{"id":18585,"date":"2025-07-18T14:40:19","date_gmt":"2025-07-18T06:40:19","guid":{"rendered":"https:\/\/viox.com\/?p=18585"},"modified":"2025-07-18T14:40:21","modified_gmt":"2025-07-18T06:40:21","slug":"can-junction-boxes-be-behind-drywall","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/can-junction-boxes-be-behind-drywall\/","title":{"rendered":"H\u1ed9p n\u1ed1i c\u00f3 th\u1ec3 \u1edf ph\u00eda sau t\u01b0\u1eddng th\u1ea1ch cao kh\u00f4ng?"},"content":{"rendered":"<div class=\"product-intro\"><strong>C\u00e2u Tr\u1ea3 L\u1eddi Tr\u1ef1c Ti\u1ebfp:<\/strong> Kh\u00f4ng, h\u1ed9p n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u1ea9n ho\u00e0n to\u00e0n sau t\u01b0\u1eddng th\u1ea1ch cao. Theo Quy \u0111\u1ecbnh \u0110i\u1ec7n Qu\u1ed1c gia (NEC), t\u1ea5t c\u1ea3 h\u1ed9p n\u1ed1i ph\u1ea3i lu\u00f4n d\u1ec5 ti\u1ebfp c\u1eadn m\u00e0 kh\u00f4ng c\u1ea7n th\u00e1o d\u1ee1 b\u1ea5t k\u1ef3 b\u1ed9 ph\u1eadn n\u00e0o c\u1ee7a k\u1ebft c\u1ea5u t\u00f2a nh\u00e0 ho\u1eb7c v\u1eadt li\u1ec7u ho\u00e0n thi\u1ec7n. Y\u00eau c\u1ea7u an to\u00e0n quan tr\u1ecdng n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 \u0111i\u1ec7n v\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c ti\u1ebfp c\u1eadn b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch.<\/div>\n<div class=\"product-intro\">\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-18587\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall.webp\" alt=\"wire under drywall\" width=\"800\" height=\"427\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall-300x160.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall-768x410.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall-18x10.webp 18w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/07\/wire-under-drywall-600x320.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Hi\u1ec3u r\u00f5 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1ee7a h\u1ed9p n\u1ed1i l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n an to\u00e0n, tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 tr\u00e1nh s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m. Cho d\u00f9 b\u1ea1n l\u00e0 ch\u1ee7 nh\u00e0 \u0111ang l\u00ean k\u1ebf ho\u1ea1ch c\u1ea3i t\u1ea1o hay th\u1ee3 \u0111i\u1ec7n chuy\u00ean nghi\u1ec7p, h\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ecdi th\u00f4ng tin b\u1ea1n c\u1ea7n v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t h\u1ed9p n\u1ed1i v\u00e0 c\u00e1c y\u00eau c\u1ea7u ti\u1ebfp c\u1eadn ph\u00f9 h\u1ee3p.<\/p>\n<h2>H\u1ed9p n\u1ed1i l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn l\u1ea1i quan tr\u1ecdng<\/h2>\n<p><img decoding=\"async\" class=\"alignnone  wp-image-4248\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series.webp\" alt=\"\" width=\"547\" height=\"547\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/06\/Waterproof-Junction-Box-Series-100x100.webp 100w\" sizes=\"(max-width: 547px) 100vw, 547px\" \/><\/p>\n<p>M\u1ed9t<a href=\"https:\/\/test.viox.com\/vi\/junction-box-manufacturer\/\"> h\u1ed9p n\u1ed1i<\/a> l\u00e0 m\u1ed9t v\u1ecf h\u1ed9p \u0111i\u1ec7n ch\u1ee9a c\u00e1c k\u1ebft n\u1ed1i d\u00e2y, m\u1ed1i n\u1ed1i ho\u1eb7c thi\u1ebft b\u1ecb \u0111i\u1ec7n. C\u00e1c h\u1ed9p n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 th\u00e0nh ph\u1ea7n an to\u00e0n quan tr\u1ecdng b\u1eb1ng c\u00e1ch:<\/p>\n<ul>\n<li>Ch\u1ee9a h\u1ed3 quang \u0111i\u1ec7n v\u00e0 tia l\u1eeda \u0111i\u1ec7n<\/li>\n<li>B\u1ea3o v\u1ec7 k\u1ebft n\u1ed1i d\u00e2y kh\u1ecfi h\u01b0 h\u1ecfng v\u1eadt l\u00fd<\/li>\n<li>Ng\u0103n ng\u1eeba ch\u00e1y \u0111i\u1ec7n lan r\u1ed9ng<\/li>\n<li>Cung c\u1ea5p c\u00e1c \u0111i\u1ec3m truy c\u1eadp c\u00f3 t\u1ed5 ch\u1ee9c cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/li>\n<\/ul>\n<p><strong>T\u1ea1i sao h\u1ed9p n\u1ed1i ph\u1ea3i lu\u00f4n d\u1ec5 ti\u1ebfp c\u1eadn:<\/strong><\/p>\n<p>Ti\u00eau chu\u1ea9n NEC y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn v\u00ec c\u00e1c k\u1ebft n\u1ed1i \u0111i\u1ec7n c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng theo th\u1eddi gian, \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m tra, b\u1ea3o tr\u00ec ho\u1eb7c s\u1eeda ch\u1eefa. C\u00e1c h\u1ed9p n\u1ed1i \u1ea9n t\u1ea1o ra nh\u1eefng t\u00ecnh hu\u1ed1ng nguy hi\u1ec3m khi:<\/p>\n<ul>\n<li>Kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh nhanh ch\u00f3ng c\u00e1c k\u1ebft n\u1ed1i b\u1ecb l\u1ed7i<\/li>\n<li>Vi\u1ec7c t\u1eaft kh\u1ea9n c\u1ea5p tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi<\/li>\n<li>Nguy