{"id":19902,"date":"2025-11-16T01:06:00","date_gmt":"2025-11-15T17:06:00","guid":{"rendered":"https:\/\/viox.com\/?p=19902"},"modified":"2025-11-13T22:18:34","modified_gmt":"2025-11-13T14:18:34","slug":"nec-120-percent-rule-solar-panel-upgrade-hack","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/nec-120-percent-rule-solar-panel-upgrade-hack\/","title":{"rendered":"$10,000 c\u00e2u H\u1ecfi: l\u00e0m th\u1ebf N\u00e0o \u0111\u1ec3 \u0111\u00e1nh B\u1ea1i \u0110\u01af\u1ee2C ... 120% quy T\u1eafc M\u00e0 kh\u00f4ng Thay th\u1ebf B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a B\u1ea1n"},"content":{"rendered":"<div class=\"product-intro\">\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-19904\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule.webp\" alt=\"How to Beat the NEC 120% Rule\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/How-to-Beat-the-NEC-120-Rule-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>B\u1ea1n \u0111\u00e3 l\u00e0m xong c\u00e1c to\u00e1n h\u1ecdc. C\u00e1c ROI tr\u00ean \u0111\u00f3 8kW h\u1ec7 m\u1eb7t tr\u1eddi tr\u00f4ng tuy\u1ec7t v\u1eddi. C\u00e1c t\u1ea5m \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn, t\u1ea7n l\u00e0 \u1ea5y, v\u00e0 c\u00e0i \u0111\u1eb7t \u0111\u00e3 s\u1eb5n s\u00e0ng \u0111\u1ec3 \u0111i.<\/p>\n<p>Sau \u0111\u00f3, c\u00e1c \u1ee9ng d\u1ee5ng cho ph\u00e9p tr\u1edf l\u1ea1i b\u1ecb t\u1eeb ch\u1ed1i.<\/p>\n<p>L\u00fd do? \u0110\u00e1ng tin c\u1eady c\u1ee7a b\u1ea1n gi\u00e0 125 b\u1ea3ng \u0111i\u1ec7n \"kh\u00f4ng th\u1ec3 x\u1eed l\u00fd\" m\u1eb7t tr\u1eddi backfeed. C\u00e0i \u0111\u1eb7t tay b\u1ea1n m\u1edbi tr\u00edch d\u1eabn: <strong>th\u00eam $10,000<\/strong> \u0111\u1ec3 \u0111\u00e0o m\u1ed9t c\u00e1i r\u00e3nh qua s\u00e2n tr\u01b0\u1edbc, rip ra \u0111\u01b0\u1eddng, v\u00e0 n\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5 cho 200A.<\/p>\n<p>\u0110\u1ed9t nhi\u00ean, n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi c\u1ee7a ROI ch\u1ec9 b\u1ed1c h\u01a1i.<\/p>\n<p>Tr\u01b0\u1edbc khi k\u00fd \u0111\u00f3 ki\u1ec3m tra ho\u1eb7c h\u1ee7y c\u00e1c d\u1ef1 \u00e1n, \u0111\u1eb7t xu\u1ed1ng x\u1ebbng. C\u00e1c \u0110\u01af\u1ee2C ... (\u0110i\u1ec7n Qu\u1ed1c gia M\u00e3) kh\u00f4ng ph\u1ea3i l\u00e0 c\u1ed1 g\u1eafng \u0111\u1ec3 ph\u00e1 s\u1ea3n b\u1ea1n, n\u00f3 \u0111ang c\u1ed1 g\u1eafng \u0111\u1ec3 ng\u0103n ch\u1eb7n b\u1ea1n tan ch\u1ea3y c\u1ee7a thanh c\u00e1i. V\u00e0 n\u1ebfu b\u1ea1n hi\u1ec3u v\u1eadt l\u00fd \u0111\u1eb1ng sau m\u00e3, c\u00f3 ba h\u1ee3p ph\u00e1p, m\u00e3-tu\u00e2n th\u1ee7 \"c\u1eeda\" m\u00e0 c\u00f3 th\u1ec3 c\u1ee9u anh m\u00e0 $10,000.