{"id":20834,"date":"2025-12-15T01:38:58","date_gmt":"2025-12-14T17:38:58","guid":{"rendered":"https:\/\/viox.com\/?p=20834"},"modified":"2025-12-15T01:44:33","modified_gmt":"2025-12-14T17:44:33","slug":"mcb-vs-mlo-panelboard-selection-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/mcb-vs-mlo-panelboard-selection-guide\/","title":{"rendered":"T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i: MCB so v\u1edbi MLO"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Khi xem x\u00e9t c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n ho\u1eb7c mua s\u1eafm t\u1ee7 \u0111i\u1ec7n, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e3 b\u1eaft g\u1eb7p c\u00e1c t\u1eeb vi\u1ebft t\u1eaft MCB v\u00e0 MLO\u2014v\u00e0 n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 c\u1ea5u h\u00ecnh n\u00e0o m\u00e0 d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u, th\u00ec b\u1ea1n kh\u00f4ng \u0111\u01a1n \u0111\u1ed9c. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa t\u1ee7 \u0111i\u1ec7n c\u00f3 \u00c1t-t\u00f4-m\u00e1t ch\u00ednh (MCB) v\u00e0 t\u1ee7 \u0111i\u1ec7n ch\u1ec9 c\u00f3 C\u1ea7u \u0111\u1ea5u ch\u00ednh (MLO) l\u00e0 m\u1ed9t trong nh\u1eefng ngu\u1ed3n g\u00e2y nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn nh\u1ea5t cho c\u00e1c nh\u00e0 th\u1ea7u \u0111i\u1ec7n, k\u1ef9 s\u01b0 t\u01b0 v\u1ea5n v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf.<\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 c\u01a1 b\u1ea3n: t\u1ee7 \u0111i\u1ec7n MCB bao g\u1ed3m m\u1ed9t \u00e1t-t\u00f4-m\u00e1t ch\u00ednh t\u00edch h\u1ee3p \u0111\u1ec3 b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 t\u1ee7 \u0111i\u1ec7n, trong khi t\u1ee7 \u0111i\u1ec7n MLO k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c c\u1ea7u \u0111\u1ea5u d\u00e2y ngu\u1ed3n \u0111\u1ebfn v\u00e0 d\u1ef1a v\u00e0o m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng \u1edf ph\u00eda tr\u00ean ngu\u1ed3n \u0111\u1ec3 b\u1ea3o v\u1ec7. Theo d\u1eef li\u1ec7u ng\u00e0nh, t\u1ee7 \u0111i\u1ec7n MCB c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m h\u01a1n 30\u2013100% so v\u1edbi c\u00e1c thi\u1ebft b\u1ecb MLO t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, khi\u1ebfn quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn tr\u1edf n\u00ean quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ng\u00e2n s\u00e1ch d\u1ef1 \u00e1n\u2014nh\u01b0ng ch\u1ec9 khi MLO tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u1ec1 m\u00e3 cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t so s\u00e1nh k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n gi\u1eefa t\u1ee7 \u0111i\u1ec7n MCB v\u00e0 MLO, h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u0110i\u1ec1u 408 trong NEC, c\u00e1c ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn th\u1ef1c t\u1ebf v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/professional-viox-panelboard-installation-in-industrial-electrical-room-showing-front-door-circuit-breakers-conduit-runs.webp\" alt=\"Professional VIOX panelboard installation in industrial electrical room showing front door, circuit breakers, conduit runs, and VIOX branding in commercial facility setting\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">L\u1eafp \u0111\u1eb7t t\u1ee7 \u0111i\u1ec7n VIOX chuy\u00ean nghi\u1ec7p trong ph\u00f2ng \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p, th\u1ec3 hi\u1ec7n c\u1eeda tr\u01b0\u1edbc, <a href=\"https:\/\/test.viox.com\/vi\/mcb\/\">b\u1ed9 ng\u1eaft m\u1ea1ch<\/a>, \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn v\u00e0 th\u01b0\u01a1ng hi\u1ec7u VIOX trong m\u00f4i tr\u01b0\u1eddng c\u01a1 s\u1edf th\u01b0\u01a1ng m\u1ea1i<\/figcaption><\/figure>\n<h2>T\u1ee7 \u0111i\u1ec7n l\u00e0 g\u00ec?<\/h2>\n<p>T\u1ee7 \u0111i\u1ec7n l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p \u0111i\u1ec7n, chia ngu\u1ed3n \u0111i\u1ec7n th\u00e0nh c\u00e1c m\u1ea1ch nh\u00e1nh, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u1ea7u ch\u00ec ho\u1eb7c \u00e1t-t\u00f4-m\u00e1t b\u1ea3o v\u1ec7 cho m\u1ed7i m\u1ea1ch trong m\u1ed9t v\u1ecf b\u1ecdc chung. Theo \u0110i\u1ec1u 408.1 c\u1ee7a NEC, t\u1ee7 \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t b\u1ea3ng \u0111\u01a1n ho\u1eb7c m\u1ed9t nh\u00f3m c\u00e1c \u0111\u01a1n v\u1ecb b\u1ea3ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1eafp r\u00e1p d\u01b0\u1edbi d\u1ea1ng m\u1ed9t b\u1ea3ng \u0111\u01a1n, ch\u1ee9a c\u00e1c thanh c\u00e1i v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng t\u1ef1 \u0111\u1ed9ng.