u00e1 nhi\u1ec7t v\u00e0 vi ph\u1ea1m quy \u0111\u1ecbnh.<\/p>\n<h3>M\u00e3 NEC cho d\u00e2y d\u1ecbch v\u1ee5 200 amp l\u00e0 g\u00ec?<\/h3>\n<p>C\u00e1c ph\u1ea7n li\u00ean quan bao g\u1ed3m \u0110i\u1ec1u 230 c\u1ee7a NEC v\u1ec1 d\u1ecbch v\u1ee5 v\u00e0 NEC 310.12 v\u1ec1 nguy\u00ean t\u1eafc m\u00e3 83% cho ph\u00e9p s\u1eed d\u1ee5ng d\u00e2y \u0111\u1ed3ng 2\/0 ho\u1eb7c d\u00e2y nh\u00f4m 4\/0 trong m\u1ea1ch d\u00e2n d\u1ee5ng 200A, NEC 310.16 li\u00ean quan \u0111\u1ebfn b\u1ea3ng ampacity \u0111\u1ea7y \u0111\u1ee7 v\u00e0 quy \u0111\u1ecbnh s\u1eed d\u1ee5ng d\u00e2y \u0111\u1ed3ng 3\/0 ho\u1eb7c d\u00e2y nh\u00f4m 250 kcmil trong \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i ho\u1eb7c h\u1ec7 th\u1ed1ng ba pha c\u00f4ng su\u1ea5t 200A, NEC 310.14 n\u00eau kh\u00e1i ni\u1ec7m quy t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u n\u1ed1i v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a c\u1ed9t 75 \u0111\u1ed9, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 NEC 250.66 v\u1ec1 c\u00e1c ph\u00e9p t\u00ednh c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn \u0111i\u1ec7n c\u1ef1c n\u1ed1i \u0111\u1ea5t.<\/p>\n<h3>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng 4\/0-4\/0-2\/0 cho d\u1ecbch v\u1ee5 200 amp kh\u00f4ng?<\/h3>\n<p>C\u00f3, \u0111\u00fang v\u1eady. K\u00fd hi\u1ec7u \u201c4\/0-4\/0-2\/0\u201d cho bi\u1ebft d\u00e2y d\u1ecbch v\u1ee5 c\u1ee5 th\u1ec3 bao g\u1ed3m 2 d\u00e2y n\u00f3ng 4\/0 v\u00e0 1 d\u00e2y trung t\u00ednh 2\/0, ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c ti\u1ec5n ti\u00eau chu\u1ea9n cho d\u1ecbch v\u1ee5 200A \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi NEC 310.12 (th\u01b0\u1eddng th\u1ea5y trong c\u00e1p SER). D\u1ecbch v\u1ee5 th\u01b0\u01a1ng m\u1ea1i 200A y\u00eau c\u1ea7u ampacity \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a d\u00e2y \u0111\u1ed3ng 3\/0 ho\u1eb7c d\u00e2y nh\u00f4m 250 kcmil.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ol>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\" rel=\"nofollow noopener\" target=\"_blank\">NFPA 70 \u2014 M\u00e3 \u0111i\u1ec7n qu\u1ed1c gia (NEC): C\u00e1c \u0111i\u1ec1u 230, 250, 310<\/a><\/li>\n<li><a href=\"https:\/\/www.mikeholt.com\/code_changes.php\" rel=\"nofollow noopener\" target=\"_blank\">Mike Holt \u2014 Quy t\u1eafc NEC 310.12 83% v\u00e0 K\u00edch th\u01b0\u1edbc d\u1ecbch v\u1ee5<\/a><\/li>\n<li><a href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.303\" rel=\"nofollow noopener\" target=\"_blank\">OSHA 1910.303 \u2014 Y\u00eau c\u1ea7u \u0111i\u1ec7n t\u1ed5ng qu\u00e1t<\/a><\/li>\n<li><a href=\"https:\/\/www.ecmweb.com\/\" rel=\"nofollow noopener\" target=\"_blank\">T\u1ea1p ch\u00ed EC&amp;M \u2014 K\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5<\/a><\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60364 \u2014 L\u1eafp \u0111\u1eb7t \u0111i\u1ec7n \u00e1p th\u1ea5p (Qu\u1ed1c t\u1ebf)<\/a><\/li>\n<li><a href=\"https:\/\/www.nema.