<\/p>\n<p>H\u00e3y m\u1edf b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 t\u00ecm ki\u1ebfm ti\u1ec1n.<\/p>\n<h2>Nh\u00e2n v\u1eadt ph\u1ea3n Di\u1ec7n: l\u00e0 G\u00ec \u0110\u01af\u1ee2C ... 120% nguy\u00ean T\u1eafc?<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19906\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule.webp\" alt=\"The Villain: What is the NEC 120% Rule?\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Villain-What-is-the-NEC-120-Rule-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>\u0110\u1ec3 m\u1ed9t k\u1ef9 s\u01b0, m\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/busbar\/\">thanh c\u00e1i<\/a> ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u1ed3ng l\u1ed9 cho \u0111i\u1ec7n t\u1eed. Nh\u01b0ng \u0111\u1ec3 \u0110\u01af\u1ee2C ... thanh tra, \u0111\u00f3 l\u00e0 m\u1ed9t ti\u1ec1m n\u0103ng ch\u00e1y nguy hi\u1ec3m.<\/p>\n<p>Nh\u1eefng <strong>\u0110\u01af\u1ee2C ... 120% quy T\u1eafc<\/strong> (t\u00ecm th\u1ea5y trong \u0110\u01af\u1ee2C ... 705.12) t\u1ed3n t\u1ea1i \u0111\u1ec3 ng\u0103n ch\u1eb7n b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a b\u1ea1n l\u00e0 thanh c\u00e1i t\u1eeb x\u1eed l\u00fd h\u01a1n so v\u1edbi hi\u1ec7n n\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho.<\/p>\n<p>Trong m\u1ed9t nh\u00e0 ti\u00eau chu\u1ea9n, n\u0103ng l\u01b0\u1ee3ng ch\u1ea3y trong m\u1ed9t h\u01b0\u1edbng: kh\u1ecfi l\u01b0\u1edbi (Ch\u00ednh Ng\u1eaft) \u0111\u1ebfn c\u1ee7a b\u1ea1n. Nh\u01b0ng v\u1edbi n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, b\u1ea1n \u0111ang \u0111\u1ea9y m\u1ea1nh <em>tr\u1edf l\u1ea1i<\/em> v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n t\u1eeb ph\u00eda d\u01b0\u1edbi. N\u1ebfu l\u01b0\u1edbi \u0111\u1ea9y 125 t\u1eeb \u0111\u1ea7u, v\u00e0 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi c\u1ee7a \u0111\u1ea9y 40A t\u1eeb ph\u00eda d\u01b0\u1edbi, thanh c\u00e1i \u1edf gi\u1eefa l\u00fd thuy\u1ebft c\u00f3 th\u1ec3 mang 165A. N\u1ebfu thanh c\u00e1i \u0111\u00f3 ch\u1ec9 l\u00e0 \u0111\u00e1nh cho 125, n\u00f3 n\u00f3ng l\u00ean. N\u00f3 ph\u00e1t s\u00e1ng. Cu\u1ed1i c\u00f9ng, n\u00f3 kh\u00f4ng th\u00e0nh c\u00f4ng.<\/p>\n<h3>C\u00e1c To\u00e1n h\u1ecdc M\u00e0 Gi\u1ebft ch\u1ebft c\u00e1c Th\u1ecfa thu\u1eadn<\/h3>\n<p>M\u00e3 cung c\u1ea5p cho b\u1ea1n m\u1ed9t b\u1ed9 \u0111\u1ec7m. N\u00f3 cho ph\u00e9p t\u1ed5ng ngu\u1ed3n cung c\u1ea5p c\u1ee7a b\u1ea1n ng\u1eaft ngang nhau <strong>120%<\/strong> c\u00e1c thanh c\u00e1i gi\u00e1.