<\/p>\n<p>T\u1ee7 \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 l\u00e0 trung t\u00e2m ph\u00e2n ph\u1ed1i\u2014ch\u00fang l\u1ea5y \u0111i\u1ec7n t\u1eeb m\u1ed9t ngu\u1ed3n l\u1edbn h\u01a1n (l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5, m\u00e1y bi\u1ebfn \u00e1p ho\u1eb7c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u1edf ph\u00eda tr\u00ean ngu\u1ed3n) v\u00e0 ph\u00e2n ph\u1ed1i n\u00f3 \u0111\u1ebfn nhi\u1ec1u m\u1ea1ch nh\u00e1nh cung c\u1ea5p \u00e1nh s\u00e1ng, \u1ed5 c\u1eafm, thi\u1ebft b\u1ecb v\u00e0 c\u00e1c t\u1ea3i kh\u00e1c trong to\u00e0n b\u1ed9 t\u00f2a nh\u00e0. C\u00e1c c\u01a1 s\u1edf \u0111i\u1ec3n h\u00ecnh s\u1eed d\u1ee5ng t\u1ee7 \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo th\u1ee9 b\u1eadc: m\u1ed9t t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i ch\u00ednh cung c\u1ea5p cho nhi\u1ec1u t\u1ee7 \u0111i\u1ec7n ph\u1ee5 n\u1eb1m r\u1ea3i r\u00e1c kh\u1eafp c\u01a1 s\u1edf.<\/p>\n<p>T\u1ee7 \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a thanh c\u00e1i (th\u01b0\u1eddng l\u00e0 100A, 225A, 400A, 600A ho\u1eb7c cao h\u01a1n), \u0111i\u1ec7n \u00e1p (120\/208V, 277\/480V, v.v.) v\u00e0 s\u1ed1 l\u01b0\u1ee3ng v\u1ecb tr\u00ed m\u1ea1ch. Ch\u00fang ph\u1ea3i tu\u00e2n th\u1ee7 UL 67 (Ti\u00eau chu\u1ea9n cho T\u1ee7 \u0111i\u1ec7n) v\u00e0 \u0111\u00e1p \u1ee9ng t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u NEC hi\u1ec7n h\u00e0nh v\u1ec1 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, n\u1ed1i \u0111\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn.<\/p>\n<h2>T\u1ee7 \u0111i\u1ec7n MCB: Thi\u1ebft k\u1ebf \u00c1t-t\u00f4-m\u00e1t ch\u00ednh<\/h2>\n<p>T\u1ee7 \u0111i\u1ec7n MCB k\u1ebft h\u1ee3p m\u1ed9t \u00e1t-t\u00f4-m\u00e1t ch\u00ednh nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u1ee5m t\u1ee7 \u0111i\u1ec7n. D\u00e2y d\u1eabn ngu\u1ed3n \u0111\u1ebfn \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c \u0111\u1ea7u n\u1ed1i ph\u00eda \u0111\u01b0\u1eddng d\u00e2y c\u1ee7a \u00e1t-t\u00f4-m\u00e1t ch\u00ednh n\u00e0y, sau \u0111\u00f3 c\u1ea5p \u0111i\u1ec7n cho c\u00e1c thanh c\u00e1i b\u00ean trong c\u1ee7a t\u1ee7 \u0111i\u1ec7n. C\u00e1c \u00e1t-t\u00f4-m\u00e1t m\u1ea1ch nh\u00e1nh k\u1ebft n\u1ed1i v\u1edbi c\u00e1c thanh c\u00e1i n\u00e0y \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c m\u1ea1ch ri\u00eang l\u1ebb.<\/p>\n<p>\u00c1t-t\u00f4-m\u00e1t ch\u00ednh c\u00f3 hai ch\u1ee9c n\u0103ng quan tr\u1ecdng: n\u00f3 cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho to\u00e0n b\u1ed9 t\u1ee7 \u0111i\u1ec7n theo NEC 408.36 v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i, cho ph\u00e9p to\u00e0n b\u1ed9 t\u1ee7 \u0111i\u1ec7n \u0111\u01b0\u1ee3c ng\u1eaft \u0111i\u1ec7n \u0111\u1ec3 b\u1ea3o tr\u00ec ho\u1eb7c t\u1eaft kh\u1ea9n c\u1ea5p m\u00e0 kh\u00f4ng c\u1ea7n truy c\u1eadp v\u00e0o thi\u1ebft b\u1ecb \u1edf ph\u00eda tr\u00ean ngu\u1ed3n.<\/p>\n<p><strong>Ki\u1ebfn tr\u00fac k\u1ef9 thu\u1eadt:<\/strong><\/p>\n<p>\u00c1t-t\u00f4-m\u00e1t ch\u00ednh th\u01b0\u1eddng l\u00e0 m\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/mccb\/\">\u00e1t-t\u00f4-m\u00e1t v\u1ecf \u0111\u00fac (MCCB)<\/a> \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 ph\u00f9 h\u1ee3p ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 t\u1ea3i t\u00ednh to\u00e1n theo \u0110i\u1ec1u 220 c\u1ee7a NEC. V\u00ed d\u1ee5: m\u1ed9t t\u1ee7 \u0111i\u1ec7n MCB 225A ch\u1ee9a m\u1ed9t \u00e1t-t\u00f4-m\u00e1t ch\u00ednh 225A b\u1ea3o v\u1ec7 m\u1ed9t thanh c\u00e1i \u0111\u1ecbnh m\u1ee9c 225A. \u00c1t-t\u00f4-m\u00e1t ph\u1ea3i c\u00f3 \u0111\u1ecbnh m\u1ee9c c\u1eaft \u0111\u1ee7 cho d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n (th\u01b0\u1eddng l\u00e0 10kA, 14kA, 22kA ho\u1eb7c cao h\u01a1n).<\/p>\n<p><strong>Nh\u1eefng c\u00e2n nh\u1eafc v\u1ec1 an to\u00e0n:<\/strong><\/p>\n<p>Ngay c\u1ea3 khi \u00e1t-t\u00f4-m\u00e1t ch\u00ednh \u1edf tr\u1ea1ng th\u00e1i T\u1eaeT, c\u00e1c \u0111\u1ea7u n\u1ed1i ph\u00eda \u0111\u01b0\u1eddng d\u00e2y v\u1eabn c\u00f3 \u0111i\u1ec7n. L\u00e0m vi\u1ec7c b\u00ean trong t\u1ee7 \u0111i\u1ec7n MCB m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u00f2i h\u1ecfi c\u00e1c quy tr\u00ecnh kh\u00f3a\/g\u1eafn th\u1ebb (LOTO) th\u00edch h\u1ee3p t\u1ea1i ngu\u1ed3n \u1edf ph\u00eda tr\u00ean.