c\u01a1 ch\u00e1y n\u1ed5 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n<\/li>\n<li>Vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111i\u1ec7n tr\u1edf n\u00ean c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n<\/li>\n<\/ul>\n<h2>Y\u00eau c\u1ea7u c\u1ee7a B\u1ed9 lu\u1eadt NEC v\u1ec1 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn h\u1ed9p n\u1ed1i<\/h2>\n<h3>\u0110i\u1ec1u 314.29: Y\u00eau c\u1ea7u v\u1ec1 quy\u1ec1n truy c\u1eadp h\u1ed9p n\u1ed1i<\/h3>\n<p>B\u1ed9 lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia n\u00eau r\u00f5 trong <a href=\"https:\/\/up.codes\/s\/boxes-conduit-bodies-and-handhole-enclosures-to-be-accessible\" rel=\"nofollow noopener\" target=\"_blank\">\u0110i\u1ec1u 314.29<\/a> C\u00e1c h\u1ed9p n\u1ed1i ph\u1ea3i d\u1ec5 ti\u1ebfp c\u1eadn. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n<p><strong>\u0110\u1ecbnh ngh\u0129a \u201cC\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn\u201d theo NEC:<\/strong><\/p>\n<ul>\n<li>Ch\u1ea5p nh\u1eadn ti\u1ebfp c\u1eadn g\u1ea7n<\/li>\n<li>Kh\u00f4ng b\u1ecb \u0111\u00f3ng v\u0129nh vi\u1ec5n b\u1edfi k\u1ebft c\u1ea5u t\u00f2a nh\u00e0<\/li>\n<li>Kh\u00f4ng y\u00eau c\u1ea7u th\u00e1o d\u1ee1 c\u00e1c t\u1ea5m, c\u1eeda ra v\u00e0o ho\u1eb7c c\u00e1c y\u1ebfu t\u1ed1 x\u00e2y d\u1ef1ng t\u01b0\u01a1ng t\u1ef1<\/li>\n<li>D\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn \u0111\u1ec3 ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec<\/li>\n<\/ul>\n<h3>C\u00e1c \u0111i\u1ec3m tu\u00e2n th\u1ee7 m\u00e3 ch\u00ednh<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Y\u00eau c\u1ea7u<\/th>\n<th>Ph\u1ea7n m\u00e3<\/th>\n<th>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf<\/th>\n<\/tr>\n<tr>\n<td>Ph\u1ea3i c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c<\/td>\n<td>314.29<\/td>\n<td>Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p che ph\u1ee7 b\u1eb1ng t\u01b0\u1eddng th\u1ea1ch cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1eb1ng sau c\u00e1c t\u1ea5m c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<\/td>\n<td>314.29 Ngo\u1ea1i l\u1ec7<\/td>\n<td>Ch\u1ec9 t\u1ee7 ho\u1eb7c t\u1ea5m c\u1ed1 \u0111\u1ecbnh<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u00e1nh d\u1ea5u\/ghi nh\u00e3n \u0111\u00fang c\u00e1ch<\/td>\n<td>110.22<\/td>\n<td>Y\u00eau c\u1ea7u x\u00e1c minh danh t\u00ednh r\u00f5 r\u00e0ng<\/td>\n<\/tr>\n<tr>\n<td>Kho\u1ea3ng tr\u1ed1ng kh\u00f4ng gian l\u00e0m vi\u1ec7c<\/td>\n<td>110.26<\/td>\n<td>Kh\u00f4ng gian truy c\u1eadp t\u1ed1i thi\u1ec3u 30 inch<\/td>\n<\/tr>\n<tr>\n<td>Ti\u1ebfp \u0111\u1ecba thi\u1ebft b\u1ecb<\/td>\n<td>250.148<\/td>\n<td>Ti\u1ebfp \u0111\u1ea5t li\u00ean t\u1ee5c th\u00edch h\u1ee3p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p><strong>Dr. Tr\u01b0\u1edbc An To\u00e0n C\u1ea3nh B\u00e1o:<\/strong> Vi\u1ec7c che h\u1ed9p n\u1ed1i b\u1eb1ng v\u00e1ch th\u1ea1ch cao s\u1ebd vi ph\u1ea1m quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n v\u00e0 g\u00e2y ra nguy c\u01a1 h\u1ecfa ho\u1ea1n v\u00e0 \u0111i\u1ec7n gi\u1eadt nghi\u00eam tr\u1ecdng. Lu\u00f4n tham kh\u1ea3o \u00fd ki\u1ebfn th\u1ee3 \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c \u0111i\u1ec7n.<\/p>\n<\/blockquote>\n<h2>\u0110i\u1ec1u g\u00ec l\u00e0m cho h\u1ed9p n\u1ed1i &quot;c\u00f3 th\u1ec3 truy c\u1eadp&quot; so v\u1edbi &quot;\u1ea9n&quot;<\/h2>\n<p>Vi\u1ec7c hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e0i \u0111\u1eb7t c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0 c\u00e0i \u0111\u1eb7t \u1ea9n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh:<\/p>\n<h3>Y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t c\u00f3 th\u1ec3 truy c\u1eadp<\/h3>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p truy c\u1eadp th\u00edch h\u1ee3p:<\/strong><\/p>\n<ol>\n<li><strong>H\u1ed9p g\u1eafn tr\u00ean b\u1ec1 m\u1eb7t<\/strong> tr\u00ean nh\u1eefng b\u1ee9c t\u01b0\u1eddng \u0111\u00e3 ho\u00e0n thi\u1ec7n<\/li>\n<li><strong>H\u1ed9p l\u00f5m<\/strong> v\u1edbi t\u1ea5m che c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<\/li>\n<li><strong>H\u1ed9p ph\u00eda sau c\u00e1c t\u1ea5m c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<\/strong> (c\u1eeda t\u1ee7, t\u1ea5m ch\u1eafn c\u1eeda)<\/li>\n<li><strong>H\u1ed9p g\u1eafn tr\u1ea7n<\/strong> v\u1edbi quy\u1ec1n truy c\u1eadp th\u1ea3 xu\u1ed1ng<\/li>\n<li><strong>L\u1eafp \u0111\u1eb7t \u1edf t\u1ea7ng h\u1ea7m ho\u1eb7c kh\u00f4ng gian thu h\u1eb9p<\/strong> v\u1edbi nh\u1eefng con \u0111\u01b0\u1eddng r\u00f5 