{"id":20865,"date":"2025-12-15T23:22:40","date_gmt":"2025-12-15T15:22:40","guid":{"rendered":"https:\/\/viox.com\/?p=20865"},"modified":"2025-12-15T23:27:31","modified_gmt":"2025-12-15T15:27:31","slug":"what-is-a-spider-box-portable-power-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/what-is-a-spider-box-portable-power-guide\/","title":{"rendered":"H\u1ed9p Spider l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n di \u0111\u1ed9ng"},"content":{"rendered":"
\n

M\u1ed9t H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m (Spider box)<\/strong> l\u00e0 m\u1ed9t Ph\u00e2n ph\u1ed1i \u0111i\u1ec7n di \u0111\u1ed9ng<\/a> Thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n cao th\u00e0nh nhi\u1ec1u m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng. C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n t\u1ea1m th\u1eddi ho\u1eb7c trung t\u00e2m \u0111i\u1ec7n di \u0111\u1ed9ng, h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1eb7c bi\u1ec7t cho c\u00e1c c\u00f4ng tr\u01b0\u1eddng, s\u1ef1 ki\u1ec7n v\u00e0 l\u1eafp \u0111\u1eb7t t\u1ea1m th\u1eddi, n\u01a1i c\u00e1c \u0111\u1ed9i c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n an to\u00e0n, ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft g\u1ea7n n\u01a1i l\u00e0m vi\u1ec7c.<\/p>\n

Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c b\u1ea3ng \u0111i\u1ec7n c\u1ed1 \u0111\u1ecbnh, h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m k\u1ebft h\u1ee3p v\u1ecf b\u1ecdc ch\u1eafc ch\u1eafn \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng ngo\u00e0i tr\u1eddi v\u1edbi b\u1ea3o v\u1ec7 ng\u1eaft m\u1ea1ch khi c\u00f3 s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t (GFCI) v\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch trong m\u1ed9t g\u00f3i nh\u1ecf g\u1ecdn, di \u0111\u1ed9ng. T\u00ean g\u1ecdi \u201cspider\u201d (nh\u1ec7n) xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u \u201cch\u00e2n\u201d \u1ed5 c\u1eafm k\u00e9o d\u00e0i t\u1eeb ngu\u1ed3n \u0111i\u1ec7n trung t\u00e2m\u2014t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch ch\u00e2n nh\u1ec7n t\u1ecfa ra t\u1eeb th\u00e2n c\u1ee7a n\u00f3. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y th\u01b0\u1eddng ch\u1ea5p nh\u1eadn \u0111\u1ea7u v\u00e0o m\u1ed9t pha 50 ampe, 125\/250 volt th\u00f4ng qua m\u1ed9t \u0111\u1ea7u v\u00e0o kh\u00f3a v\u00e0 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n th\u00f4ng qua nhi\u1ec1u \u1ed5 c\u1eafm \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 GFCI 15 ampe ho\u1eb7c 20 ampe, c\u1ed9ng v\u1edbi c\u00e1c \u1ed5 c\u1eafm kh\u00f3a c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n cao h\u01a1n t\u00f9y ch\u1ecdn cho thi\u1ebft b\u1ecb n\u1eb7ng.<\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 th\u1ea7u, qu\u1ea3n l\u00fd c\u01a1 s\u1edf v\u00e0 c\u00e1c chuy\u00ean gia t\u1ed5 ch\u1ee9c s\u1ef1 ki\u1ec7n, h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m gi\u1ea3i quy\u1ebft m\u1ed9t th\u00e1ch th\u1ee9c quan tr\u1ecdng: cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a C\u01a1 quan Qu\u1ea3n l\u00fd An to\u00e0n v\u00e0 S\u1ee9c kh\u1ecfe Ngh\u1ec1 nghi\u1ec7p (OSHA) v\u00e0 Quy t\u1eafc \u0110i\u1ec7n Qu\u1ed1c gia (NEC) m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 ph\u1ee9c t\u1ea1p v\u00e0 chi ph\u00ed l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ed1 \u0111\u1ecbnh. VIOX Electric s\u1ea3n xu\u1ea5t c\u00e1c h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m c\u1ea5p c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng B2B kh\u1eaft khe, n\u01a1i an to\u00e0n, \u0111\u1ed9 b\u1ec1n v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh l\u00e0 kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n

\"Professional
H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m VIOX Electric c\u00f4ng nghi\u1ec7p chuy\u00ean nghi\u1ec7p \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u00edch c\u1ef1c t\u1ea1i m\u1ed9t c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng, c\u00f3 v\u1ecf b\u1ecdc ch\u1eafc ch\u1eafn v\u00e0 \u1ed5 c\u1eafm \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 GFCI.<\/figcaption><\/figure>\n

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m<\/h2>\n

H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00e1c b\u1ea3ng ph\u00e2n ph\u1ed1i ph\u1ee5 di \u0111\u1ed9ng, gi\u1ea3m \u0111i\u1ec7n \u00e1p t\u1eeb ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh v\u00e0 chia n\u00f3 th\u00e0nh nhi\u1ec1u m\u1ea1ch nh\u00e1nh \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. Quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng tu\u00e2n theo m\u1ed9t l\u1ed9 tr\u00ecnh \u0111\u01a1n gi\u1ea3n t\u1eeb \u0111\u1ea7u v\u00e0o \u0111\u1ebfn \u0111\u1ea7u ra:<\/p>\n

\u0110\u1ea7u v\u00e0o ngu\u1ed3n<\/strong>: M\u1ed9t th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 k\u1ebft n\u1ed1i h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m v\u1edbi m\u00e1y ph\u00e1t \u0111i\u1ec7n, b\u1ea3ng d\u1ecbch v\u1ee5 t\u1ea1m th\u1eddi ho\u1eb7c ngu\u1ed3n \u0111i\u1ec7n c\u1ed1 \u0111\u1ecbnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u1ee5m c\u00e1p v\u00e0 \u0111\u1ea7u n\u1ed1i kh\u00f3a th\u00edch h\u1ee3p. H\u1ea7u h\u1ebft c\u00e1c h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m c\u00f4ng nghi\u1ec7p s\u1eed d\u1ee5ng \u0111\u1ea7u v\u00e0o kh\u00f3a ki\u1ec3u California 50 ampe (CS6365C ho\u1eb7c t\u01b0\u01a1ng t\u1ef1), cung c\u1ea5p c\u00e1c k\u1ebft n\u1ed1i an to\u00e0n, ch\u1ed1ng l\u1ea1i s\u1ef1 ng\u1eaft k\u1ebft n\u1ed1i ng\u1eabu nhi\u00ean. Nhi\u1ec1u thi\u1ebft b\u1ecb c\u0169ng c\u00f3 c\u00e1c \u1ed5 c\u1eafm th\u00f4ng m\u1ea1ch \u1edf ph\u00eda \u0111\u1ea7u v\u00e0o, cho ph\u00e9p c\u00e1c \u0111\u1ed9i k\u1ebft n\u1ed1i chu\u1ed7i nhi\u1ec1u h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n duy nh\u1ea5t\u2014gi\u1ea3m y\u00eau c\u1ea7u v\u1ec1 c\u00e1p v\u00e0 m\u1edf r\u1ed9ng ph\u1ea1m vi ph\u00e2n ph\u1ed1i tr\u00ean c\u00e1c c\u00f4ng tr\u01b0\u1eddng l\u1edbn.<\/p>\n