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/technical-cutaway-diagram-of-viox-mcb-main-circuit-breaker-panelboard-showing-internal-components-including-main-breaker-copper-busbars-branch-breakers-and-neutral-bar-with-engineering-annotations.webp\" alt=\"Technical cutaway diagram of VIOX MCB main circuit breaker panelboard showing internal components including main breaker, copper busbars, branch breakers, and neutral bar with engineering annotations\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">S\u01a1 \u0111\u1ed3 c\u1eaft k\u1ef9 thu\u1eadt c\u1ee7a t\u1ee7 \u0111i\u1ec7n \u00e1t-t\u00f4-m\u00e1t ch\u00ednh VIOX MCB cho th\u1ea5y c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong bao g\u1ed3m \u00e1t-t\u00f4-m\u00e1t ch\u00ednh, thanh c\u00e1i \u0111\u1ed3ng, \u00e1t-t\u00f4-m\u00e1t nh\u00e1nh v\u00e0 thanh trung t\u00ednh v\u1edbi c\u00e1c ch\u00fa th\u00edch k\u1ef9 thu\u1eadt<\/figcaption><\/figure>\n<h2>T\u1ee7 \u0111i\u1ec7n MLO: Thi\u1ebft k\u1ebf Ch\u1ec9 c\u00f3 C\u1ea7u \u0111\u1ea5u ch\u00ednh<\/h2>\n<p>T\u1ee7 \u0111i\u1ec7n MLO kh\u00f4ng ch\u1ee9a \u00e1t-t\u00f4-m\u00e1t ch\u00ednh. Thay v\u00e0o \u0111\u00f3, d\u00e2y d\u1eabn ngu\u1ed3n \u0111\u1ebfn k\u1ebft th\u00fac tr\u1ef1c ti\u1ebfp tr\u00ean c\u00e1c c\u1ea7u \u0111\u1ea5u k\u1ebft n\u1ed1i v\u1edbi c\u00e1c thanh c\u00e1i c\u1ee7a t\u1ee7 \u0111i\u1ec7n.<\/p>\n<p>V\u00ec t\u1ee7 \u0111i\u1ec7n MLO kh\u00f4ng c\u00f3 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng t\u00edch h\u1ee3p, NEC 408.36 y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng \u1edf ph\u00eda ngu\u1ed3n\u2014ngh\u0129a l\u00e0 \u1edf ph\u00eda tr\u00ean t\u1ee7 \u0111i\u1ec7n. Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng (OCPD) \u1edf ph\u00eda tr\u00ean n\u00e0y ph\u1ea3i c\u00f3 \u0111\u1ecbnh m\u1ee9c kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 \u0111\u1ecbnh m\u1ee9c c\u1ee7a t\u1ee7 \u0111i\u1ec7n MLO. B\u1ea3o v\u1ec7 \u1edf ph\u00eda tr\u00ean ph\u1ed5 bi\u1ebfn bao g\u1ed3m m\u1ed9t \u00e1t-t\u00f4-m\u00e1t ngu\u1ed3n trong m\u1ed9t t\u1ee7 \u0111i\u1ec7n kh\u00e1c, m\u1ed9t c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i c\u00f3 c\u1ea7u ch\u00ec ho\u1eb7c m\u1ed9t \u00e1t-t\u00f4-m\u00e1t trong b\u1ea3ng \u0111i\u1ec7n.<\/p>\n<p><strong>Ki\u1ebfn tr\u00fac k\u1ef9 thu\u1eadt:<\/strong><\/p>\n<p>T\u1ee7 \u0111i\u1ec7n MLO \u0111\u01a1n gi\u1ea3n h\u01a1n v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc so v\u1edbi t\u1ee7 \u0111i\u1ec7n MCB. C\u00e1c c\u1ea7u \u0111\u1ea5u ch\u00ednh k\u1ebft n\u1ed1i c\u00e1c d\u00e2y d\u1eabn \u0111\u1ebfn v\u1edbi c\u00e1c thanh c\u00e1i b\u00ean trong v\u00e0 c\u00e1c \u00e1t-t\u00f4-m\u00e1t m\u1ea1ch nh\u00e1nh k\u1ebft n\u1ed1i v\u1edbi c\u00e1c thanh c\u00e1i n\u00e0y. Vi\u1ec7c kh\u00f4ng c\u00f3 \u00e1t-t\u00f4-m\u00e1t ch\u00ednh l\u00e0m gi\u1ea3m di\u1ec7n t\u00edch v\u1eadt l\u00fd, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed c\u1ee7a t\u1ee7 \u0111i\u1ec7n.<\/p>\n<p><strong>\u00dd ngh\u0129a ho\u1ea1t \u0111\u1ed9ng:<\/strong><\/p>\n<p>\u0110\u1ec3 ng\u1eaft \u0111i\u1ec7n ho\u00e0n to\u00e0n m\u1ed9t t\u1ee7 \u0111i\u1ec7n MLO, b\u1ea1n ph\u1ea3i m\u1edf OCPD \u1edf ph\u00eda tr\u00ean. N\u1ebfu \u00e1t-t\u00f4-m\u00e1t \u1edf ph\u00eda tr\u00ean n\u1eb1m c\u00e1ch xa t\u1ee7 \u0111i\u1ec7n MLO, vi\u1ec7c b\u1ea3o tr\u00ec tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n. NEC 240.24(A) nh\u1ea5n m\u1ea1nh r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng ph\u1ea3i \u201cd\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn\u201d.\u201d<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/technical-cutaway-diagram-of-viox-mlo-main-lug-only-panelboard-showing-internal-architecture-with-main-lugs-copper-busbars-branch-breakers-without-main-circuit-breaker.webp\" alt=\"Technical cutaway diagram of VIOX MLO main lug only panelboard showing internal architecture with main lugs, copper busbars, branch breakers without main circuit breaker\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">S\u01a1 \u0111\u1ed3 c\u1eaft k\u1ef9 thu\u1eadt c\u1ee7a t\u1ee7 \u0111i\u1ec7n ch\u1ec9 c\u00f3 c\u1ea7u \u0111\u1ea5u ch\u00ednh VIOX MLO cho th\u1ea5y ki\u1ebfn tr\u00fac b\u00ean trong v\u1edbi c\u00e1c c\u1ea7u \u0111\u1ea5u ch\u00ednh, thanh c\u00e1i \u0111\u1ed3ng, \u00e1t-t\u00f4-m\u00e1t nh\u00e1nh m\u00e0 kh\u00f4ng c\u00f3 \u00e1t-t\u00f4-m\u00e1t ch\u00ednh<\/figcaption><\/figure>\n<h2>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh: So s\u00e1nh MCB v\u00e0 MLO<\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 v\u1eadn h\u00e0nh gi\u1eefa t\u1ee7 \u0111i\u1ec7n MCB v\u00e0 MLO l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c trong \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">N\u0103ng<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n