r\u00e0ng<\/li>\n<\/ol>\n<h3>C\u00e0i \u0111\u1eb7t \u1ea9n b\u1ecb c\u1ea5m<\/h3>\n<p><strong>Vi ph\u1ea1m quy t\u1eafc bao g\u1ed3m:<\/strong><\/p>\n<ul>\n<li>H\u1ed9p n\u1ed1i \u0111\u01b0\u1ee3c \u1ed1p t\u01b0\u1eddng th\u1ea1ch cao ho\u00e0n to\u00e0n<\/li>\n<li>C\u00e1c h\u1ed9p ph\u00eda sau nh\u1eefng b\u1ee9c t\u01b0\u1eddng c\u1ed1 \u0111\u1ecbnh<\/li>\n<li>C\u00e1c c\u00f4ng tr\u00ecnh c\u1ea7n ph\u00e1 d\u1ee1 k\u1ebft c\u1ea5u \u0111\u1ec3 ti\u1ebfp c\u1eadn<\/li>\n<li>H\u1ed9p \u0111\u01b0\u1ee3c che ph\u1ee7 b\u1eb1ng v\u1eadt li\u1ec7u s\u00e0n ho\u1eb7c tr\u1ea7n<\/li>\n<li>C\u00e1c m\u1ed1i n\u1ed1i \u1ea9n kh\u00f4ng c\u00f3 h\u1ed9p n\u1ed1i th\u00edch h\u1ee3p<\/li>\n<\/ul>\n<h2>So s\u00e1nh: L\u1eafp \u0111\u1eb7t h\u1ed9p n\u1ed1i \u1ea9n v\u00e0 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Kh\u00eda c\u1ea1nh<\/th>\n<th>C\u00e0i \u0111\u1eb7t c\u00f3 th\u1ec3 truy c\u1eadp<\/th>\n<th>C\u00e0i \u0111\u1eb7t \u1ea9n<\/th>\n<\/tr>\n<tr>\n<td><strong>M\u00e3 Ph\u00f9 H\u1ee3p<\/strong><\/td>\n<td>\u2705 Tu\u00e2n th\u1ee7 NEC<\/td>\n<td>\u274c Vi ph\u1ea1m m\u00e3<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1ee9c \u0111\u1ed9 an to\u00e0n<\/strong><\/td>\n<td>\u2705 Cao \u2013 D\u1ec5 d\u00e0ng ki\u1ec3m tra<\/td>\n<td>\u274c Nguy hi\u1ec3m \u2013 Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ea3o tr\u00ec<\/strong><\/td>\n<td>\u2705 S\u1eeda ch\u1eefa\/c\u1eadp nh\u1eadt \u0111\u01a1n gi\u1ea3n<\/td>\n<td>\u274c C\u1ea7n ph\u1ea3i ph\u00e1 d\u1ee1<\/td>\n<\/tr>\n<tr>\n<td><strong>An to\u00e0n ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y<\/strong><\/td>\n<td>\u2705 X\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 nhanh ch\u00f3ng<\/td>\n<td>\u274c Nguy c\u01a1 h\u1ecfa ho\u1ea1n ti\u1ec1m \u1ea9n<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ea3o hi\u1ec3m<\/strong><\/td>\n<td>\u2705 B\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n<\/td>\n<td>\u274c C\u00f3 th\u1ec3 h\u1ee7y b\u1ecf c\u00e1c khi\u1ebfu n\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u00e1 tr\u1ecb b\u00e1n l\u1ea1i<\/strong><\/td>\n<td>\u2705 T\u0103ng gi\u00e1 tr\u1ecb ng\u00f4i nh\u00e0<\/td>\n<td>\u274c Gi\u1ea3m kh\u1ea3 n\u0103ng ti\u1ebfp th\u1ecb<\/td>\n<\/tr>\n<tr>\n<td><strong>Tu\u00e2n th\u1ee7 ki\u1ec3m tra<\/strong><\/td>\n<td>\u2705 \u0110\u1ea1t ki\u1ec3m tra \u0111i\u1ec7n<\/td>\n<td>\u274c Kh\u00f4ng \u0111\u1ea1t ki\u1ec3m tra<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p<\/strong><\/td>\n<td>\u2705 \u0110\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n th\u1ee3 \u0111i\u1ec7n<\/td>\n<td>\u274c C\u1ea7n ch\u1ec9nh s\u1eeda<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Gi\u1ea3i ph\u00e1p b\u1ed1 tr\u00ed h\u1ed9p n\u1ed1i \u0111\u00fang c\u00e1ch<\/h2>\n<h3>T\u00f9y ch\u1ecdn 1: L\u1eafp \u0111\u1eb7t tr\u00ean b\u1ec1 m\u1eb7t<\/h3>\n<p><strong>T\u1ed1t nh\u1ea5t cho:<\/strong> T\u1ea7ng h\u1ea7m \u0111\u00e3 ho\u00e0n thi\u1ec7n, ph\u00f2ng ti\u1ec7n \u00edch, kh\u00f4ng gian th\u01b0\u01a1ng m\u1ea1i<\/p>\n<p><strong>Quy tr\u00ecnh c\u00e0i \u0111\u1eb7t:<\/strong><\/p>\n<ol>\n<li>L\u1eafp h\u1ed9p n\u1ed1i tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ec1 m\u1eb7t t\u01b0\u1eddng<\/li>\n<li>L\u1eafp \u0111\u1eb7t t\u1ea5m che ph\u00f9 h\u1ee3p<\/li>\n<li>\u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch l\u00e0m vi\u1ec7c 30 inch<\/li>\n<li>Ghi nh\u00e3n n\u1ed9i dung h\u1ed9p r\u00f5 r\u00e0ng<\/li>\n<li>Duy tr\u00ec \u0111\u1ed9 d\u00e0i d\u00e2y d\u1eabn th\u00edch h\u1ee3p<\/li>\n<\/ol>\n<h3>T\u00f9y ch\u1ecdn 2: L\u00f5m ph\u00eda sau t\u1ea5m ti\u1ebfp c\u1eadn<\/h3>\n<p><strong>T\u1ed1t nh\u1ea5t cho:<\/strong> Kh\u00f4ng gian s\u1ed1ng \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n nh\u1eafc v\u1ec1 m\u1eb7t th\u1ea9m m\u1ef9<\/p>\n<p><strong>Y\u00eau c\u1ea7u:<\/strong><\/p>\n<ul>\n<li>Ch\u1ec9 c\u00f3 t\u1ea5m truy c\u1eadp c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<\/li>\n<li>Kh\u00f4ng c\u1ea7n d\u1ee5ng c\u1ee5 \u0111\u1ec3 th\u00e1o t\u1ea5m<\/li>\n<li>\u0110\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng \u0111\u01b0\u1eddng v\u00e0o \u0111i\u1ec7n<\/li>\n<li>C\u00e1c t\u1ea5m ph\u1ea3i m\u1edf \u0111\u1ec3 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn to\u00e0n b\u1ed9 h\u1ed9p<\/li>\n<li>Kh\u00f4ng th\u1ec3 l\u1eafp \u0111\u1eb7t t\u1ee7 c\u1ed1 \u0111\u1ecbnh<\/li>\n<\/ul>\n<h3>L\u1ef1a ch\u1ecdn 3: L\u1eafp \u0111\u1eb7t \u1edf t\u1ea7ng h\u1ea7m ho\u1eb7c kh\u00f4ng gian thu h\u1eb9p<\/h3>\n<p><strong>T\u1ed1t nh\u1ea5t