<\/p>\n<p><strong>C\u00e1c C\u00f4ng Th\u1ee9c:<\/strong><br \/>\n(Thanh C\u00e1i Gi\u00e1 \u00d7 1.2) \u2013 Ch\u00ednh Ng\u1eaft K\u00edch Th\u01b0\u1edbc = Max N\u0103ng L\u01b0\u1ee3ng M\u1eb7t Tr\u1eddi Backfeed<\/p>\n<p>H\u00e3y nh\u00ecn v\u00e0o nh\u1eefng \"m\u1eb7t Tr\u1eddi Gi\u1ebft ng\u01b0\u1eddi B\u00ed \u1ea9n\" k\u1ecbch b\u1ea3n r\u1eb1ng b\u1ec7nh d\u1ecbch 125 t\u1ea5m:<\/p>\n<ul>\n<li><strong>Thanh C\u00e1i Gi\u00e1:<\/strong> 125<\/li>\n<li><strong>Ch\u00ednh Ng\u1eaft:<\/strong> 125<\/li>\n<li><strong>T\u00ednh to\u00e1n:<\/strong> (125 \u00d7 1.2) \u2013 125 = <strong>25A<\/strong><\/li>\n<\/ul>\n<p><strong>V\u1ea5n \u0110\u1ec1 L\u00e0:<\/strong> B\u1ea1n l\u00e0 h\u1ee3p ph\u00e1p cho ph\u00e9p \u0111\u1ec3 c\u00e0i \u0111\u1eb7t 25A c\u1ee7a m\u1eb7t tr\u1eddi (kho\u1ea3ng 4-5kW). Nh\u01b0ng b\u1ea1n c\u1ea7n 40A cho r\u1eb1ng 8kW h\u1ec7 th\u1ed1ng. B\u1ea1n \u0111ang 15 ng\u1eafn.<\/p>\n<p>C\u00e0i \u0111\u1eb7t n\u00f3i \"N\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5.\" Ch\u00fang t\u00f4i n\u00f3i: \"H\u00e3y nh\u00ecn v\u00e0o l\u1ef1a Ch\u1ecdn 1.\"<\/p>\n<hr \/>\n<h2>Gi\u1ea3i ph\u00e1p 1: \"Ng\u01b0\u1eddi Ngh\u00e8o Fix\" (Ch\u00ednh C\u1eaft gi\u1ea3m t\u1ea3i)<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19907\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating.webp\" alt=\"Solution 1: The &quot;Poor Man's Fix&quot; (Main Breaker Derating)\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-1-The-22Poor-Mans-Fix22-Main-Breaker-Derating-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>N\u1ebfu c\u00e1c to\u00e1n h\u1ecdc th\u1ee9c, v\u1ea5n \u0111\u1ec1 l\u00e0, thay \u0111\u1ed5i bi\u1ebfn.<\/p>\n<p>B\u1ea1n kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i Thanh c\u00e1i Gi\u00e1 (\u0111\u00f3 l\u00e0 nh\u1eefng v\u1eadt ch\u1ea5t b\u00ean trong h\u1ed9p). Nh\u01b0ng b\u1ea1n <em>c\u00f3 th\u1ec3<\/em> thay \u0111\u1ed5i <strong>Ch\u00ednh Ng\u1eaft K\u00edch Th\u01b0\u1edbc<\/strong>.<\/p>\n<p>B\u1eb1ng c\u00e1ch thay \u0111\u1ed5i c\u1ee7a 125 ch\u00ednh ng\u1eaft cho 100 breaker, b\u1ea1n gi\u1ea3 t\u1ea1o h\u1ea1 m\u1ea1ng l\u01b0\u1edbi ph\u1ea7n \u0111\u00f3ng g\u00f3p c\u1ee7a gi\u1ea3i ph\u00f3ng n\u0103ng l\u1ef1c cho n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>Gi\u1ea3m t\u1ea3i<\/strong>.