Ph\u00e2n ph\u1ed1i n\u1ed9i b\u1ed9<\/strong>: B\u00ean trong v\u1ecf b\u1ecdc, ngu\u1ed3n \u0111i\u1ec7n \u0111i v\u00e0o c\u1ea5p cho m\u1ed9t thanh c\u00e1i ch\u00ednh ph\u00e2n nh\u00e1nh \u0111\u1ebfn c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch ri\u00eang l\u1ebb. M\u1ed7i b\u1ed9 ng\u1eaft m\u1ea1ch b\u1ea3o v\u1ec7 m\u1ed9t m\u1ea1ch chuy\u00ean d\u1ee5ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u1edf 15 ho\u1eb7c 20 ampe cho c\u00e1c \u1ed5 c\u1eafm \u0111\u00f4i \u0111a n\u0103ng. C\u00e1c ki\u1ec3u m\u00e1y ti\u00ean ti\u1ebfn k\u1ebft h\u1ee3p c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch t\u1eeb nhi\u1ec7t ph\u1ea3n \u1ee9ng v\u1edbi c\u1ea3 t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i (d\u00f2ng \u0111i\u1ec7n duy tr\u00ec tr\u00ean \u0111\u1ecbnh m\u1ee9c) v\u00e0 ng\u1eafn m\u1ea1ch (d\u00f2ng \u0111i\u1ec7n cao t\u1ee9c th\u1eddi). C\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c g\u1eafn d\u01b0\u1edbi n\u1eafp c\u00f3 b\u1ea3n l\u1ec1, ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft, gi\u1eef cho h\u01a1i \u1ea9m, b\u1ee5i v\u00e0 m\u1ea3nh v\u1ee5n tr\u00e1nh xa c\u00e1c \u0111\u1ea7u n\u1ed1i \u0111ang ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p nh\u00e2n vi\u00ean \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n \u0111\u1eb7t l\u1ea1i c\u00e1c m\u1ea1ch \u0111\u00e3 ng\u1eaft.<\/p>\n

B\u1ea3o v\u1ec7 GFCI<\/strong>: Sau khi \u0111i qua b\u1ed9 ng\u1eaft m\u1ea1ch, ngu\u1ed3n \u0111i\u1ec7n s\u1ebd ch\u1ea3y \u0111\u1ebfn c\u00e1c m\u00f4-\u0111un GFCI theo d\u00f5i s\u1ef1 c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n gi\u1eefa d\u00e2y n\u00f3ng v\u00e0 d\u00e2y trung t\u00ednh. N\u1ebfu GFCI ph\u00e1t hi\u1ec7n ra s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t\u2014th\u01b0\u1eddng l\u00e0 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng 5 miliampe cho bi\u1ebft d\u00f2ng \u0111i\u1ec7n r\u00f2 r\u1ec9 qua ng\u01b0\u1eddi ho\u1eb7c thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng\u2014n\u00f3 s\u1ebd ng\u1eaft trong v\u00f2ng 25 mili gi\u00e2y, c\u1eaft \u0111i\u1ec7n tr\u01b0\u1edbc khi x\u1ea3y ra th\u01b0\u01a1ng t\u00edch nghi\u00eam tr\u1ecdng. C\u00e1c h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 GFCI \u201ch\u1edf d\u00e2y trung t\u00ednh\u201d gi\u00fap gi\u1ea3m c\u00e1c chuy\u1ebfn \u0111i g\u00e2y phi\u1ec1n to\u00e1i do c\u00e1c m\u1ea1ch nh\u00e1nh nhi\u1ec1u d\u00e2y ho\u1eb7c d\u00e2y trung t\u00ednh d\u00f9ng chung, m\u1ed9t s\u1ef1 th\u1ea5t v\u1ecdng ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng.<\/p>\n

\u1ed4 c\u1eafm \u0111\u1ea7u ra<\/strong>: Giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng cung c\u1ea5p \u0111i\u1ec7n cho c\u00e1c \u1ed5 c\u1eafm \u0111\u00f4i NEMA 5-20R ti\u00eau chu\u1ea9n (c\u00e1c \u1ed5 c\u1eafm 120 volt quen thu\u1ed9c) v\u00e0 c\u00e1c \u1ed5 c\u1eafm kh\u00f3a chuy\u00ean d\u1ee5ng cho t\u1ea3i cao h\u01a1n. M\u1ed9t h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m 50 ampe \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 cung c\u1ea5p s\u00e1u \u0111\u1ebfn t\u00e1m \u1ed5 c\u1eafm \u0111\u00f4i 20 ampe c\u1ed9ng v\u1edbi m\u1ed9t \u1ed5 c\u1eafm kh\u00f3a L14-30R 30 ampe cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y h\u00e0n, m\u00e1y n\u00e9n kh\u00ed ho\u1eb7c c\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n l\u1edbn. V\u1ecf ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft b\u1ea3o v\u1ec7 c\u00e1c \u1ed5 c\u1eafm kh\u00f4ng s\u1eed d\u1ee5ng kh\u1ecfi m\u01b0a, tuy\u1ebft v\u00e0 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m t\u1ea1i c\u00f4ng tr\u01b0\u1eddng.<\/p>\n

C\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh<\/h2>\n

Hi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh gi\u00fap ng\u01b0\u1eddi mua ch\u1ec9 \u0111\u1ecbnh \u0111\u00fang h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. \u0110\u00e2y l\u00e0 nh\u1eefng g\u00ec b\u00ean trong m\u1ed9t thi\u1ebft b\u1ecb c\u1ea5p chuy\u00ean nghi\u1ec7p:<\/p>\n