cho:<\/strong> X\u00e2y d\u1ef1ng m\u1edbi v\u00e0 c\u1ea3i t\u1ea1o l\u1edbn<\/p>\n<p><strong>Y\u00eau c\u1ea7u v\u1ec1 m\u00e3:<\/strong><\/p>\n<ul>\n<li>Kho\u1ea3ng kh\u00f4ng tr\u00ean \u0111\u1ea7u th\u00edch h\u1ee3p (t\u1ed1i thi\u1ec3u 6 feet n\u1ebfu c\u00f3 th\u1ec3)<\/li>\n<li>\u0110\u01b0\u1eddng \u0111i an to\u00e0n<\/li>\n<li>\u00c1nh s\u00e1ng th\u00edch h\u1ee3p \u0111\u1ec3 ki\u1ec3m tra<\/li>\n<li>B\u1ea3o v\u1ec7 kh\u1ecfi thi\u1ec7t h\u1ea1i v\u1eadt l\u00fd<\/li>\n<li>\u0110\u00e1nh gi\u00e1 m\u00f4i tr\u01b0\u1eddng ph\u00f9 h\u1ee3p<\/li>\n<\/ul>\n<h2>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc: L\u00e0m cho h\u1ed9p n\u1ed1i \u1ea9n tu\u00e2n th\u1ee7 m\u00e3<\/h2>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c h\u1ed9p \u1ea9n<\/h3>\n<ol>\n<li>T\u1eaft ngu\u1ed3n \u0111i\u1ec7n \u1edf c\u1ea7u dao ch\u00ednh<\/li>\n<li>S\u1eed d\u1ee5ng m\u00e1y d\u00f2 \u0111inh t\u00e1n c\u00f3 ch\u1ee9c n\u0103ng ph\u00e1t hi\u1ec7n \u0111i\u1ec7n<\/li>\n<li>Ki\u1ec3m tra c\u00e1c \u0111i\u1ec3m \u1ea5m tr\u00ean t\u01b0\u1eddng (c\u00f3 th\u1ec3 ch\u1ec9 ra c\u00e1c k\u1ebft n\u1ed1i \u1ea9n)<\/li>\n<li>Theo d\u00f5i \u0111\u01b0\u1eddng \u0111i c\u1ee7a d\u00e2y t\u1eeb c\u00e1c t\u1ea5m v\u00e0 \u0111\u1ed3 \u0111\u1ea1c<\/li>\n<li>Ghi l\u1ea1i v\u1ecb tr\u00ed b\u1eb1ng h\u00ecnh \u1ea3nh v\u00e0 s\u1ed1 \u0111o<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 2: T\u1ea1o quy\u1ec1n truy c\u1eadp ph\u00f9 h\u1ee3p<\/h3>\n<ol>\n<li>\u0110\u00e1nh d\u1ea5u v\u1ecb tr\u00ed h\u1ed9p ch\u00ednh x\u00e1c<\/li>\n<li>C\u1eaft v\u00e1ch th\u1ea1ch cao \u0111\u1ec3 l\u1ed9 ho\u00e0n to\u00e0n h\u1ed9p<\/li>\n<li>L\u1eafp h\u1ed9p n\u1ed1i th\u00edch h\u1ee3p n\u1ebfu thi\u1ebfu<\/li>\n<li>\u0110\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i d\u00e2y \u0111\u00fang c\u00e1ch v\u00e0 m\u1ed1i n\u1ed1i ch\u1eafc ch\u1eafn<\/li>\n<li>X\u00e1c minh kho\u1ea3ng c\u00e1ch kh\u00f4ng gian l\u00e0m vi\u1ec7c ph\u00f9 h\u1ee3p<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 3: C\u00e0i \u0111\u1eb7t Access Solutions<\/h3>\n<ol>\n<li><strong>Ch\u1ecdn M\u1ed9t:<\/strong> L\u1eafp \u0111\u1eb7t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n truy c\u1eadp c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn B:<\/strong> Di chuy\u1ec3n h\u1ed9p \u0111\u1ebfn v\u1ecb tr\u00ed d\u1ec5 ti\u1ebfp c\u1eadn<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn C:<\/strong> Thay th\u1ebf b\u1eb1ng l\u1eafp \u0111\u1eb7t tr\u00ean b\u1ec1 m\u1eb7t<\/li>\n<li>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a m\u00e3 hi\u1ec7n h\u00e0nh<\/li>\n<li>Ki\u1ec3m tra t\u00ednh li\u00ean t\u1ee5c v\u1ec1 \u0111i\u1ec7n v\u00e0 n\u1ed1i \u0111\u1ea5t th\u00edch h\u1ee3p<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 4: Ki\u1ec3m tra cu\u1ed1i c\u00f9ng v\u00e0 l\u1eadp t\u00e0i li\u1ec7u<\/h3>\n<ol>\n<li>L\u00ean l\u1ecbch ki\u1ec3m tra \u0111i\u1ec7n n\u1ebfu c\u1ea7n<\/li>\n<li>C\u1eadp nh\u1eadt danh m\u1ee5c t\u1ee7 \u0111i\u1ec7n<\/li>\n<li>Ch\u1ee5p \u1ea3nh qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t cu\u1ed1i c\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef<\/li>\n<li>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m truy c\u1eadp \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng<\/li>\n<li>Cung c\u1ea5p t\u00e0i li\u1ec7u cho ch\u1ee7 nh\u00e0<\/li>\n<\/ol>\n<blockquote>\n<p><strong>\ud83d\udca1 Chuy\u00ean Gia M\u1eb9o:<\/strong> Khi di d\u1eddi h\u1ed9p n\u1ed1i, h\u00e3y lu\u00f4n s\u1eed d\u1ee5ng d\u00e2y d\u1eabn c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p v\u00e0 duy tr\u00ec k\u1ef9 thu\u1eadt n\u1ed1i \u0111\u00fang c\u00e1ch. H\u1ed9p n\u1ed1i qu\u00e1 kh\u1ed5 mang l\u1ea1i kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn t\u1ed1t h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai.<\/p>\n<\/blockquote>\n<h2>C\u00e1c l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi truy c\u1eadp h\u1ed9p n\u1ed1i v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>Vi ph\u1ea1m 1: H\u1ed9p \u0111\u01b0\u1ee3c che ph\u1ee7 b\u1eb1ng t\u01b0\u1eddng th\u1ea1ch cao<\/h3>\n<p><strong>V\u1ea5n \u0111\u1ec1:<\/strong> Che gi\u1ea5u ho\u00e0n to\u00e0n \u0111\u1eb1ng sau nh\u1eefng b\u1ee9c t\u01b0\u1eddng \u0111\u00e3 ho\u00e0n thi\u1ec7n<br \/><strong>Gi\u1ea3i ph\u00e1p:<\/strong> C\u1eaft l\u1ed7 m\u1edf v\u00e0 l\u1eafp t\u1ea5m c\u00f3 th\u1ec3 th\u00e1o r\u1eddi<br \/><strong>T\u00e1c \u0111\u1ed9ng v\u1ec1 chi ph\u00ed:<\/strong> $150-$300 m\u1ed7i h\u1ed9p s\u1eeda l\u1ed7i<\/p>\n<h3>Vi