<\/p>\n<p><strong>C\u00e1c To\u00e1n H\u1ecdc M\u1edbi:<\/strong><\/p>\n<ul>\n<li><strong>Thanh c\u00e1i:<\/strong> 125<\/li>\n<li><strong>Ch\u00ednh Ng\u1eaft:<\/strong> <strong>100<\/strong> (\u0110\u1ed9ng)<\/li>\n<li><strong>T\u00ednh to\u00e1n:<\/strong> (125 \u00d7 1.2) \u2013 100 = <strong>50A<\/strong><\/li>\n<\/ul>\n<p><strong>K\u1ebft Qu\u1ea3:<\/strong> Boom. B\u1ea1n b\u00e2y gi\u1edd c\u00f3 50A c\u1ee7a m\u1eb7t tr\u1eddi, kh\u1ea3 n\u0103ng. B\u1ea1n 40A h\u1ec7 th\u1ed1ng ph\u00f9 h\u1ee3p v\u1edbi ph\u00f2ng cho ph\u1ee5 t\u00f9ng. Chi ph\u00ed? Kho\u1ea3ng 200 $cho m\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/mcb\/\">breaker<\/a> trao \u0111\u1ed5i v\u1edbi 10,000 \u0111\u00f4 cho m\u1ed9t c\u00e1i r\u00e3nh.<\/p>\n<h3>Dr. tr\u01b0\u1edbc c\u00e1c \"EV B\u1eaby\" c\u1ea3nh B\u00e1o<\/h3>\n<p>Ch\u1edd \u0111\u1ee3i. Tr\u01b0\u1edbc khi b\u1ea1n high-five \u0111i\u1ec7n c\u1ee7a b\u1ea1n, h\u1ecfi m\u00ecnh m\u1ed9t c\u00e2u h\u1ecfi: <strong>C\u00f3 th\u1ec3 nh\u00e0 c\u1ee7a b\u1ea1n th\u1ef1c s\u1ef1 ch\u1ea1y tr\u00ean 100?<\/strong><\/p>\n<p>\u0110\u00e2y l\u00e0 \"EV B\u1eaby.\" \u1ede tu\u1ed5i c\u1ee7a gas, v\u00e0 \u0111\u1ed1t l\u00f2 s\u01b0\u1edfi, 100 r\u1ea5t nhi\u1ec1u. Nh\u01b0ng n\u1ebfu b\u1ea1n c\u00f3:<\/p>\n<ol>\n<li>M\u1ed9t chi\u1ebfc Xe \u0110i\u1ec7n (EV) s\u1ea1c (40A-60 t\u1ea3i)<\/li>\n<li>M\u1ed9t \u0111i\u1ec7n c\u1ea3m \u1ee9ng b\u1ebfp<\/li>\n<li>Trung t\u00e2m AC<\/li>\n<\/ol>\n<p>B\u1ea1n c\u00f3 th\u1ec3 chuy\u1ebfn \u0111i \u0111\u00f3 m\u1edbi 100 ch\u00ednh ng\u1eaft v\u00e0o m\u1ed9t m\u00f9a h\u00e8 n\u00f3ng bu\u1ed5i t\u1ed1i khi anh c\u1eafm Tesla v\u00e0 b\u1eadt l\u00f2 n\u01b0\u1edbng. B\u1ea1n \u0111\u00e3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi v\u1ea5n \u0111\u1ec1 nh\u01b0ng t\u1ea1o ra m\u1ed9t l\u1ed1i s\u1ed1ng v\u1ea5n \u0111\u1ec1.<\/p>\n<p>N\u1ebfu m\u1ed9t T\u00ednh to\u00e1n T\u1ea3i (\u0110\u01af\u1ee2C ... \u0110i\u1ec1u 220) cho th\u1ea5y \u0111\u1ec9nh cao c\u1ee7a b\u1ea1n nhu c\u1ea7u d\u01b0\u1edbi 100, \u0111\u00e2y l\u00e0 s\u1eeda ch\u1eefa ho\u00e0n h\u1ea3o. N\u1ebfu kh\u00f4ng? Ti\u1ebfn h\u00e0nh \u0111\u1ec3 Gi\u1ea3i ph\u00e1p 2.<\/p>\n<hr \/>\n<h2>Gi\u1ea3i Ph\u00e1p 2: \"Ma Thanh C\u00e1i\" (S\u1ed1)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19909\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot.webp\" alt=\"Solution 2: The &quot;Ghost Busbar&quot; (The Jackpot)\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-2-The-22Ghost-Busbar22-The-Jackpot-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>\u0110\u00e2y l\u00e0 b\u00ed m\u1eadt m\u00e0 t\u00e1ch t\u00e2n binh c\u00e0i \u0111\u1eb7t t\u1eeb nh\u1eefng thu\u1eadn.