Bao v\u00e2y<\/strong><\/a>: V\u1ecf ngo\u00e0i x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m c\u00f4ng nghi\u1ec7p th\u01b0\u1eddng s\u1eed d\u1ee5ng cao su \u0111\u00fac, nh\u1ef1a nhi\u1ec7t d\u1ebbo gia c\u1ed1 ho\u1eb7c k\u1ebft c\u1ea5u th\u00e9p s\u01a1n t\u0129nh \u0111i\u1ec7n. X\u1ebfp h\u1ea1ng c\u1ee7a Hi\u1ec7p h\u1ed9i c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n qu\u1ed1c gia (NEMA) cho bi\u1ebft m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7\u2014NEMA 3R l\u00e0 ti\u00eau chu\u1ea9n cho s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi, cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ed1ng m\u01b0a, m\u01b0a tuy\u1ebft v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh b\u0103ng trong khi v\u1eabn \u0111\u01b0\u1ee3c th\u00f4ng gi\u00f3 \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 ng\u01b0ng t\u1ee5. C\u00e1c ki\u1ec3u m\u00e1y h\u1ea1ng n\u1eb7ng c\u00f3 th\u1ec3 cung c\u1ea5p x\u1ebfp h\u1ea1ng NEMA 4 ho\u1eb7c 4X cho n\u01b0\u1edbc phun tr\u1ef1c ti\u1ebfp ho\u1eb7c m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n. T\u00ecm c\u00e1c ch\u00e2n \u0111\u1ebf n\u00e2ng cao gi\u1eef cho v\u1ecf b\u1ecdc cao h\u01a1n m\u1eb7t \u0111\u1ea5t v\u00e0i inch, ng\u0103n n\u01b0\u1edbc x\u00e2m nh\u1eadp t\u1eeb v\u0169ng n\u01b0\u1edbc v\u00e0 c\u1ea3i thi\u1ec7n lu\u1ed3ng kh\u00f4ng kh\u00ed l\u00e0m m\u00e1t.<\/p>\n

K\u1ebft n\u1ed1i \u0111\u1ea7u v\u00e0o<\/strong>: \u0110\u1ea7u v\u00e0o ngu\u1ed3n ch\u1ea5p nh\u1eadn ngu\u1ed3n c\u1ea5p \u0111\u1ebfn. C\u00e1c \u0111\u1ea7u n\u1ed1i kh\u00f3a\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 ki\u1ec3u California (CS6365C), Hubbell (HBL460C9W) ho\u1eb7c ki\u1ec3u \u1ed1ng l\u00f3t v\u00e0 ch\u00e2n IEC 60309\u2014cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u1eef c\u01a1 h\u1ecdc v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c ph\u00edch c\u1eafm ti\u00eau chu\u1ea9n. \u0110i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c \u0111\u1ea7u v\u00e0o ph\u1ea3i kh\u1edbp ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 ngu\u1ed3n \u0111i\u1ec7n ng\u01b0\u1ee3c d\u00f2ng; c\u00e1c c\u1ea5u h\u00ecnh ph\u1ed5 bi\u1ebfn bao g\u1ed3m 50A \u1edf 125\/250V m\u1ed9t pha ho\u1eb7c 60A \u1edf 250V. Kh\u1ea3 n\u0103ng th\u00f4ng m\u1ea1ch (\u0111\u1ea7u v\u00e0o ho\u1eb7c \u0111\u1ea7u n\u1ed1i \u0111\u1ea7u ra th\u1ee9 hai \u1edf ph\u00eda \u0111\u1ea7u v\u00e0o) cho ph\u00e9p k\u1ebft n\u1ed1i chu\u1ed7i m\u00e0 kh\u00f4ng c\u1ea7n n\u1ed1i ho\u1eb7c b\u1ed9 \u0111i\u1ec1u h\u1ee3p ch\u1eef Y.<\/p>\n

M\u00e1y c\u1eaft m\u1ea1ch<\/strong><\/a>: Ch\u00fang b\u1ea3o v\u1ec7 c\u00e1c m\u1ea1ch nh\u00e1nh kh\u1ecfi qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch. B\u1ed9 ng\u1eaft m\u1ea1ch t\u1eeb nhi\u1ec7t k\u1ebft h\u1ee3p m\u1ed9t d\u1ea3i l\u01b0\u1ee1ng kim (ph\u1ea3n \u1ee9ng v\u1edbi qu\u00e1 t\u1ea3i k\u00e9o d\u00e0i b\u1eb1ng c\u00e1ch l\u00e0m n\u00f3ng v\u00e0 u\u1ed1n cong) v\u1edbi m\u1ed9t cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb (ph\u1ea3n \u1ee9ng ngay l\u1eadp t\u1ee9c v\u1edbi d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch). \u0110\u1ecbnh m\u1ee9c c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch th\u01b0\u1eddng kh\u1edbp v\u1edbi c\u00e1c m\u1ea1ch \u1ed5 c\u1eafm: 15A ho\u1eb7c 20A cho \u1ed5 c\u1eafm \u0111\u00f4i, 30A cho \u1ed5 c\u1eafm kh\u00f3a. Danh s\u00e1ch UL 489 (M\u00e1y c\u1eaft m\u1ea1ch v\u1ecf \u0111\u00fac<\/a>) ho\u1eb7c UL 1077 (B\u1ed9 b\u1ea3o v\u1ec7 b\u1ed5 sung) x\u00e1c nh\u1eadn th\u1eed nghi\u1ec7m an to\u00e0n. H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m ch\u1ea5t l\u01b0\u1ee3ng s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch kh\u00f4ng t\u1ef1 do c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1eef k\u00edn khi c\u00f3 t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i.<\/p>\n

M\u00f4-\u0111un GFCI<\/strong>: B\u1ea3o v\u1ec7 ch\u1ed1ng ch\u1ea1m \u0111\u1ea5t l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1ea1m th\u1eddi. C\u00e1c thi\u1ebft b\u1ecb GFCI li\u00ean t\u1ee5c so s\u00e1nh d\u00f2ng \u0111i\u1ec7n trong d\u00e2y n\u00f3ng v\u00e0 d\u00e2y trung t\u00ednh; b\u1ea5t k\u1ef3 s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0o tr\u00ean ng\u01b0\u1ee1ng ng\u1eaft (th\u01b0\u1eddng l\u00e0 5 mA \u00b1 1 mA) cho bi\u1ebft r\u00f2 r\u1ec9 xu\u1ed1ng \u0111\u1ea5t v\u00e0 k\u00edch ho\u1ea1t ng\u1eaft k\u1ebft n\u1ed1i ngay l\u1eadp t\u1ee9c. GFCI lo\u1ea1i A (ng\u1eaft 5 mA) b\u1ea3o v\u1ec7 nh\u00e2n vi\u00ean, trong khi c\u00e1c thi\u1ebft b\u1ecb Lo\u1ea1i B c\u0169 h\u01a1n (ng\u1eaft 20 mA) \u0111\u00e3 l\u1ed7i th\u1eddi \u0111\u1ed1i v\u1edbi c\u00e1c c\u00e0i \u0111\u1eb7t m\u1edbi. Ph\u00e1t hi\u1ec7n h\u1edf d\u00e2y trung t\u00ednh ng\u0103n GFCI ho\u1ea1t \u0111\u1ed9ng khi m\u1ea5t d\u00e2y trung t\u00ednh, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u1ed1i \u0111\u1ea5t n\u1ed5i nguy hi\u1ec3m. T\u00ecm GFCI t\u1ef1 ki\u1ec3m tra (b\u1eaft bu\u1ed9c \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c ph\u00e1p l\u00fd) t\u1ef1 \u0111\u1ed9ng x\u00e1c minh ch\u1ee9c n\u0103ng.<\/p>\n