ph\u1ea1m 2: Kh\u00f4ng gian l\u00e0m vi\u1ec7c kh\u00f4ng \u0111\u1ee7<\/h3>\n<p><strong>V\u1ea5n \u0111\u1ec1:<\/strong> Kho\u1ea3ng c\u00e1ch ti\u1ebfp c\u1eadn d\u01b0\u1edbi 30 inch<br \/><strong>Gi\u1ea3i ph\u00e1p:<\/strong> Di chuy\u1ec3n h\u1ed9p ho\u1eb7c lo\u1ea1i b\u1ecf v\u1eadt c\u1ea3n<br \/><strong>M\u00e3 tham chi\u1ebfu:<\/strong> NEC 110.26<\/p>\n<h3>Vi ph\u1ea1m 3: B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n truy c\u1eadp kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u<\/h3>\n<p><strong>V\u1ea5n \u0111\u1ec1:<\/strong> T\u1ea5m pin \u1ea9n kh\u00f4ng c\u00f3 ch\u1ee9c n\u0103ng nh\u1eadn d\u1ea1ng \u0111i\u1ec7n<br \/><strong>Gi\u1ea3i ph\u00e1p:<\/strong> C\u00e0i \u0111\u1eb7t \u0111\u00fang \u0111i\u1ec7n c\u1ea3nh b\u00e1o nh\u00e3n<br \/><strong>Y\u00eau c\u1ea7u:<\/strong> Ti\u00eau chu\u1ea9n nh\u1eadn d\u1ea1ng NEC 110.22<\/p>\n<h3>Vi ph\u1ea1m 4: Truy c\u1eadp b\u1eb1ng c\u00f4ng c\u1ee5<\/h3>\n<p><strong>V\u1ea5n \u0111\u1ec1:<\/strong> C\u00e1c t\u1ea5m c\u1ea7n tua v\u00edt ho\u1eb7c d\u1ee5ng c\u1ee5 \u0111\u1eb7c bi\u1ec7t<br \/><strong>Gi\u1ea3i ph\u00e1p:<\/strong> L\u1eafp \u0111\u1eb7t ch\u1ed1t k\u00e9o b\u1eb1ng ng\u00f3n tay ho\u1eb7c ch\u1ed1t xoay m\u1ed9t ph\u1ea7n t\u01b0<br \/><strong>Ti\u00eau chu\u1ea9n:<\/strong> Truy c\u1eadp nhanh m\u00e0 kh\u00f4ng c\u1ea7n c\u00f4ng c\u1ee5<\/p>\n<h2>Nh\u1eefng c\u00e2n nh\u1eafc v\u1ec1 an to\u00e0n v\u00e0 khuy\u1ebfn ngh\u1ecb chuy\u00ean m\u00f4n<\/h2>\n<h3>C\u00e1c \u0111i\u1ec3m an to\u00e0n quan tr\u1ecdng<\/h3>\n<p><strong>\u26a0\ufe0f Ph\u00f2ng ng\u1eeba nguy c\u01a1 ch\u00e1y n\u1ed5:<\/strong><\/p>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c m\u1ed1i n\u1ed1i d\u00e2y ph\u1ea3i n\u1eb1m trong h\u1ed9p n\u1ed1i \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t<\/li>\n<li>K\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p gi\u00fap ng\u0103n ng\u1eeba qu\u00e1 nhi\u1ec7t<\/li>\n<li>B\u1ea3o v\u1ec7 ch\u1ed1ng ch\u1ea1m \u0111\u1ea5t khi \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u theo quy \u0111\u1ecbnh<\/li>\n<li>L\u1ecbch tr\u00ecnh ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean cho c\u00e1c c\u01a1 s\u1edf c\u0169<\/li>\n<\/ul>\n<p><strong>\u26a0\ufe0f Ph\u00f2ng ng\u1eeba \u0111i\u1ec7n gi\u1eadt:<\/strong><\/p>\n<ul>\n<li>Lu\u00f4n t\u1eaft ngu\u1ed3n \u0111i\u1ec7n tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c \u0111i\u1ec7n<\/li>\n<li>B\u00e0i ki\u1ec3m tra <a href=\"https:\/\/test.viox.com\/vi\/mcb\/\">m\u1ea1ch \u0111i\u1ec7n<\/a> v\u1edbi m\u00e1y ki\u1ec3m tra \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t<\/li>\n<li>Duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c c\u1ee7a h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t th\u00edch h\u1ee3p<\/li>\n<li>S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 c\u00e1 nh\u00e2n ph\u00f9 h\u1ee3p<\/li>\n<\/ul>\n<h3>Khi \u0111\u1ec3 G\u1ecdi m\u1ed9t ng\u01b0\u1eddi Chuy\u00ean nghi\u1ec7p<\/h3>\n<p><strong>Y\u00eau c\u1ea7u th\u1ee3 \u0111i\u1ec7n c\u00f3 gi\u1ea5y ph\u00e9p:<\/strong><\/p>\n<ul>\n<li>Di chuy\u1ec3n h\u1ed9p n\u1ed1i \u0111\u1ebfn v\u1ecb tr\u00ed m\u1edbi<\/li>\n<li>N\u00e2ng c\u1ea5p b\u1ea3ng \u0111i\u1ec7n ho\u1eb7c m\u1ea1ch \u0111i\u1ec7n<\/li>\n<li>L\u1eafp \u0111\u1eb7t m\u1ea1ch nh\u00e1nh m\u1edbi<\/li>\n<li>L\u00e0m vi\u1ec7c v\u1edbi m\u1ea1ch \u0111i\u1ec7n 240 v\u00f4n<\/li>\n<li>B\u1ea5t k\u1ef3 c\u00f4ng vi\u1ec7c n\u00e0o c\u1ea7n gi\u1ea5y ph\u00e9p \u0111i\u1ec7n<\/li>\n<\/ul>\n<p><strong>L\u1ee3i \u00edch ngh\u1ec1 nghi\u1ec7p:<\/strong><\/p>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 m\u00e3<\/li>\n<li>Vi\u1ec7c xin gi\u1ea5y ph\u00e9p h\u1ee3p l\u1ec7<\/li>\n<li>Ph\u1ea1m vi tr\u00e1ch nhi\u1ec7m b\u1ea3o hi\u1ec3m<\/li>\n<li>b\u1ea3o h\u00e0nh c\u1ee7a c\u00f4ng vi\u1ec7c \u0111i\u1ec7n<\/li>\n<li>Giao th\u1ee9c an to\u00e0n chuy\u00ean gia<\/li>\n<\/ul>\n<h2>Ph\u00e2n t\u00edch chi ph\u00ed: Gi\u1ea3i ph\u00e1p truy c\u1eadp h\u1ed9p n\u1ed1i<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Lo\u1ea1i gi\u1ea3i ph\u00e1p<\/th>\n<th>Chi ph\u00ed v\u1eadt li\u1ec7u<\/th>\n<th>Chi ph\u00ed lao \u0111\u1ed9ng<\/th>\n<th>T\u1ed5ng \u0111\u1ea7u t\u01b0<\/th>\n<th>D\u00f2ng th\u1eddi gian<\/th>\n<\/tr>\n<tr>\n<td><strong>L\u1eafp \u0111\u1eb7t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n truy c\u1eadp<\/strong><\/td>\n<td>$25-$50<\/td>\n<td>$100-$200<\/td>\n<td>$125-$250<\/td>\n<td>1-2 gi\u1edd<\/td>\n<\/tr>\n<tr>\n<td><strong>Chuy\u1ec3n \u0111\u1ed5i g\u1eafn tr\u00ean b\u1ec1 