<\/p>\n<p>H\u1eadu c\u1ea7n s\u1ea3n xu\u1ea5t l\u00e0 l\u1ea1. Th\u01b0\u1eddng th\u00ec n\u00f3 r\u1ebb h\u01a1n l\u00e0 cho m\u1ed9t h\u00e3ng s\u1ea3n xu\u1ea5t (nh\u01b0 Siemens Vu\u00f4ng, D, ho\u1eb7c VIOX) \u0111\u1ec3 x\u00e2y d\u1ef1ng <em>m\u1ed9t trong nh\u1eefng<\/em> lo\u1ea1i n\u1eb7ng b\u1ea3ng trang tr\u00ed n\u1ed9i th\u1ea5t v\u00e0 \u0111\u1eb7t n\u00f3 v\u00e0o trong h\u1ed9p kh\u00e1c nhau.<\/p>\n<p>\u0110\u00f3 l\u00e0 m\u1ed9t c\u01a1 h\u1ed9i m\u00e0 b\u1ea1n \"125 B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n\" th\u1ef1c ra, c\u00f3 m\u1ed9t thanh c\u00e1i b\u00ecnh ch\u1ecdn cho <strong>200A<\/strong> hay <strong>225A<\/strong>nh\u01b0ng n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1n v\u1edbi m\u1ed9t 125 ch\u00ednh ng\u1eaft. Ch\u00fang t\u00f4i g\u1ecdi c\u00e1i n\u00e0y l\u00e0 nh\u1eefng <strong>\"Ma Thanh C\u00e1i\"<\/strong> c\u00f4ng su\u1ea5t.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 T\u00ecm nh\u1eefng con Ma<\/h3>\n<p>M\u1edf c\u1eeda (an to\u00e0n \u0111\u1ea7u ti\u00ean: \u0111\u1eebng ch\u1ea1m s\u1ed1ng ph\u1ea7n). Nh\u00ecn cho k\u1ef9 thu\u1eadt d\u00e1n tr\u00ean t\u01b0\u1eddng b\u00ean trong. B\u1ea1n \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t \u0111\u01b0\u1eddng m\u00e0 n\u00f3i:<\/p>\n<blockquote><p><strong>\"Max Xe Bu\u00fdt \u0110\u00e1nh Gi\u00e1\"<\/strong> hay <strong>\"Ngu\u1ed3n \u0110\u00e1nh Gi\u00e1\"<\/strong><\/p><\/blockquote>\n<p>N\u1ebfu m\u00e0 n\u00f3i sticker <strong>200A<\/strong> hay <strong>225A<\/strong>m\u1eb7c d\u00f9 vi\u1ec7c l\u00e0m c\u1ee7a ch\u00ednh ng\u1eaft l\u00e0 125, b\u1ea1n c\u00f3 tr\u00fang.<\/p>\n<p><strong>Ma To\u00e1n:<\/strong><\/p>\n<ul>\n<li><strong>Thanh C\u00e1i Gi\u00e1:<\/strong> 225A (C\u00e1c th\u00f4ng s\u1ed1)<\/li>\n<li><strong>Ch\u00ednh Ng\u1eaft:<\/strong> 125 (nh\u1eefng G\u00ec b\u1ea1n \u0111\u00e3 c\u00e0i \u0111\u1eb7t)<\/li>\n<li><strong>T\u00ednh to\u00e1n:<\/strong> (225 \u00d7 1.2) \u2013 125 = <strong>145A<\/strong><\/li>\n<\/ul>\n<p><strong>K\u1ebft Qu\u1ea3:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t th\u1ef1c t\u1ebf b\u1ea5t k\u1ef3 h\u1ec7 m\u1eb7t tr\u1eddi, b\u1ea1n mu\u1ed1n. Kh\u00f4ng breaker trao \u0111\u1ed5i, kh\u00f4ng gi\u1ea3m t\u1ea3i, kh\u00f4ng c\u00f3 \u0111\u00e0o b\u1edbi. B\u1ea1n ch\u1ec9 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ecdc nh\u00e3n.