MCB<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n MLO<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>B\u1ea3o V\u1ec7 Qu\u00e1 D\u00f2ng<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u00c1t-t\u00f4-m\u00e1t ch\u00ednh t\u00edch h\u1ee3p b\u00ean trong t\u1ee7 \u0111i\u1ec7n<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">OCPD \u1edf ph\u00eda tr\u00ean (\u00e1t-t\u00f4-m\u00e1t ngu\u1ed3n ho\u1eb7c ng\u1eaft k\u1ebft n\u1ed1i c\u00f3 c\u1ea7u ch\u00ec)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u00c1t-t\u00f4-m\u00e1t ch\u00ednh cung c\u1ea5p ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Kh\u00f4ng c\u00f3 ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9; ph\u1ea3i s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u1edf ph\u00eda tr\u00ean<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Tu\u00e2n th\u1ee7 NEC 408.36<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">V\u1ed1n \u0111\u00e3 tu\u00e2n th\u1ee7; \u00e1t-t\u00f4-m\u00e1t ch\u00ednh b\u1ea3o v\u1ec7 t\u1ee7 \u0111i\u1ec7n<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 \u1edf ph\u00eda tr\u00ean c\u00f3 \u0111\u1ecbnh m\u1ee9c \u2264 \u0111\u1ecbnh m\u1ee9c t\u1ee7 \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u0110i\u1ec3n H\u00ecnh D\u1ee5ng<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 ch\u00ednh, cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p, c\u00e1c v\u1ecb tr\u00ed \u1edf xa<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n ph\u1ee5, ph\u00e2n ph\u1ed1i \u1edf ph\u00eda d\u01b0\u1edbi, c\u00e1c d\u1ef1 \u00e1n nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Th\u1ec3 Ch\u1ea5t K\u00edch Th\u01b0\u1edbc<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">L\u1edbn h\u01a1n; bao g\u1ed3m v\u1ecf b\u1ecdc \u00e1t-t\u00f4-m\u00e1t ch\u00ednh<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Nh\u1ecf h\u01a1n; kh\u00f4ng y\u00eau c\u1ea7u kh\u00f4ng gian cho \u00e1t-t\u00f4-m\u00e1t ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Chi ph\u00ed<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u0110\u1eaft h\u01a1n 30\u2013100% so v\u1edbi MLO t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Chi ph\u00ed th\u1ea5p h\u01a1n; kh\u00f4ng t\u1ed1n chi ph\u00ed cho \u00e1t-t\u00f4-m\u00e1t ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Truy c\u1eadp b\u1ea3o tr\u00ec<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c quy tr\u00ecnh LOTO<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Y\u00eau c\u1ea7u quy\u1ec1n truy c\u1eadp v\u00e0o OCPD \u1edf ph\u00eda tr\u00ean (c\u00f3 th\u1ec3 \u1edf xa)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb d\u1ecbch v\u1ee5<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u0110\u01b0\u1ee3c ph\u00e9p cho l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 (\u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn)<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">S\u1eed d\u1ee5ng h\u1ea1n ch\u1ebf l\u00e0m thi\u1ebft b\u1ecb d\u1ecbch v\u1ee5 theo NEC 2020+<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u0110\u1ecbnh m\u1ee9c d\u00f2ng ng\u1eafn m\u1ea1ch (SCCR):<\/strong><\/p>\n<p>M\u1ecdi t\u1ee7 \u0111i\u1ec7n ph\u1ea3i c\u00f3 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch (SCCR) b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t c\u1ee7a n\u00f3. VIOX Electric ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch nghi\u00eam ng\u1eb7t theo UL 67 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ee7 \u0111i\u1ec7n c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e1p \u1ee9ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 c\u00e1c y\u00eau c\u1ea7u SCCR cho c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p, v\u1edbi \u0111\u1ecbnh m\u1ee9c t\u1eeb 10kA \u0111\u1ebfn 65kA ho\u1eb7c cao h\u01a1n.