m\u1eb7t<\/strong><\/td>\n<td>$40-$80<\/td>\n<td>$150-$300<\/td>\n<td>$190-$380<\/td>\n<td>2-3 gi\u1edd<\/td>\n<\/tr>\n<tr>\n<td><strong>Di d\u1eddi h\u1ed9p<\/strong><\/td>\n<td>$60-$120<\/td>\n<td>$200-$400<\/td>\n<td>$260-$520<\/td>\n<td>3-4 gi\u1edd<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1eafp \u0111\u1eb7t m\u1ea1ch m\u1edbi<\/strong><\/td>\n<td>$150-$300<\/td>\n<td>$300-$600<\/td>\n<td>$450-$900<\/td>\n<td>4-6 gi\u1edd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p><strong>\ud83d\udca1 M\u1eb9o ti\u1ebft ki\u1ec7m chi ph\u00ed:<\/strong> X\u1eed l\u00fd nhi\u1ec1u l\u1ed7i h\u1ed9p n\u1ed1i ch\u1ec9 trong m\u1ed9t l\u1ea7n b\u1ea3o d\u01b0\u1ee1ng \u0111\u1ec3 gi\u1ea3m chi ph\u00ed nh\u00e2n c\u00f4ng. Nhi\u1ec1u th\u1ee3 \u0111i\u1ec7n cung c\u1ea5p d\u1ecbch v\u1ee5 tr\u1ecdn g\u00f3i cho vi\u1ec7c s\u1eeda ch\u1eefa nhi\u1ec1u h\u1ed9p n\u1ed1i.<\/p>\n<\/blockquote>\n<h2>Tham kh\u1ea3o nhanh: Danh s\u00e1ch ki\u1ec3m tra truy c\u1eadp h\u1ed9p n\u1ed1i<\/h2>\n<h3>Danh s\u00e1ch ki\u1ec3m tra tr\u01b0\u1edbc khi c\u00e0i \u0111\u1eb7t<\/h3>\n<ul>\n<li>X\u00e1c minh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u00e3 \u0111i\u1ec7n<\/li>\n<li>Ch\u1ec9 l\u1eadp k\u1ebf ho\u1ea1ch cho nh\u1eefng \u0111\u1ecba \u0111i\u1ec3m c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c<\/li>\n<li>\u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch l\u00e0m vi\u1ec7c \u0111\u1ea7y \u0111\u1ee7<\/li>\n<li>Ch\u1ecdn k\u00edch th\u01b0\u1edbc h\u1ed9p ph\u00f9 h\u1ee3p<\/li>\n<li>X\u00e1c nh\u1eadn x\u1ebfp h\u1ea1ng m\u00f4i tr\u01b0\u1eddng ph\u00f9 h\u1ee3p<\/li>\n<\/ul>\n<h3>X\u00e1c minh sau khi c\u00e0i \u0111\u1eb7t<\/h3>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c h\u1ed9p \u0111\u1ec1u d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn<\/li>\n<li>\u0110\u00e3 l\u1eafp \u0111\u1eb7t t\u1ea5m che ph\u00f9 h\u1ee3p<\/li>\n<li>Nh\u00e3n nh\u1eadn d\u1ea1ng r\u00f5 r\u00e0ng<\/li>\n<li>X\u00e1c minh tu\u00e2n th\u1ee7 m\u00e3<\/li>\n<li>\u0110\u00e3 l\u00ean l\u1ecbch ki\u1ec3m tra \u0111i\u1ec7n<\/li>\n<\/ul>\n<h3>L\u1ecbch Tr\u00ecnh B\u1ea3o Tr\u00ec<\/h3>\n<ul>\n<li>Ki\u1ec3m tra tr\u1ef1c quan h\u00e0ng n\u0103m<\/li>\n<li>Ki\u1ec3m tra c\u00e1c k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo<\/li>\n<li>X\u00e1c minh t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a t\u1ea5m che<\/li>\n<li>B\u00e0i ki\u1ec3m tra <a href=\"https:\/\/test.viox.com\/vi\/understanding-ground-fault-protection\/\">GFCI<\/a> b\u1ea3o v\u1ec7 khi \u00e1p d\u1ee5ng<\/li>\n<li>C\u1eadp nh\u1eadt t\u00e0i li\u1ec7u \u0111i\u1ec7n<\/li>\n<\/ul>\n<h2>Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n<h3>T\u00f4i c\u00f3 th\u1ec3 l\u1eafp h\u1ed9p n\u1ed1i ph\u00eda sau t\u1ea5m \u1ed1p c\u00f3 th\u1ec3 th\u00e1o r\u1eddi kh\u00f4ng?<\/h3>\n<p>C\u00f3, h\u1ed9p n\u1ed1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ph\u00eda sau c\u00e1c t\u1ea5m \u1ed1p c\u00f3 th\u1ec3 th\u00e1o r\u1eddi, mi\u1ec5n l\u00e0 t\u1ea5m \u1ed1p kh\u00f4ng c\u1ea7n d\u1ee5ng c\u1ee5 \u0111\u1ec3 th\u00e1o r\u1eddi v\u00e0 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn ho\u00e0n to\u00e0n h\u1ed9p. T\u1ea5m \u1ed1p ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng l\u00e0 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn b\u1eb1ng \u0111i\u1ec7n.<\/p>\n<h3>\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu t\u00f4i l\u1eafp t\u01b0\u1eddng th\u1ea1ch cao l\u00ean h\u1ed9p n\u1ed1i?<\/h3>\n<p>Vi\u1ec7c che h\u1ed9p n\u1ed1i b\u1eb1ng v\u00e1ch th\u1ea1ch cao s\u1ebd vi ph\u1ea1m quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n, g\u00e2y nguy c\u01a1 h\u1ecfa ho\u1ea1n v\u00e0 c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t hi\u1ec7u l\u1ef1c b\u1ea3o hi\u1ec3m nh\u00e0 \u1edf. B\u1ea1n ph\u1ea3i t\u1ea1o l\u1ed1i ra v\u00e0o ph\u00f9 h\u1ee3p ho\u1eb7c di d\u1eddi h\u1ed9p n\u1ed1i \u0111\u1ebfn v\u1ecb tr\u00ed d\u1ec5 ti\u1ebfp c\u1eadn.<\/p>\n<h3>C\u1ea7n c\u00f3 kho\u1ea3ng tr\u1ed1ng bao nhi\u00eau xung quanh h\u1ed9p n\u1ed1i?<\/h3>\n<p>Ti\u00eau chu\u1ea9n NEC y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u 30 inch (76,5 cm) tr\u01b0\u1edbc thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u1ec3 ti\u1ebfp c\u1eadn v\u00e0 b\u1ea3o tr\u00ec an to\u00e0n. Kho\u1ea3ng c\u00e1ch b\u00ean h\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3.<\/p>\n<h3>H\u1ed9p n\u1ed1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp trong t\u01b0\u1eddng gi\u1eefa c\u00e1c ph\u00f2ng kh\u00f4ng?