<\/p>\n<hr \/>\n<h2>Gi\u1ea3i Ph\u00e1p 3: \"K\u1ebd H\u1edf\" (D\u00f2ng B\u00ean Ch\u1ea1m)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19910\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap.webp\" alt=\"Solution 3: The &quot;Loophole&quot; (Line Side Tap)\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Solution-3-The-22Loophole22-Line-Side-Tap-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 derate (v\u00f4 qu\u00e1 cao) v\u00e0 anh kh\u00f4ng c\u00f3 ch\u00fat Thanh c\u00e1i, \u0111\u00f3 l\u00e0 m\u1ed9t di chuy\u1ec3n cu\u1ed1i c\u00f9ng: <strong>\u0110\u01b0\u1eddng B\u00ean Kia V\u00f2i N\u01b0\u1edbc.<\/strong><\/p>\n<p>120% quy lu\u1eadt \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ebfn <em>ph\u00eda t\u1ea3i,<\/em> c\u1ee7a nh\u1eefng <a href=\"https:\/\/test.viox.com\/vi\/mccb\/\">ch\u00ednh breaker<\/a>\u2014c\u00e1c thanh c\u00e1i n\u01a1i chi nh\u00e1nh c\u1ee7a b\u1ea1n m\u1ea1ch s\u1ed1ng. Nh\u01b0ng n\u1ebfu b\u1ea1n \u0111\u00e3 k\u1ebft n\u1ed1i m\u1eb7t tr\u1eddi <em>tr\u01b0\u1edbc khi<\/em> ch\u00ednh breaker?<\/p>\n<p>M\u1ed9t D\u00f2ng B\u00ean Ch\u1ea1m li\u00ean quan \u0111\u1ebfn vi\u1ec7c n\u1ed1i c\u00e1c n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ra tr\u1ef1c ti\u1ebfp v\u00e0o nh\u1eefng d\u1ecbch v\u1ee5 l\u1ed1i v\u00e0o d\u00e2y d\u1eabn gi\u1eefa nh\u1eefng ti\u1ec7n \u00edch m\u00e9t v\u00e0 c\u1ee7a ch\u00ednh ng\u1eaft.<\/p>\n<h3>T\u1ea1i Sao N\u00f3 Ho\u1ea1t \u0110\u1ed9ng<\/h3>\n<p>B\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i tr\u01b0\u1edbc c\u1ee7a ch\u00ednh breaker, m\u1eb7t tr\u1eddi hi\u1ec7n t\u1ea1i kh\u00f4ng bao gi\u1edd ch\u1ea1m \u0111\u1ebfn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a b\u1ea1n l\u00e0 h\u1ea1n ch\u1ebf thanh c\u00e1i. 120% nguy\u00ean t\u1eafc \u0111\u01a1n gi\u1ea3n ch\u1ec9 bi\u1ebfn m\u1ea5t. Gi\u1edbi h\u1ea1n duy nh\u1ea5t l\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a d\u1ecbch v\u1ee5 d\u00e2y \u0111\u1ebfn t\u1eeb \u0111\u01b0\u1eddng ph\u1ed1.<\/p>\n<h3>B\u1eaft<\/h3>\n<ol>\n<li><strong>V\u1eadt L\u00fd, Kh\u00f4ng Gian:<\/strong> B\u1ea1n c\u1ea7n ph\u00f2ng trong h\u1ed9p ch\u1ea5t k\u1eb9p v\u00e0o d\u00e2y an to\u00e0n.<\/li>\n<li><strong>Ch\u1ea5p Thu\u1eadn Ti\u1ec7n \u00cdch:<\/strong> M\u1ed9t s\u1ed1 \u00edch (th\u00edch R&amp;E trong khu v\u1ef1c nh\u1ea5t \u0111\u1ecbnh) c\u1ea5m n\u00e0y ho\u1eb7c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 ch\u1ea5m d\u1ee9t h\u1ed9p.