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NEMA \u2014 Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m v\u00e0 l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n<\/a><\/li>\n<\/ol>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Vi\u1ec7c quy\u1ebft \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p cho d\u1ecbch v\u1ee5 200 amp l\u00e0 v\u1ea5n \u0111\u1ec1 li\u1ec7u quy t\u1eafc 83% c\u00f3 \u00e1p d\u1ee5ng hay kh\u00f4ng. \u0110\u1ed1i v\u1edbi m\u1ed9t l\u1eafp \u0111\u1eb7t d\u00e2n d\u1ee5ng trung b\u00ecnh, b\u1ea1n s\u1ebd c\u1ea7n d\u00e2y \u0111\u1ed3ng 2\/0 ho\u1eb7c nh\u00f4m 4\/0 (th\u01b0\u1eddng th\u1ea5y d\u01b0\u1edbi d\u1ea1ng c\u00e1p 4\/0-4\/0-2\/0 SER), \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi NEC 310.12. \u0110\u1ed1i v\u1edbi c\u00e1c l\u1eafp \u0111\u1eb7t th\u01b0\u01a1ng m\u1ea1i, c\u00f4ng nghi\u1ec7p v\u00e0 3 pha 200A, k\u00edch th\u01b0\u1edbc d\u00e2y t\u1ed1i thi\u1ec3u l\u00e0 \u0111\u1ed3ng 3\/0 ho\u1eb7c nh\u00f4m 250 kcmil. B\u1ea5t k\u1ec3 t\u00ecnh hu\u1ed1ng n\u00e0o, h\u00e3y ch\u1eafc ch\u1eafn s\u1eed d\u1ee5ng ampacity ph\u00f9 h\u1ee3p (t\u00ecm th\u1ea5y trong c\u1ed9t 75\u00b0C) khi l\u00e0m vi\u1ec7c v\u1edbi \u0111\u1ea7u n\u1ed1i nh\u00f4m, \u0111i\u1ec1u ch\u1ec9nh \u0111\u00fang cho GEC d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc trong B\u1ea3ng 250.66, \u0111\u1ea3m b\u1ea3o d\u00e2y l\u1edbn h\u01a1n n\u1ebfu kho\u1ea3ng c\u00e1ch ch\u1ea1y d\u00e2y qu\u00e1 xa, v\u00e0 xin gi\u1ea5y ph\u00e9p cho c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n tr\u01b0\u1edbc khi ti\u1ec7n \u00edch k\u1ebft n\u1ed1i d\u1ecbch v\u1ee5. Khi b\u1ea1n c\u0169ng \u0111ang l\u00e0m m\u1edbi b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u1ea7u dao, hi\u1ec3u c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 \u2014 t\u1eeb <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/how-to-tell-if-a-breaker-is-bad\/\" rel=\"nofollow\">ph\u00e1t hi\u1ec7n c\u1ea7u dao b\u1ecb h\u1ecfng<\/a> \u0111\u1ebfn chi ph\u00ed th\u1ef1c t\u1ebf trong <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/how-much-to-replace-a-circuit-breaker\/\" rel=\"nofollow\">gi\u00e1 thay th\u1ebf c\u1ea7u dao<\/a> \u2014 gi\u1eef cho to\u00e0n b\u1ed9 n\u00e2ng c\u1ea5p trong ng\u00e2n s\u00e1ch v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh.<\/p>","protected":false},"excerpt":{"rendered":"<p>In case you have found out that the electrical panel is full, and the inspector defined the service to be too small, or in case you are going to construct a building and want to know that the installation of the electric car and the heat pump of your home is fresh so that there [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3841,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-3831","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\/3831","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=3831"}],"version-history":[{"count":5,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/3831\/revisions"}],"predecessor-version":[{"id":3840,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/3831\/revisions\/3840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/3841"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=3831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=3831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=3831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}