\u1ed4 c\u1eafm \u0111\u1ea7u ra<\/strong>: \u1ed4 c\u1eafm cung c\u1ea5p \u0111i\u1ec7n cho c\u00e1c t\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. C\u00e1c c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n bao g\u1ed3m \u1ed5 c\u1eafm \u0111\u00f4i NEMA 5-20R (20A, 125V, ph\u1ed5 bi\u1ebfn cho d\u1ee5ng c\u1ee5 c\u1ea7m tay v\u00e0 chi\u1ebfu s\u00e1ng) v\u00e0 \u1ed5 c\u1eafm kh\u00f3a xo\u1eafn nh\u01b0 L14-30R (30A, 125\/250V, cho thi\u1ebft b\u1ecb y\u00eau c\u1ea7u d\u00f2ng \u0111i\u1ec7n 240V ho\u1eb7c d\u00f2ng \u0111i\u1ec7n 120V cao). \u1ed4 c\u1eafm ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft (WR) c\u00f3 n\u1eafp l\u00f2 xo \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC \u0111\u1ed1i v\u1edbi c\u00e1c v\u1ecb tr\u00ed \u1ea9m \u01b0\u1edbt. V\u1ecf \u0111ang s\u1eed d\u1ee5ng cho ph\u00e9p d\u00e2y v\u1eabn \u0111\u01b0\u1ee3c c\u1eafm trong khi v\u1eabn duy tr\u00ec kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 th\u1eddi ti\u1ebft\u2014\u0111i\u1ec1u c\u1ea7n thi\u1ebft cho ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c trong m\u01b0a ho\u1eb7c tuy\u1ebft.<\/p>\n

H\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n v\u00e0 n\u1ed1i \u0111\u1ea5t<\/strong>: D\u00e2y d\u1eabn b\u00ean trong ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u00e1ch \u0111i\u1ec7n c\u1ee7a NEC. D\u00e2y \u0111\u1ed3ng c\u00f3 k\u00edch th\u01b0\u1edbc theo B\u1ea3ng 310.16 c\u1ee7a NEC \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng mang d\u00f2ng \u0111i\u1ec7n an to\u00e0n; h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m \u0111i\u1ec3n h\u00ecnh s\u1eed d\u1ee5ng 6 AWG cho \u0111\u1ea7u v\u00e0o 50A v\u00e0 12 AWG cho m\u1ea1ch nh\u00e1nh 20A. T\u00ednh li\u00ean t\u1ee5c c\u1ee7a \u0111\u1ea5t l\u00e0 r\u1ea5t quan tr\u1ecdng\u2014x\u00e1c minh r\u1eb1ng v\u1ecf b\u1ecdc, t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 c\u1eafm v\u00e0 \u0111\u1ea7u n\u1ed1i \u0111\u1ea7u v\u00e0o li\u00ean k\u1ebft v\u1edbi m\u1ed9t thanh n\u1ed1i \u0111\u1ea5t chung \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi d\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb trong c\u00e1p ngu\u1ed3n.<\/p>\n

\"Technical
H\u00ecnh c\u1eaft k\u1ef9 thu\u1eadt c\u1ee7a h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m VIOX minh h\u1ecda ki\u1ebfn tr\u00fac b\u00ean trong, bao g\u1ed3m \u0111\u1ea7u v\u00e0o 50A, b\u1ed9 ng\u1eaft m\u1ea1ch, m\u00f4-\u0111un GFCI v\u00e0 thanh n\u1ed1i \u0111\u1ea5t.<\/figcaption><\/figure>\n

C\u00e1c lo\u1ea1i v\u00e0 c\u1ea5u h\u00ecnh<\/h2>\n

H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m c\u00f3 nhi\u1ec1u k\u00edch c\u1ee1 v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed \u1ed5 c\u1eafm kh\u00e1c nhau \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau:<\/p>\n

Theo \u0111\u1ecbnh m\u1ee9c \u0111\u1ea7u v\u00e0o<\/strong>: C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o x\u00e1c \u0111\u1ecbnh t\u1ed5ng c\u00f4ng su\u1ea5t kh\u1ea3 d\u1ee5ng. H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m 30 ampe c\u1ea5p \u0111\u1ea7u v\u00e0o ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u0111\u1ed9i nh\u1ecf ho\u1eb7c c\u00e1c t\u00e1c v\u1ee5 nh\u1eb9\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn vi\u1ec7c s\u1eeda sang nh\u00e0 \u1edf ho\u1eb7c c\u00e1c cu\u1ed9c g\u1ecdi d\u1ecbch v\u1ee5. C\u00e1c ki\u1ec3u m\u00e1y 50 ampe ti\u00eau chu\u1ea9n x\u1eed l\u00fd c\u00f4ng vi\u1ec7c x\u00e2y d\u1ef1ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec3n h\u00ecnh v\u1edbi nhi\u1ec1u ng\u00e0nh ngh\u1ec1 l\u00e0m vi\u1ec7c \u0111\u1ed3ng th\u1eddi. C\u00e1c thi\u1ebft b\u1ecb 60 ampe ho\u1eb7c 100 ampe h\u1ea1ng n\u1eb7ng h\u1ed7 tr\u1ee3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p, c\u00e1c s\u1ef1 ki\u1ec7n l\u1edbn ho\u1eb7c l\u1eafp \u0111\u1eb7t t\u1ea1m th\u1eddi c\u00f3 nhu c\u1ea7u cao. \u0110i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t pha 125\/250V (ph\u1ed5 bi\u1ebfn nh\u1ea5t), ba pha 208V ho\u1eb7c ba pha 480V cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p chuy\u00ean d\u1ee5ng.<\/p>\n