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/technical-comparison-diagram-showing-mcb-versus-mlo-panelboard-upstream-protection-configurations-with-electrical-schematic-illustrating-integral-protection-versus-upstream-ocpd-requirements.webp\" alt=\"Technical comparison diagram showing MCB versus MLO panelboard upstream protection configurations with electrical schematic illustrating integral protection versus upstream OCPD requirements\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">S\u01a1 \u0111\u1ed3 so s\u00e1nh k\u1ef9 thu\u1eadt cho th\u1ea5y c\u1ea5u h\u00ecnh b\u1ea3o v\u1ec7 \u1edf ph\u00eda tr\u00ean c\u1ee7a t\u1ee7 \u0111i\u1ec7n MCB so v\u1edbi MLO v\u1edbi s\u01a1 \u0111\u1ed3 \u0111i\u1ec7n minh h\u1ecda b\u1ea3o v\u1ec7 t\u00edch h\u1ee3p so v\u1edbi c\u00e1c y\u00eau c\u1ea7u OCPD \u1edf ph\u00eda tr\u00ean<\/figcaption><\/figure>\n<h2>Khi n\u00e0o n\u00ean ch\u1ecdn T\u1ee7 \u0111i\u1ec7n MCB<\/h2>\n<p>M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng v\u00e0 y\u00eau c\u1ea7u c\u1ee7a NEC quy \u0111\u1ecbnh ho\u1eb7c \u01b0u ti\u00ean m\u1ea1nh m\u1ebd t\u1ee7 \u0111i\u1ec7n MCB:<\/p>\n<ul>\n<li><strong>1. Thi\u1ebft b\u1ecb l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5:<\/strong> Khi m\u1ed9t t\u1ee7 \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 l\u00e0 thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i d\u1ecbch v\u1ee5 ch\u00ednh cho m\u1ed9t t\u00f2a nh\u00e0, th\u00ec th\u01b0\u1eddng y\u00eau c\u1ea7u m\u1ed9t t\u1ee7 \u0111i\u1ec7n MCB. NEC 230.70 quy \u0111\u1ecbnh m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i d\u1ecbch v\u1ee5 d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn.<\/li>\n<li><strong>2. B\u1ea3o v\u1ec7 cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p:<\/strong> Khi t\u1ee7 \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n t\u1eeb cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p, NEC 408.36(B) v\u00e0 240.21(C) chi ph\u1ed1i vi\u1ec7c b\u1ea3o v\u1ec7. C\u00e1c ngo\u1ea1i l\u1ec7 t\u1ed3n t\u1ea1i theo \u201cquy t\u1eafc \u0111\u1ea5u n\u1ed1i\u201d (quy t\u1eafc 10 foot v\u00e0 25 foot), nh\u01b0ng n\u1ebfu d\u00e2y d\u1eabn v\u01b0\u1ee3t qu\u00e1 c\u00e1c gi\u1edbi h\u1ea1n n\u00e0y, th\u00ec c\u1ea7n c\u00f3 t\u1ee7 \u0111i\u1ec7n MCB.<\/li>\n<li><strong>3. C\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c c\u00f4ng tr\u00ecnh ri\u00eang bi\u1ec7t:<\/strong> \u0110i\u1ec1u 225.31 c\u1ee7a NEC y\u00eau c\u1ea7u m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i cho c\u00e1c \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p ngu\u1ed3n cho c\u00e1c t\u00f2a nh\u00e0 ri\u00eang bi\u1ec7t. M\u1ed9t t\u1ee7 \u0111i\u1ec7n MCB ph\u1ee5c v\u1ee5 m\u1ee5c \u0111\u00edch k\u00e9p: ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i b\u1eaft bu\u1ed9c v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i.<\/li>\n<li><strong>4. C\u00e1c v\u1ecb tr\u00ed \u1edf xa:<\/strong> Trong c\u00e1c c\u01a1 s\u1edf l\u1edbn\u2014nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t, nh\u00e0 kho, b\u1ec7nh vi\u1ec7n\u2014vi\u1ec7c l\u1eafp \u0111\u1eb7t t\u1ee7 \u0111i\u1ec7n MCB \u1edf c\u00e1c v\u1ecb tr\u00ed \u1edf xa cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 \u0111\u1ec3 b\u1ea3o tr\u00ec v\u00e0 \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p.<\/li>\n<li><strong>5. C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng:<\/strong> B\u1ec7nh vi\u1ec7n, c\u01a1 s\u1edf \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng s\u1eed d\u1ee5ng t\u1ee7 \u0111i\u1ec7n MCB \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u1eaft r\u00f5 r\u00e0ng, ngay l\u1eadp t\u1ee9c.<\/li>\n<\/ul>\n<h2>Khi n\u00e0o n\u00ean ch\u1ecdn T\u1ee7 \u0111i\u1ec7n MLO<\/h2>\n<p>T\u1ee7 \u0111i\u1ec7n MLO mang l\u1ea1i nh\u1eefng l\u1ee3i th\u1ebf \u0111\u00e1ng k\u1ec3 trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 quy \u0111\u1ecbnh cho ph\u00e9p s\u1eed d\u1ee5ng ch\u00fang:<\/p>\n<ul>\n<li><strong>1. \u1ee8ng d\u1ee5ng c\u1ee7a T\u1ee7 \u0111i\u1ec7n nh\u00e1nh (Sub-Panel):<\/strong> \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a t\u1ee7 \u0111i\u1ec7n MLO l\u00e0 l\u00e0m t\u1ee7 \u0111i\u1ec7n nh\u00e1nh \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n t\u1eeb t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i ch\u00ednh. M\u1ed9t \u00e1pt\u00f4m\u00e1t (breaker) c\u1ea5p ngu\u1ed3n trong t\u1ee7 \u0111i\u1ec7n ch\u00ednh cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho c\u1ea3 \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p ngu\u1ed3n v\u00e0 t\u1ee7 \u0111i\u1ec7n nh\u00e1nh MLO \u1edf h\u1ea1 ngu\u1ed3n\u2014ho\u00e0n to\u00e0n tu\u00e2n th\u1ee7 NEC v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed.<\/li>\n<li><strong>2. C\u00e1c D\u1ef1 \u00e1n Nh\u1ea1y c\u1ea3m v\u1ec1 Chi ph\u00ed:<\/strong> \u1ede nh\u1eefng n\u01a1i NEC cho ph\u00e9p s\u1eed d\u1ee5ng t\u1ee7 \u0111i\u1ec7n MLO, vi\u1ec7c ti\u1ebft ki\u1ec7m chi ph\u00ed t\u1eeb 30\u2013100% so v\u1edbi c\u00e1c t\u1ee7 MCB l\u00e0 \u0111\u00e1ng k\u1ec3. Trong c\u00e1c d\u1ef1 \u00e1n l\u1edbn v\u1edbi h\u00e0ng t\u00e1 t\u1ee7 \u0111i\u1ec7n nh\u00e1nh, vi\u1ec7c ch\u1ecdn MLO cho c\u00e1c v\u1ecb tr\u00ed th\u00edch h\u1ee3p c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m t\u1eeb 50.000 \u0111\u1ebfn 100.000 \u0111\u00f4 la tr\u1edf l\u00ean chi ph\u00ed thi\u1ebft b\u1ecb.