<\/li>\n<li><strong>Bao V\u00e2y K\u1ef9 Thu\u1eadt:<\/strong> B\u1ea1n th\u01b0\u1eddng c\u1ea7n m\u1ed9t t\u00e1ch h\u1ee3p nh\u1ea5t ng\u1eaft k\u1ebft n\u1ed1i chuy\u1ec3n ti\u1ebfp theo \u0111\u1ebfn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n.<\/li>\n<\/ol>\n<p><em>Ch\u1ee7 Khi th\u1ef1c hi\u1ec7n m\u1ed9t \u0110\u01b0\u1eddng B\u00ean Ch\u1ea1m, s\u1eed d\u1ee5ng m\u1ed9t ch\u1ea5t l\u01b0\u1ee3ng cao h\u1ee3p nh\u1ea5t ng\u1eaft k\u1ebft n\u1ed1i (nh\u01b0 VIOX t\u1eafc an to\u00e0n c\u1ee7a d\u00f2ng) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 m\u1ed9t s\u1ea1ch s\u1ebd b\u1ecb c\u00f4 l\u1eadp, \u0111i\u1ec3m k\u1ebft n\u1ed1i th\u1ecfa m\u00e3n \u00edch ng\u1eaft k\u1ebft n\u1ed1i y\u00eau c\u1ea7u.<\/em><\/p>\n<hr \/>\n<h2>T\u00f3m l\u1ea1i: \u0110\u1eb7t Xu\u1ed1ng X\u1ebbng<\/h2>\n<p>\"D\u1ecbch V\u1ee5 N\u00e2ng c\u1ea5p\" b\u00e1o th\u01b0\u1eddng l\u00e0 m\u1ed9t l\u01b0\u1eddi bi\u1ebfng gi\u1ea3i ph\u00e1p. N\u00f3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1edbi b\u1ea1o l\u1ef1c (v\u00e0 ti\u1ec1n c\u1ee7a). Tr\u01b0\u1edbc khi b\u1ea1n \u1ee7y quy\u1ec1n cho s\u1ef1 \u0111\u00e0o, ch\u1ea1y danh s\u00e1ch ki\u1ec3m tra n\u00e0y:<\/p>\n<ol>\n<li><strong>Ki\u1ec3m tra Ma:<\/strong> Nh\u00ecn v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n nh\u00e3n. L\u00e0 thanh c\u00e1i gi\u00e1 cao h\u01a1n breaker?<\/li>\n<li><strong>Ch\u1ea1y Derate To\u00e1n:<\/strong> C\u00f3 th\u1ec3 nh\u00e0 c\u1ee7a b\u1ea1n t\u1ed3n t\u1ea1i tr\u00ean m\u1ed9t ch\u00ednh nh\u1ecf h\u01a1n breaker? (L\u00e0m m\u1ed9t h\u1ee3p \u0110\u01af\u1ee2C ... 220 t\u1ea3i b\u1ea3ng t\u00ednh).<\/li>\n<li><strong>Ki\u1ec3m tra Ch\u1ea1m v\u00e0o:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 b\u1ecf qua b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ho\u00e0n to\u00e0n v\u1edbi m\u1ed9t D\u00f2ng B\u00ean kia V\u00f2i n\u01b0\u1edbc?<\/li>\n<\/ol>\n<p>Ch\u1ec9 khi c\u1ea3 ba th\u1ea5t b\u1ea1i, b\u1ea1n n\u00ean g\u1ecdi c\u00e1c m\u00e1y x\u00fac.<\/p>\n<p>K\u1ef9 thu\u1eadt kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ec1 sau quy t\u1eafc, \u0111\u00f3 l\u00e0 v\u1ec1 s\u1ef1 hi\u1ec3u bi\u1ebft <em>t\u1ea1i sao<\/em> c\u00e1c quy t\u1eafc t\u1ed3n t\u1ea1i, do \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y hi\u1ec7u qu\u1ea3 nh\u1ea5t con \u0111\u01b0\u1eddng th\u00f4ng qua ch\u00fang.<\/p>\n<hr \/>\n<h2>K\u1ef9 Thu\u1eadt Ch\u00ednh X\u00e1c Ch\u00fa \u00dd<\/h2>\n<p><strong>Ti\u00eau Chu\u1ea9n V\u00e0 Ngu\u1ed3n Tham Kh\u1ea3o<\/strong><\/p>\n<ul>\n<li><strong>\u0110\u01af\u1ee2C ... 