<\/h3>\n<p>C\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t h\u1ed9p n\u1ed1i trong t\u01b0\u1eddng n\u1ed9i th\u1ea5t n\u1ebfu ch\u00fang c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c t\u1eeb \u00edt nh\u1ea5t m\u1ed9t ph\u00eda. C\u1ea3 hai ph\u00eda \u0111\u1ec1u kh\u00f4ng c\u1ea7n ti\u1ebfp c\u1eadn, nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p che gi\u1ea5u ho\u00e0n to\u00e0n.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa h\u1ed9p n\u1ed1i v\u00e0 h\u1ed9p \u1ed5 c\u1eafm l\u00e0 g\u00ec?<\/h3>\n<p>H\u1ed9p n\u1ed1i ch\u1ec9 ch\u1ee9a c\u00e1c m\u1ed1i n\u1ed1i v\u00e0 k\u1ebft n\u1ed1i d\u00e2y, trong khi h\u1ed9p \u1ed5 c\u1eafm ch\u1ee9a \u1ed5 c\u1eafm, c\u00f4ng t\u1eafc ho\u1eb7c \u0111\u1ed3 \u0111\u1ea1c c\u1ed1 \u0111\u1ecbnh. C\u1ea3 hai \u0111\u1ec1u ph\u1ea3i d\u1ec5 ti\u1ebfp c\u1eadn, nh\u01b0ng h\u1ed9p \u1ed5 c\u1eafm t\u1ef1 nhi\u00ean cho ph\u00e9p ti\u1ebfp c\u1eadn th\u00f4ng qua c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a ch\u00fang.<\/p>\n<h3>C\u00f3 ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c m\u1ed1i n\u1ed1i d\u00e2y \u0111\u1ec1u c\u1ea7n h\u1ed9p n\u1ed1i kh\u00f4ng?<\/h3>\n<p>C\u00f3, t\u1ea5t c\u1ea3 c\u00e1c m\u1ed1i n\u1ed1i d\u00e2y ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t trong h\u1ed9p \u0111i\u1ec7n \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t. Vi\u1ec7c n\u1ed1i tr\u1ef1c ti\u1ebfp trong t\u01b0\u1eddng, g\u00e1c m\u00e1i ho\u1eb7c c\u00e1c kh\u00f4ng gian k\u00edn kh\u00e1c m\u00e0 kh\u00f4ng c\u00f3 v\u1ecf b\u1ecdc ph\u00f9 h\u1ee3p s\u1ebd vi ph\u1ea1m quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ecm h\u1ed9p n\u1ed1i \u1ea9n trong nh\u00e0 t\u00f4i?<\/h3>\n<p>S\u1eed d\u1ee5ng m\u00e1y d\u00f2 m\u1ea1ch \u0111i\u1ec7n, ch\u1ee5p \u1ea3nh nhi\u1ec7t ho\u1eb7c thu\u00ea th\u1ee3 \u0111i\u1ec7n c\u00f3 thi\u1ebft b\u1ecb ph\u00e1t hi\u1ec7n chuy\u00ean nghi\u1ec7p. Ki\u1ec3m tra c\u00e1c khu v\u1ef1c c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u m\u1ea1ch \u0111i\u1ec7n h\u1ed9i t\u1ee5, ch\u1eb3ng h\u1ea1n nh\u01b0 g\u00f3c ph\u00f2ng ho\u1eb7c \u0111\u1ed3 \u0111\u1ea1c tr\u00ean tr\u1ea7n nh\u00e0.<\/p>\n<h3>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u1ee7 \u0111\u1ec3 l\u1eafp h\u1ed9p n\u1ed1i kh\u00f4ng?<\/h3>\n<p>T\u1ea5m t\u1ee7 c\u00f3 th\u1ec3 th\u00e1o r\u1eddi c\u00f3 th\u1ec3 gi\u00fap ti\u1ebfp c\u1eadn h\u1ed9p n\u1ed1i, nh\u01b0ng vi\u1ec7c l\u1eafp \u0111\u1eb7t t\u1ee7 c\u1ed1 \u0111\u1ecbnh kh\u00f4ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n. L\u1ed1i v\u00e0o ph\u1ea3i d\u1ec5 d\u00e0ng th\u00e1o r\u1eddi m\u00e0 kh\u00f4ng c\u1ea7n d\u1ee5ng c\u1ee5 v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng.<\/p>\n<h2>Khuy\u1ebfn ngh\u1ecb c\u1ee7a chuy\u00ean gia v\u00e0 th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t<\/h2>\n<h3>Ti\u00eau chu\u1ea9n l\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p<\/h3>\n<p><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t c\u1ee7a ng\u00e0nh:<\/strong><\/p>\n<ol>\n<li><strong>H\u1ed9p qu\u00e1 kh\u1ed5<\/strong> cung c\u1ea5p kh\u1ea3 n\u0103ng truy c\u1eadp t\u1ed1t h\u01a1n v\u00e0 m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng d\u00e1n nh\u00e3n nh\u1ea5t qu\u00e1n<\/strong> c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 b\u1ea3o tr\u00ec<\/li>\n<li><strong>V\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c<\/strong> xem x\u00e9t c\u1ea3 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn v\u00e0 t\u00ednh th\u1ea9m m\u1ef9<\/li>\n<li><strong>V\u1eadt li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng<\/strong> \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 an to\u00e0n l\u00e2u d\u00e0i<\/li>\n<li><strong>T\u00e0i li\u1ec7u ph\u00f9 h\u1ee3p<\/strong> h\u1ed7 tr\u1ee3 c\u00f4ng vi\u1ec7c \u0111i\u1ec7n trong t\u01b0\u01a1ng lai<\/li>\n<\/ol>\n<h3>Chi\u1ebfn l\u01b0\u1ee3c chu\u1ea9n b\u1ecb cho t\u01b0\u01a1ng lai<\/h3>\n<p><strong>L\u1eadp k\u1ebf ho\u1ea1ch l\u1eafp \u0111\u1eb7t th\u00f4ng minh:<\/strong><\/p>\n<ul>\n<li>L\u1eafp \u0111\u1eb7t th\u00eam h\u1ed9p n\u1ed1i trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng<\/li>\n<li>S\u1eed d\u1ee5ng h\u1ed9p l\u1edbn h\u01a1n \u0111\u1ec3 ch\u1ee9a c\u00e1c m\u1ea1ch trong t\u01b0\u01a1ng lai<\/li>\n<li>L\u00ean k\u1ebf ho\u1ea1ch c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u1ec3 n\u00e2ng c\u1ea5p \u0111i\u1ec7n<\/li>\n<li>Xem x\u00e9t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trong nh\u00e0 th\u00f4ng minh<\/li>\n<li>Duy tr\u00ec b\u1ea3n v\u1ebd \u0111i\u1ec7n chi ti\u1ebft<\/li>\n<\/ul>\n<blockquote>\n<p><strong>\ud83d\udca1 Chuy\u00ean Gia M\u1eb9o:<\/strong> Lu\u00f4n ch\u1ee5p \u1ea3nh h\u1ec7 th\u1ed1ng \u0111i\u1ec7n tr\u01b0\u1edbc khi \u0111\u00f3ng t\u01b0\u1eddng. T\u00e0i li\u1ec7u n\u00e0y r\u1ea5t h\u1eefu \u00edch cho vi\u1ec7c s\u1eeda ch\u1eefa v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 sau n\u00e0y.