Theo c\u1ea5u h\u00ecnh \u1ed5 c\u1eafm<\/strong>: S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c \u1ed5 c\u1eafm x\u00e1c \u0111\u1ecbnh t\u00ednh linh ho\u1ea1t. C\u00e1c ki\u1ec3u m\u00e1y c\u01a1 b\u1ea3n cung c\u1ea5p t\u1eeb b\u1ed1n \u0111\u1ebfn s\u00e1u \u1ed5 c\u1eafm GFCI \u0111\u00f4i 20 ampe\u2014\u0111\u1ee7 cho d\u1ee5ng c\u1ee5 c\u1ea7m tay, chi\u1ebfu s\u00e1ng v\u00e0 thi\u1ebft b\u1ecb nh\u1ecf. C\u00e1c c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n b\u1ed5 sung m\u1ed9t kh\u00f3a xo\u1eafn 30 ampe (L14-30R) cho c\u00e1c t\u1ea3i cao h\u01a1n nh\u01b0 m\u00e1y h\u00e0n ho\u1eb7c m\u00e1y n\u00e9n kh\u00ed. C\u00e1c ki\u1ec3u m\u00e1y cao c\u1ea5p bao g\u1ed3m nhi\u1ec1u \u1ed5 c\u1eafm kh\u00f3a \u1edf c\u00e1c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau (120V, 208V, 240V) \u0111\u1ec3 c\u1ea5p ngu\u1ed3n cho c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n b\u1ed9 \u0111i\u1ec1u h\u1ee3p. M\u1ed9t s\u1ed1 h\u1ed9p chia \u0111i\u1ec7n t\u1ea1m t\u00edch h\u1ee3p v\u00f4n k\u1ebf ho\u1eb7c \u0111\u1ed3ng h\u1ed3 \u0111o gi\u1edd t\u00edch h\u1ee3p \u0111\u1ec3 theo d\u00f5i v\u00e0 thanh to\u00e1n.<\/p>\n

Theo m\u00f4i tr\u01b0\u1eddng<\/strong>: H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m c\u1ea5p x\u00e2y d\u1ef1ng s\u1eed d\u1ee5ng v\u1ecf b\u1ecdc NEMA 3R\u2014\u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng ngo\u00e0i tr\u1eddi nh\u01b0ng kh\u00f4ng th\u1ec3 ng\u00e2m trong n\u01b0\u1edbc. C\u00e1c ki\u1ec3u m\u00e1y h\u00e0ng h\u1ea3i ho\u1eb7c ngo\u00e0i kh\u01a1i c\u00f3 k\u1ebft c\u1ea5u th\u00e9p kh\u00f4ng g\u1ec9 NEMA 4X v\u1edbi c\u00e1c v\u00f2ng \u0111\u1ec7m \u0111\u1ec3 ch\u1ed1ng l\u1ea1i h\u01a1i mu\u1ed1i v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n. H\u1ed9p chia \u0111i\u1ec7n t\u1ea1m v\u1ecb tr\u00ed nguy hi\u1ec3m \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng cho Khu v\u1ef1c 2 Lo\u1ea1i I ho\u1eb7c khu v\u1ef1c ATEX k\u1ebft h\u1ee3p v\u1ecf ch\u1ed1ng ch\u00e1y n\u1ed5 v\u00e0 ni\u00eam phong \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u0111\u1ecba \u0111i\u1ec3m h\u00f3a d\u1ea7u ho\u1eb7c khai th\u00e1c m\u1ecf. C\u00e1c thi\u1ebft b\u1ecb c\u1ea5p gi\u1ea3i tr\u00ed b\u1ed5 sung c\u00e1c t\u00ednh n\u0103ng th\u1ea9m m\u1ef9 nh\u01b0 thi\u1ebft k\u1ebf c\u1ea5u h\u00ecnh th\u1ea5p ho\u1eb7c n\u1eafp \u0111\u00f3ng \u00eam cho s\u1eed d\u1ee5ng sau c\u00e1nh g\u00e0.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Lo\u1ea1i c\u1ea5u h\u00ecnh<\/th>\n\u0110\u1ecbnh m\u1ee9c \u0111\u1ea7u v\u00e0o<\/th>\n\u1ed4 c\u1eafm \u0111i\u1ec3n h\u00ecnh<\/th>\nX\u1ebfp H\u1ea1ng NEMA<\/th>\n\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
T\u1ea3i nh\u1eb9<\/td>\n30A, 125\/250V<\/td>\n4\u00d7 \u1ed4 c\u1eafm GFCI \u0111\u00f4i 20A<\/td>\n3R<\/td>\nS\u1eeda sang nh\u00e0 \u1edf, cu\u1ed9c g\u1ecdi d\u1ecbch v\u1ee5, \u0111\u1ed9i nh\u1ecf<\/td>\n<\/tr>\n
X\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n<\/td>\n50A, 125\/250V<\/td>\n6\u00d7 \u1ed4 c\u1eafm GFCI \u0111\u00f4i 20A
\n1\u00d7 30A L14-30R<\/td>\n		3R<\/td>\nX\u00e2y d\u1ef1ng th\u01b0\u01a1ng m\u1ea1i, c\u00f4ng tr\u01b0\u1eddng nhi\u1ec1u ng\u00e0nh ngh\u1ec1<\/td>\n<\/tr>\n
C\u00f4ng nghi\u1ec7p h\u1ea1ng n\u1eb7ng<\/td>\n60-100A, 125\/250V ho\u1eb7c 208V<\/td>\n8\u00d7 \u1ed4 c\u1eafm GFCI \u0111\u00f4i 20A
\n2\u00d7 Kh\u00f3a xo\u1eafn 30A
\n1\u00d7 \u1ed4 c\u1eafm 50A<\/td>\n		3R ho\u1eb7c 4<\/td>\nB\u1ea3o tr\u00ec c\u00f4ng nghi\u1ec7p, c\u00e1c s\u1ef1 ki\u1ec7n l\u1edbn, c\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f3 nhu c\u1ea7u cao<\/td>\n<\/tr>\n
H\u00e0ng h\u1ea3i\/Ngo\u00e0i kh\u01a1i<\/td>\n50A, 125\/250V<\/td>\n6\u00d7 \u1ed4 c\u1eafm GFCI \u0111\u00f4i 20A
\n1\u00d7 Kh\u00f3a xo\u1eafn 30A<\/td>\n		4X (kh\u00f4ng g\u1ec9)<\/td>\nC\u00e1c n\u1ec1n t\u1ea3ng ngo\u00e0i kh\u01a1i, x\u01b0\u1edfng \u0111\u00f3ng t\u00e0u, c\u00e1c c\u00f4ng tr\u00ecnh ven bi\u1ec3n<\/td>\n<\/tr>\n
V\u1ecb tr\u00ed nguy hi\u1ec3m<\/td>\n30-50A<\/td>\n4-6\u00d7 GFCI 20A<\/td>\nLo\u1ea1i I Div 2<\/td>\nH\u00f3a d\u1ea7u, khai th\u00e1c m\u1ecf, nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u<\/td>\n<\/tr>\n
Gi\u1ea3i tr\u00ed\/S\u1ef1 ki\u1ec7n<\/td>\n50A, 125\/250V<\/td>\n6-8\u00d7 \u1ed4 c\u1eafm GFCI \u0111\u00f4i 20A
\n1-2\u00d7 30A kh\u00f3a xo\u1eafn<\/td>\n		3R<\/td>\n\u0110\u1ecba \u0111i\u1ec3m h\u00f2a nh\u1ea1c, s\u1ea3n xu\u1ea5t phim, l\u1ec5 h\u1ed9i ngo\u00e0i tr\u1eddi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ti\u00eau chu\u1ea9n & Tu\u00e2n th\u1ee7 An to\u00e0n<\/h2>\n

Tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh kh\u00f4ng ph\u1ea3i l\u00e0 t\u00f9y ch\u1ecdn \u0111\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi\u2014\u0111\u00f3 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u ph\u00e1p l\u00fd b\u1ea3o v\u1ec7 ng\u01b0\u1eddi lao \u0111\u1ed9ng v\u00e0 h\u1ea1n ch\u1ebf tr\u00e1ch nhi\u1ec7m ph\u00e1p l\u00fd. H\u1ed9p chia \u0111i\u1ec7n (Spider box) ph\u1ea3i \u0111\u00e1p \u1ee9ng nhi\u1ec1u ti\u00eau chu\u1ea9n ch\u1ed3ng ch\u00e9o:<\/p>\n

OSHA 1926.404 (C\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng)<\/strong>: C\u01a1 quan Qu\u1ea3n l\u00fd An to\u00e0n v\u00e0 S\u1ee9c kh\u1ecfe Ngh\u1ec1 nghi\u1ec7p quy \u0111\u1ecbnh b\u1ea3o v\u1ec7 ch\u1ed1ng ch\u1ea1m \u0111\u1ea5t cho t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 c\u1eafm 120 volt, m\u1ed9t pha, 15 v\u00e0 20 ampe \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i c\u00e1c c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng kh\u00f4ng thu\u1ed9c h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ed1 \u0111\u1ecbnh c\u1ee7a t\u00f2a nh\u00e0. H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 th\u1ea7u ch\u1ecdn h\u1ed9p chia \u0111i\u1ec7n \u0111\u01b0\u1ee3c trang b\u1ecb GFCI v\u00ec ch\u00fang lo\u1ea1i b\u1ecf g\u00e1nh n\u1eb7ng h\u00e0nh ch\u00ednh c\u1ee7a vi\u1ec7c duy tr\u00ec ch\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp \u0111\u1ea5t \u0111\u1ea3m b\u1ea3o.<\/p>\n

NEC \u0110i\u1ec1u 590 (L\u1eafp \u0111\u1eb7t T\u1ea1m th\u1eddi)<\/strong>: B\u1ed9 lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia chi ph\u1ed1i h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n t\u1ea1m th\u1eddi cho x\u00e2y d\u1ef1ng, s\u1eeda ch\u1eefa, b\u1ea3o tr\u00ec, ph\u00e1 d\u1ee1 v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1. M\u1ee5c 590.6 y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 ch\u1ed1ng ch\u1ea1m \u0111\u1ea5t cho ng\u01b0\u1eddi \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 c\u1eafm 125 volt, m\u1ed9t pha, 15, 20 v\u00e0 30 ampe kh\u00f4ng thu\u1ed9c h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ed1 \u0111\u1ecbnh\u2014v\u1ec1 c\u01a1 b\u1ea3n ph\u1ea3n \u00e1nh c\u00e1c y\u00eau c\u1ea7u c\u1ee7a OSHA nh\u01b0ng m\u1edf r\u1ed9ng ph\u1ea1m vi b\u1ea3o hi\u1ec3m cho c\u00e1c m\u1ea1ch 30 ampe. H\u1ed9p chia \u0111i\u1ec7n c\u0169ng ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC v\u1ec1 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng (\u0110i\u1ec1u 240), x\u1ebfp h\u1ea1ng v\u1ecf b\u1ecdc cho m\u00f4i tr\u01b0\u1eddng (\u0110i\u1ec1u 110.28) v\u00e0 ti\u1ebfp \u0111\u1ea5t\/li\u00ean k\u1ebft (\u0110i\u1ec1u 250).<\/p>\n

Danh s\u00e1ch UL<\/strong>: Th\u1eed nghi\u1ec7m c\u1ee7a Underwriters Laboratories (UL) x\u00e1c minh t\u00ednh an to\u00e0n c\u1ee7a s\u1ea3n ph\u1ea9m. T\u00ecm ki\u1ebfm c\u00e1c h\u1ed9p chia \u0111i\u1ec7n \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea theo UL 1640 (Thi\u1ebft b\u1ecb Ph\u00e2n ph\u1ed1i \u0110i\u1ec7n Di \u0111\u1ed9ng). D\u1ea5u cULus cho bi\u1ebft tu\u00e2n th\u1ee7 c\u1ea3 ti\u00eau chu\u1ea9n c\u1ee7a Hoa K\u1ef3 v\u00e0 Canada.<\/p>\n

C\u1ea2M<\/a> Ti\u00eau chu\u1ea9n V\u1ecf b\u1ecdc<\/strong>: NEMA 250 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ee9c b\u1ea3o v\u1ec7 v\u1ecf b\u1ecdc. NEMA 3R l\u00e0 m\u1ee9c t\u1ed1i thi\u1ec3u cho ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi ngo\u00e0i tr\u1eddi\u2014n\u00f3 b\u1ea3o v\u1ec7 ch\u1ed1ng m\u01b0a, m\u01b0a tuy\u1ebft v\u00e0 b\u0103ng gi\u00e1 nh\u01b0ng bao g\u1ed3m c\u00e1c l\u1ed7 th\u00f4ng gi\u00f3 cho ph\u00e9p lu\u1ed3ng kh\u00f4ng kh\u00ed. NEMA 4 b\u1ed5 sung kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i n\u01b0\u1edbc phun tr\u1ef1c ti\u1ebfp v\u00e0 b\u1eafn tung t\u00f3e, l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng r\u1eeda tr\u00f4i ho\u1eb7c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t. NEMA 4X thay th\u1ebf v\u1eadt li\u1ec7u ch\u1ed1ng \u0103n m\u00f2n (th\u00e9p kh\u00f4ng g\u1ec9, s\u1ee3i th\u1ee7y tinh) cho m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n ho\u1eb7c h\u00f3a ch\u1ea5t. H\u1ed9p chia \u0111i\u1ec7n ch\u1ec9 s\u1eed d\u1ee5ng trong nh\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng NEMA 1, nh\u01b0ng nh\u1eefng lo\u1ea1i n\u00e0y r\u1ea5t hi\u1ebfm trong c\u00e1c \u1ee9ng d\u1ee5ng B2B, n\u01a1i thi\u1ebft b\u1ecb th\u01b0\u1eddng xuy\u00ean di chuy\u1ec3n gi\u1eefa c\u00e1c \u0111\u1ecba \u0111i\u1ec3m trong nh\u00e0 v\u00e0 ngo\u00e0i tr\u1eddi.<\/p>\n