<\/li>\n<li><strong>3. C\u00e1c L\u1eafp \u0111\u1eb7t B\u1ecb H\u1ea1n ch\u1ebf v\u1ec1 Kh\u00f4ng gian:<\/strong> T\u1ee7 \u0111i\u1ec7n MLO c\u00f3 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd nh\u1ecf h\u01a1n v\u00e0 nh\u1eb9 h\u01a1n so v\u1edbi c\u00e1c t\u1ee7 MCB t\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u2014r\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb trong c\u00e1c d\u1ef1 \u00e1n c\u1ea3i t\u1ea1o ho\u1eb7c l\u1eafp \u0111\u1eb7t v\u1edbi kh\u00f4ng gian t\u01b0\u1eddng h\u1ea1n ch\u1ebf.<\/li>\n<li><strong>4. Thi\u1ebft b\u1ecb B\u1ea3o v\u1ec7 Qu\u00e1 d\u00f2ng (OCPD) \u1edf Ngu\u1ed3n C\u1ea5p D\u1ec5 D\u00e0ng Ti\u1ebfp C\u1eadn:<\/strong> N\u1ebfu \u00e1pt\u00f4m\u00e1t \u1edf ngu\u1ed3n c\u1ea5p n\u1eb1m trong t\u1ea7m nh\u00ecn (c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 trong v\u00f2ng 50 feet) ho\u1eb7c d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn t\u1eeb v\u1ecb tr\u00ed t\u1ee7 \u0111i\u1ec7n, th\u00ec b\u1ea5t l\u1ee3i v\u1ec1 m\u1eb7t v\u1eadn h\u00e0nh do thi\u1ebfu thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 l\u00e0 r\u1ea5t nh\u1ecf.<\/li>\n<\/ul>\n<p><strong>Khi n\u00e0o MLO KH\u00d4NG Ph\u00f9 h\u1ee3p:<\/strong><\/p>\n<ul>\n<li>Thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5 (s\u1eed d\u1ee5ng MCB tr\u1eeb khi c\u00f3 c\u00e1c ngo\u1ea1i l\u1ec7 c\u1ee5 th\u1ec3 c\u1ee7a NEC 2020)<\/li>\n<li>\u0110\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n tr\u1ef1c ti\u1ebfp t\u1eeb cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p m\u00e0 kh\u00f4ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n cho c\u00e1c ngo\u1ea1i l\u1ec7 quy t\u1eafc \u0111\u1ea5u n\u1ed1i (tap rule)<\/li>\n<li>\u0110\u1eb7t c\u00e1ch OCPD \u1edf ngu\u1ed3n c\u1ea5p h\u01a1n 25 feet ho\u1eb7c n\u01a1i thi\u1ebft b\u1ecb \u1edf ngu\u1ed3n c\u1ea5p kh\u00f4ng d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn<\/li>\n<li>Y\u00eau c\u1ea7u ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 theo c\u00e1c quy t\u1eafc hi\u1ec7n h\u00e0nh ho\u1eb7c quy tr\u00ecnh an to\u00e0n c\u1ee7a c\u01a1 s\u1edf<\/li>\n<\/ul>\n<h2>H\u01b0\u1edbng d\u1eabn v\u1ec1 \u0110\u1ecbnh c\u1ee1 v\u00e0 L\u1ef1a ch\u1ecdn<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ee7 \u0111i\u1ec7n ph\u00f9 h\u1ee3p \u0111\u00f2i h\u1ecfi ph\u1ea3i \u0111\u00e1nh gi\u00e1 c\u00f3 h\u1ec7 th\u1ed1ng:<\/p>\n<p><strong>B\u01b0\u1edbc 1: T\u00ednh to\u00e1n Y\u00eau c\u1ea7u v\u1ec1 T\u1ea3i<\/strong><\/p>\n<p>S\u1eed d\u1ee5ng \u0110i\u1ec1u 220 c\u1ee7a NEC \u0111\u1ec3 t\u00ednh to\u00e1n t\u1ed5ng t\u1ea3i k\u1ebft n\u1ed1i v\u00e0 t\u1ea3i y\u00eau c\u1ea7u. T\u00ednh to\u00e1n t\u1ea3i li\u00ean t\u1ee5c (ho\u1ea1t \u0111\u1ed9ng tr\u00ean 3 gi\u1edd) \u1edf m\u1ee9c 125% theo NEC 210.20.<\/p>\n<p><strong>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh C\u00e1c Y\u00eau c\u1ea7u B\u1eaft bu\u1ed9c<\/strong><\/p>\n<p>X\u00e1c \u0111\u1ecbnh xem \u1ee9ng d\u1ee5ng c\u00f3 b\u1eaft bu\u1ed9c MCB hay kh\u00f4ng:<\/p>\n<ul>\n<li>Thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5? (th\u01b0\u1eddng y\u00eau c\u1ea7u MCB)<\/li>\n<li>\u0110\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n t\u1eeb cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p? (Ki\u1ec3m tra s\u1ef1 tu\u00e2n th\u1ee7 quy t\u1eafc \u0111\u1ea5u n\u1ed1i)<\/li>\n<li>T\u00f2a nh\u00e0\/c\u00f4ng tr\u00ecnh ri\u00eang bi\u1ec7t? (Y\u00eau c\u1ea7u MCB theo NEC 225.31\u2013225.32)<\/li>\n<li>B\u1ea3o v\u1ec7 \u1edf ngu\u1ed3n c\u1ea5p d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn v\u00e0 ph\u1ed1i h\u1ee3p? (N\u1ebfu c\u00f3, c\u00f3 th\u1ec3 cho ph\u00e9p MLO)<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 3: \u0110\u00e1nh gi\u00e1 Nhu c\u1ea7u V\u1eadn h\u00e0nh<\/strong><\/p>\n<p>Xem x\u00e9t kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn b\u1ea3o tr\u00ec, quy m\u00f4 c\u01a1 s\u1edf, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng.<\/p>\n<p><strong>B\u01b0\u1edbc 4: \u0110\u00e1nh gi\u00e1 C\u00e1c H\u1ea1n ch\u1ebf v\u1ec1 Chi ph\u00ed v\u00e0 Kh\u00f4ng gian<\/strong><\/p>\n<p>N\u1ebfu MLO tu\u00e2n th\u1ee7 quy t\u1eafc v\u00e0 c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c v\u1ec1 m\u1eb7t v\u1eadn h\u00e0nh, h\u00e3y t\u00ednh to\u00e1n kho\u1ea3n ti\u1ebft ki\u1ec7m chi ph\u00ed (th\u01b0\u1eddng l\u00e0 30\u2013100%).