705.12(B):<\/strong> Vi\u1ec7c t\u1ea3i-b\u00ean ngu\u1ed3n k\u1ebft n\u1ed1i v\u00e0 c\u00e1c 120% cai tr\u1ecb ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n.<\/li>\n<li><strong>\u0110\u01af\u1ee2C ... 220:<\/strong> Chi nh\u00e1nh-m\u1ea1ch, khay v\u00e0 ph\u1ee5c v\u1ee5 t\u1ea3i t\u00ednh to\u00e1n y\u00eau c\u1ea7u \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh n\u1ebfu m\u1ed9t ch\u00ednh ng\u1eaft derate \u0111\u01b0\u1ee3c an to\u00e0n.<\/li>\n<li><strong>\u0110\u01af\u1ee2C ... 230.82:<\/strong> Vi\u1ec7c b\u00ean cung (B\u00ean D\u00f2ng) k\u1ebft n\u1ed1i.<\/li>\n<\/ul>\n<p><strong>K\u1ecbp Th\u1eddi Tuy\u00ean B\u1ed1<\/strong><\/p>\n<p>C\u00e1c t\u00ednh to\u00e1n v\u00e0 gi\u1ea3i th\u00edch trong b\u00e0i b\u00e1o n\u00e0y \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean Lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia (\u0110\u01af\u1ee2C...). Trong khi c\u1ee5 th\u1ec3 th\u00f4ng qua n\u0103m (2017 n\u0103m 2020, 2023) kh\u00e1c nhau c\u1ee7a bang v\u00e0 th\u00e0nh ph\u1ed1, 120% nguy\u00ean t\u1eafc v\u1eabn c\u00f2n m\u1ed9t c\u01a1 b\u1ea3n chu\u1ea9n cho d\u00e2n c\u01b0 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi k\u1ebft n\u1ed1i nh\u01b0 c\u1ee7a th\u00e1ng m\u01b0\u1eddi 2025. Lu\u00f4n lu\u00f4n ki\u1ec3m tra \u0111\u1ecba ph\u01b0\u01a1ng ti\u1ec7n \u00edch y\u00eau c\u1ea7u v\u00e0 th\u00e0nh ph\u1ed1 m\u00e3 s\u1eeda \u0111\u1ed5i tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>You\u2019ve done the math. The ROI on that 8kW solar system looks fantastic. The panels are selected, the inverter is spec\u2019d, and the installer is ready to go. Then the permit application comes back denied. The reason? Your trusty old 125A electrical panel &#8220;can\u2019t handle&#8221; the solar backfeed. The installer hands you a new quote: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19915,"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-19902","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\/19902","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=19902"}],"version-history":[{"count":7,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19902\/revisions"}],"predecessor-version":[{"id":19914,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19902\/revisions\/19914"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/19915"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=19902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=19902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=19902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}