<\/p>\n<\/blockquote>\n<h2>K\u1ebft lu\u1eadn: \u0110\u1ea3m b\u1ea3o l\u1eafp \u0111\u1eb7t h\u1ed9p n\u1ed1i an to\u00e0n v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh<\/h2>\n<p>H\u1ed9p n\u1ed1i kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c gi\u1ea5u sau t\u01b0\u1eddng th\u1ea1ch cao ho\u1eb7c c\u00e1c v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng c\u1ed1 \u0111\u1ecbnh kh\u00e1c. C\u00e1c y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1ee7a NEC \u0111\u01b0\u1ee3c \u0111\u01b0a ra nh\u1eb1m b\u1ea3o v\u1ec7 t\u00ednh m\u1ea1ng v\u00e0 t\u00e0i s\u1ea3n b\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i \u0111i\u1ec7n lu\u00f4n trong t\u00ecnh tr\u1ea1ng c\u00f3 th\u1ec3 ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec \u0111\u01b0\u1ee3c. Cho d\u00f9 b\u1ea1n \u0111ang x\u1eed l\u00fd c\u00e1c vi ph\u1ea1m hi\u1ec7n c\u00f3 hay \u0111ang l\u00ean k\u1ebf ho\u1ea1ch l\u1eafp \u0111\u1eb7t m\u1edbi, h\u00e3y lu\u00f4n \u01b0u ti\u00ean an to\u00e0n v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c \u0111i\u1ec7n ph\u1ee9c t\u1ea1p ho\u1eb7c c\u00e1c c\u00e2u h\u1ecfi v\u1ec1 vi\u1ec7c tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh, h\u00e3y tham kh\u1ea3o \u00fd ki\u1ebfn th\u1ee3 \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p, ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ee7a b\u1ea1n \u0111\u00e1p \u1ee9ng t\u1ea5t c\u1ea3 c\u00e1c ti\u00eau chu\u1ea9n \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 qu\u1ed1c gia. Vi\u1ec7c ti\u1ebfp c\u1eadn h\u1ed9p n\u1ed1i ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t kho\u1ea3n \u0111\u1ea7u t\u01b0 cho s\u1ef1 an to\u00e0n, gi\u00e1 tr\u1ecb v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n trong nh\u00e0 b\u1ea1n.<\/p>\n<p><strong>H\u00e3y h\u00e0nh \u0111\u1ed9ng:<\/strong> N\u1ebfu b\u1ea1n nghi ng\u1edd c\u00f3 h\u1ed9p n\u1ed1i \u0111i\u1ec7n \u1ea9n trong nh\u00e0, h\u00e3y l\u00ean l\u1ecbch ki\u1ec3m tra \u0111i\u1ec7n chuy\u00ean nghi\u1ec7p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 an to\u00e0n. \u0110\u1eebng th\u1ecfa hi\u1ec7p v\u1edbi v\u1ea5n \u0111\u1ec1 an to\u00e0n \u0111i\u1ec7n - r\u1ee7i ro th\u1ef1c s\u1ef1 qu\u00e1 l\u1edbn.<\/p>\n<h2>Li\u00ean quan<\/h2>\n<p><a href=\"https:\/\/test.viox.com\/vi\/complete-guide-to-circuit-breaker-symbols\/\">H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 k\u00fd hi\u1ec7u c\u1ee7a m\u00e1y c\u1eaft m\u1ea1ch<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/terminal-box-vs-junction-box\/\">H\u1ed9p \u0111\u1ea7u cu\u1ed1i so v\u1edbi H\u1ed9p n\u1ed1i<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/difference-between-a-combiner-box-and-a-junction-box\/\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa h\u1ed9p k\u1ebft h\u1ee3p v\u00e0 h\u1ed9p n\u1ed1i<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/understanding-electrical-junction-box-types\/\">Hi\u1ec3u v\u1ec1 c\u00e1c lo\u1ea1i h\u1ed9p n\u1ed1i \u0111i\u1ec7n<\/a><\/p>\n<\/div>\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Direct Answer: No, junction boxes cannot be completely hidden behind drywall. According to the National Electrical Code (NEC), all junction boxes must remain accessible without removing any part of the building structure or finish materials. This critical safety requirement prevents electrical hazards and ensures proper maintenance access. Understanding junction box accessibility requirements is essential for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":18586,"comment_status":"closed","ping_status":"open","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-18585","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\/18585","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=18585"}],"version-history":[{"count":0,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/18585\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/18586"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=18585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=18585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=18585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}