Ti\u00eau chu\u1ea9n Canada (CEC)<\/strong>: B\u1ed9 lu\u1eadt \u0110i\u1ec7n Canada bao g\u1ed3m c\u00e1c y\u00eau c\u1ea7u GFCI t\u01b0\u01a1ng t\u1ef1 theo M\u1ee5c 26-700 (H\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n t\u1ea1m th\u1eddi). C\u00e1c s\u1ea3n ph\u1ea9m d\u00e0nh cho th\u1ecb tr\u01b0\u1eddng Canada ph\u1ea3i c\u00f3 ch\u1ee9ng nh\u1eadn cUL.<\/p>\n

Ki\u1ec3m tra v\u00e0 Th\u1eed nghi\u1ec7m<\/strong>: H\u1ed9p chia \u0111i\u1ec7n \u0111\u01b0\u1ee3c trang b\u1ecb GFCI ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra h\u00e0ng th\u00e1ng b\u1eb1ng n\u00fat ki\u1ec3m tra t\u00edch h\u1ee3p\u2014nh\u1ea5n TEST \u0111\u1ec3 ng\u1eaft thi\u1ebft b\u1ecb, sau \u0111\u00f3 nh\u1ea5n RESET \u0111\u1ec3 kh\u00f4i ph\u1ee5c ngu\u1ed3n \u0111i\u1ec7n. B\u1ea5t k\u1ef3 GFCI n\u00e0o b\u1ecb l\u1ed7i \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c thay th\u1ebf ngay l\u1eadp t\u1ee9c. Ghi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ec3 tu\u00e2n th\u1ee7 OSHA v\u00e0 b\u1ea3o v\u1ec7 tr\u00e1ch nhi\u1ec7m ph\u00e1p l\u00fd.<\/p>\n

\u1ee8ng d\u1ee5ng & Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h2>\n

C\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng<\/strong>: H\u1ed9p chia \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i \u1edf nh\u1eefng n\u01a1i m\u00e0 c\u00e1c \u0111\u1ed9i c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n di \u0111\u1ed9ng di chuy\u1ec3n c\u00f9ng v\u1edbi c\u00f4ng vi\u1ec7c. K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb v\u1edbi m\u00e1y ph\u00e1t \u0111i\u1ec7n trung t\u00e2m ho\u1eb7c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n d\u1ecbch v\u1ee5 t\u1ea1m th\u1eddi, sau \u0111\u00f3 \u0111\u1eb7t ch\u00fang trong m\u1ed7i khu v\u1ef1c l\u00e0m vi\u1ec7c\u2014khu v\u1ef1c \u0111\u00f3ng khung, ph\u00f2ng c\u01a1 kh\u00ed, kh\u00f4ng gian ho\u00e0n thi\u1ec7n. Kh\u1ea3 n\u0103ng truy\u1ec1n qua cho ph\u00e9p b\u1ea1n k\u1ebft n\u1ed1i chu\u1ed7i h\u1ed9p d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n, gi\u1ea3m thi\u1ec3u chi ph\u00ed c\u00e1p v\u00e0 s\u1ee5t \u00e1p. B\u1ea3o v\u1ec7 GFCI \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a OSHA m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng, v\u01b0\u1ee3t qua c\u00e1c cu\u1ed9c ki\u1ec3m tra m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam th\u1ee7 t\u1ee5c gi\u1ea5y t\u1edd.<\/p>\n

B\u1ea3o tr\u00ec v\u00e0 Ng\u1eebng ho\u1ea1t \u0111\u1ed9ng C\u00f4ng nghi\u1ec7p<\/strong>: Trong qu\u00e1 tr\u00ecnh b\u1ea3o tr\u00ec nh\u00e0 m\u00e1y ho\u1eb7c \u0111\u1ea1i tu thi\u1ebft b\u1ecb, h\u1ed9p chia \u0111i\u1ec7n cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi cho thi\u1ebft b\u1ecb h\u00e0n, m\u00e0i v\u00e0 ch\u1ea9n \u0111o\u00e1n m\u00e0 kh\u00f4ng c\u1ea7n khai th\u00e1c v\u00e0o c\u00e1c m\u1ea1ch s\u1ea3n xu\u1ea5t. C\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng tri\u1ec3n khai trong v\u00e0i gi\u1edd thay v\u00ec v\u00e0i ng\u00e0y c\u1ea7n thi\u1ebft cho vi\u1ec7c l\u1eafp \u0111\u1eb7t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n t\u1ea1m th\u1eddi. \u1ed4 c\u1eafm kh\u00f3a ng\u0103n ng\u1eeba ng\u1eaft k\u1ebft n\u1ed1i ng\u1eabu nhi\u00ean c\u00e1c t\u1ea3i quan tr\u1ecdng.<\/p>\n

S\u1ef1 ki\u1ec7n v\u00e0 Gi\u1ea3i tr\u00ed<\/strong>: \u0110\u1ecba \u0111i\u1ec3m h\u00f2a nh\u1ea1c, l\u1ec5 h\u1ed9i v\u00e0 s\u1ef1 ki\u1ec7n ngo\u00e0i tr\u1eddi s\u1eed d\u1ee5ng h\u1ed9p chia \u0111i\u1ec7n \u0111\u1ec3 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n t\u1eeb m\u00e1y ph\u00e1t \u0111i\u1ec7n \u0111\u1ebfn h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng, \u00e2m thanh, nh\u01b0\u1ee3ng b\u1ed9 v\u00e0 gian h\u00e0ng c\u1ee7a nh\u00e0 cung c\u1ea5p. C\u1ea5u tr\u00fac ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft x\u1eed l\u00fd m\u01b0a v\u00e0 b\u00f9n. \u0110\u1ed3ng h\u1ed3 \u0111o gi\u1edd (tr\u00ean m\u1ed9t s\u1ed1 ki\u1ec3u m\u00e1y) cho ph\u00e9p thanh to\u00e1n ch\u00ednh x\u00e1c khi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thu\u00ea. B\u1ed1 c\u1ee5c truy\u1ec1n qua l\u00e0m gi\u1ea3m s\u1ef1 l\u1ed9n x\u1ed9n c\u1ee7a c\u00e1p v\u00e0 c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ea5p ng\u00e3 \u1edf nh\u1eefng khu v\u1ef1c c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cao.<\/p>\n