<\/p>\n<p><strong>Ma tr\u1eadn V\u00ed d\u1ee5 L\u1ef1a ch\u1ecdn:<\/strong><\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u1ee8ng d\u1ee5ng<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">Lo\u1ea1i \u0111\u01b0\u1ee3c \u0110\u1ec1 xu\u1ea5t<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">L\u00fd do Ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 ch\u00ednh c\u1ee7a t\u00f2a nh\u00e0<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Y\u00eau c\u1ea7u ng\u1eaft k\u1ebft n\u1ed1i NEC 230.70<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p (&gt;10 ft t\u1eeb m\u00e1y bi\u1ebfn \u00e1p)<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">B\u1ea3o v\u1ec7 th\u1ee9 c\u1ea5p NEC 240.21(C)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n nh\u00e1nh \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n t\u1eeb t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i ch\u00ednh<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MLO<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Ti\u1ebft ki\u1ec7m chi ph\u00ed; \u00e1pt\u00f4m\u00e1t \u1edf ngu\u1ed3n c\u1ea5p cung c\u1ea5p b\u1ea3o v\u1ec7<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p ngu\u1ed3n cho t\u00f2a nh\u00e0 ri\u00eang bi\u1ec7t<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Y\u00eau c\u1ea7u ng\u1eaft k\u1ebft n\u1ed1i NEC 225.31<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n t\u1ea7ng trong c\u00f9ng t\u1ee7 \u0111i\u1ec7n nh\u01b0 tr\u1ee5c \u0111\u1ee9ng ch\u00ednh<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MLO<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Ngu\u1ed3n c\u1ea5p d\u1ec5 ti\u1ebfp c\u1eadn; hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n kho t\u1eeb xa (c\u00e1ch xa ngu\u1ed3n c\u1ea5p ch\u00ednh h\u01a1n 200 ft)<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Thu\u1eadn ti\u1ec7n trong v\u1eadn h\u00e0nh; ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n ch\u0103m s\u00f3c quan tr\u1ecdng c\u1ee7a b\u1ec7nh vi\u1ec7n<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">An to\u00e0n t\u00ednh m\u1ea1ng; ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 ngay l\u1eadp t\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">T\u1ee7 \u0111i\u1ec7n nh\u00e1nh c\u1ea3i thi\u1ec7n cho ng\u01b0\u1eddi thu\u00ea v\u0103n ph\u00f2ng<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">MLO<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed; \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n t\u1eeb t\u1ee7 \u0111i\u1ec7n MCB c\u1ee7a t\u00f2a nh\u00e0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u0110\u1ec1 xu\u1ea5t S\u1ea3n ph\u1ea9m VIOX:<\/strong><\/p>\n<p>VIOX Electric s\u1ea3n xu\u1ea5t c\u1ea3 t\u1ee7 \u0111i\u1ec7n MCB v\u00e0 MLO cho c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p. C\u00e1c t\u1ee7 MCB c\u1ee7a ch\u00fang t\u00f4i c\u00f3 \u00e1pt\u00f4m\u00e1t ch\u00ednh v\u1edbi d\u00f2ng c\u1eaft cao (l\u00ean \u0111\u1ebfn 65kA), \u0111\u1ecbnh m\u1ee9c thanh c\u00e1i t\u1eeb 100A \u0111\u1ebfn 1200A v\u00e0 c\u1ea5u h\u00ecnh 3 pha cho c\u00e1c h\u1ec7 th\u1ed1ng 208V, 480V v\u00e0 600V. C\u00e1c t\u1ee7 MLO cung c\u1ea5p c\u1ea5u tr\u00fac thanh c\u00e1i m\u1ea1nh m\u1ebd v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a m\u1ea1ch nh\u00e1nh t\u01b0\u01a1ng t\u1ef1 m\u00e0 kh\u00f4ng c\u1ea7n \u00e1pt\u00f4m\u00e1t ch\u00ednh, mang l\u1ea1i kho\u1ea3n ti\u1ebft ki\u1ec7m chi ph\u00ed t\u1eeb 35\u201350% cho c\u00e1c \u1ee9ng d\u1ee5ng ph\u00f9 h\u1ee3p. T\u1ea5t c\u1ea3 c\u00e1c t\u1ee7 \u0111i\u1ec7n VIOX \u0111\u1ec1u tu\u00e2n th\u1ee7 UL 67, \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC v\u00e0 bao g\u1ed3m c\u00e1c thanh n\u1ed1i \u0111\u1ea5t v\u00e0 trung t\u00ednh \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i nh\u00e0 m\u00e1y, thanh c\u00e1i \u0111\u1ed3ng v\u00e0 th\u01b0 m\u1ee5c m\u1ea1ch to\u00e0n di\u1ec7n.<\/p>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa T\u1ee7 \u0111i\u1ec7n MLO v\u00e0 MBR l\u00e0 g\u00ec???\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/SL3BwNjaWeg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>S\u1ef1 l\u1ef1a ch\u1ecdn gi\u1eefa t\u1ee7 \u0111i\u1ec7n MCB v\u00e0 MLO kh\u00f4ng bao gi\u1edd l\u00e0 t\u00f9y \u00fd\u2014\u0111\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC, c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng, nhu c\u1ea7u v\u1eadn h\u00e0nh v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 chi ph\u00ed. T\u1ee7 \u0111i\u1ec7n MCB cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng t\u00edch h\u1ee3p v\u00e0 ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn m\u1eb7c \u0111\u1ecbnh cho thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5, l\u1eafp \u0111\u1eb7t th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p, \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p ngu\u1ed3n cho t\u00f2a nh\u00e0 ri\u00eang bi\u1ec7t v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng. T\u1ee7 \u0111i\u1ec7n MLO mang l\u1ea1i kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 kh\u00f4ng gian \u0111\u00e1ng k\u1ec3 cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1ee7 \u0111i\u1ec7n nh\u00e1nh, n\u01a1i b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng \u1edf ngu\u1ed3n c\u1ea5p \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p \u0111\u00fang c\u00e1ch v\u00e0 d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn.<\/p>\n<p>VIOX Electric hi\u1ec3u r\u1eb1ng c\u00e1c quy\u1ebft \u0111\u1ecbnh ph\u00e2n ph\u1ed1i \u0111i\u1ec7n t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn s\u1ef1 an to\u00e0n, tu\u00e2n th\u1ee7 quy t\u1eafc v\u00e0 ng\u00e2n s\u00e1ch d\u1ef1 \u00e1n trong nhi\u1ec1u th\u1eadp k\u1ef7. C\u00e1c t\u1ee7 \u0111i\u1ec7n MCB v\u00e0 MLO c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a UL 67 v\u00e0 NEC, c\u00f3 c\u1ea5u tr\u00fac thanh c\u00e1i \u0111\u1ed3ng ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u1ecbnh m\u1ee9c d\u00f2ng s\u1ef1 c\u1ed1 m\u1ea1nh m\u1ebd v\u00e0 nh\u00e3n to\u00e0n di\u1ec7n \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra. Cho d\u00f9 b\u1ea1n c\u1ea7n m\u1ed9t t\u1ee7 \u0111i\u1ec7n MCB 225A \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p, m\u1ed9t t\u1ee7 \u0111i\u1ec7n nh\u00e1nh MLO 800A \u0111\u1ec3 m\u1edf r\u1ed9ng nh\u00e0 kho hay m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ee7 \u0111i\u1ec7n ph\u1ed1i h\u1ee3p ho\u00e0n ch\u1ec9nh cho m\u1ed9t c\u01a1 s\u1edf m\u1edbi, VIOX cung c\u1ea5p c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, t\u00e0i li\u1ec7u tu\u00e2n th\u1ee7 v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n th\u00e0nh c\u00f4ng.<\/p>\n<p>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng ch\u1ec9 \u0111\u1ecbnh c\u1ea5u h\u00ecnh t\u1ee7 \u0111i\u1ec7n ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a m\u00ecnh ch\u01b0a?<a href=\"https:\/\/test.viox.com\/vi\/contact\/\"> Li\u00ean h\u1ec7 v\u1edbi VIOX<\/a> \u0110\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a Electric \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 l\u1ef1a ch\u1ecdn, ph\u00e2n t\u00edch d\u00f2ng ng\u1eafn m\u1ea1ch, c\u1ea5u h\u00ecnh t\u00f9y ch\u1ec9nh v\u00e0 t\u00e0i li\u1ec7u tr\u00ecnh n\u1ed9p chi ti\u1ebft. H\u00e3y x\u00e2y d\u1ef1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n tu\u00e2n th\u1ee7 quy t\u1eafc, hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/p>\n<\/div>\n<div class=\"simg-pop-btn\" style=\"top: 371.828px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 371.828px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 1780.98px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 1780.98px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 2842.3px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 2842.3px; left: 14px; display: none;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction When reviewing electrical specifications or shopping for panelboards, you&#8217;ve likely encountered the acronyms MCB and MLO\u2014and if you&#8217;re uncertain about which configuration your project requires, you&#8217;re not alone. The choice between Main Circuit Breaker (MCB) and Main Lug Only (MLO) panelboards is one of the most common sources of confusion for electrical contractors, consulting [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20836,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-20834","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20834","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=20834"}],"version-history":[{"count":3,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20834\/revisions"}],"predecessor-version":[{"id":20839,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20834\/revisions\/20839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/20836"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=20834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=20834"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=20834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}