\u1ee8ng ph\u00f3 Kh\u1ea9n c\u1ea5p v\u00e0 Kh\u1eafc ph\u1ee5c Th\u1ea3m h\u1ecda<\/strong>: Sau b\u00e3o, l\u0169 l\u1ee5t ho\u1eb7c c\u00e1c gi\u00e1n \u0111o\u1ea1n kh\u00e1c, h\u1ed9p chia \u0111i\u1ec7n k\u1ebft h\u1ee3p v\u1edbi m\u00e1y ph\u00e1t \u0111i\u1ec7n di \u0111\u1ed9ng \u0111\u1ec3 kh\u00f4i ph\u1ee5c ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi cho h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng, d\u1ee5ng c\u1ee5, m\u00e1y b\u01a1m v\u00e0 thi\u1ebft b\u1ecb li\u00ean l\u1ea1c. C\u1ea5u tr\u00fac ch\u1eafc ch\u1eafn t\u1ed3n t\u1ea1i trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n b\u1eb1ng xe t\u1ea3i v\u00e0 xe k\u00e9o. V\u1ecf b\u1ecdc NEMA 3R ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng ch\u1ee9a \u0111\u1ea7y m\u1ea3nh v\u1ee5n, n\u01a1i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng trong nh\u00e0 s\u1ebd b\u1ecb h\u1ecfng.<\/p>\n

Ho\u1ea1t \u0111\u1ed9ng N\u00f4ng nghi\u1ec7p<\/strong>: C\u00e1c trang tr\u1ea1i v\u00e0 c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn s\u1eed d\u1ee5ng h\u1ed9p chia \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh thu ho\u1ea1ch, b\u1ea3o tr\u00ec v\u00e0 c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng. C\u00e1c thi\u1ebft b\u1ecb cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho m\u00e1y b\u01a1m t\u01b0\u1edbi ti\u00eau, thi\u1ebft b\u1ecb x\u1eed l\u00fd ng\u0169 c\u1ed1c v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh t\u1ea1m th\u1eddi. C\u00e1c ki\u1ec3u m\u00e1y ch\u1ed1ng \u0103n m\u00f2n ch\u1ecbu \u0111\u01b0\u1ee3c ph\u00e2n b\u00f3n, thu\u1ed1c tr\u1eeb s\u00e2u v\u00e0 quy tr\u00ecnh r\u1eeda tr\u00f4i.<\/p>\n

\"Annotated
S\u01a1 \u0111\u1ed3 b\u1ed1 tr\u00ed \u0111\u1ecba \u0111i\u1ec3m cho th\u1ea5y vi\u1ec7c tri\u1ec3n khai h\u1ed9p chia \u0111i\u1ec7n VIOX, minh h\u1ecda c\u00e1c k\u1ebft n\u1ed1i m\u00e1y ph\u00e1t \u0111i\u1ec7n, chi\u1ebfn l\u01b0\u1ee3c k\u1ebft n\u1ed1i chu\u1ed7i v\u00e0 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u1ebfn c\u00e1c khu v\u1ef1c l\u00e0m vi\u1ec7c kh\u00e1c nhau.<\/figcaption><\/figure>\n

C\u00e1ch Ch\u1ecdn H\u1ed9p Chia \u0110i\u1ec7n Ph\u00f9 H\u1ee3p<\/h2>\n

Ch\u1ecdn h\u1ed9p chia \u0111i\u1ec7n b\u1eb1ng c\u00e1ch l\u00e0m ng\u01b0\u1ee3c l\u1ea1i t\u1eeb t\u1ea3i c\u1ee7a b\u1ea1n. T\u00ednh t\u1ed5ng t\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i (c\u1ed9ng c\u00f4ng su\u1ea5t danh \u0111\u1ecbnh), \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 an to\u00e0n 125% theo NEC v\u00e0 ch\u1ecdn \u0111\u1ecbnh m\u1ee9c \u0111\u1ea7u v\u00e0o cung c\u1ea5p kho\u1ea3ng kh\u00f4ng. Gh\u00e9p c\u00e1c lo\u1ea1i \u1ed5 c\u1eafm v\u1edbi thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n\u2014NEMA 5-20R ti\u00eau chu\u1ea9n cho d\u1ee5ng c\u1ee5 c\u1ea7m tay v\u00e0 h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng, kh\u00f3a xo\u1eafn cho thi\u1ebft b\u1ecb y\u00eau c\u1ea7u k\u1ebft n\u1ed1i an to\u00e0n. X\u00e1c minh x\u1ebfp h\u1ea1ng v\u1ecf b\u1ecdc NEMA ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n: 3R cho s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi th\u00f4ng th\u01b0\u1eddng, 4X cho c\u00e1c v\u1ecb tr\u00ed \u0103n m\u00f2n.<\/p>\n\n\n\n\n\n\n\n\n
Gi\u1ea3i ph\u00e1p<\/th>\n\u0110\u1ea7u v\u00e0o<\/th>\n\u0110\u1ea7u ra<\/th>\nGFCI<\/th>\nT\u00ednh di \u0111\u1ed9ng<\/th>\nT\u1ed1t nh\u1ea5t cho<\/th>\n<\/tr>\n<\/thead>\n
H\u1ed9p Chia \u0110i\u1ec7n (Spider Box)<\/td>\n\u0110\u1ea7u v\u00e0o kh\u00f3a 30-100A<\/td>\nNhi\u1ec1u \u1ed5 c\u1eafm 15-30A<\/td>\nC\u00f3, t\u00edch h\u1ee3p<\/td>\nCao (tay c\u1ea7m, nh\u1ecf g\u1ecdn)<\/td>\nC\u00f4ng tr\u01b0\u1eddng \u0111a ng\u00e0nh, t\u1ea3i ph\u00e2n t\u00e1n<\/td>\n<\/tr>\n
M\u00e1y ph\u00e1t \u0111i\u1ec7n di \u0111\u1ed9ng<\/td>\nM\u00e1y ph\u00e1t \u0111i\u1ec7n t\u00edch h\u1ee3p<\/td>\n2-6 \u1ed5 c\u1eafm tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\nTrung b\u00ecnh (b\u00e1nh xe, n\u1eb7ng)<\/td>\n\u0110\u1ecba \u0111i\u1ec3m xa, kh\u00f4ng c\u00f3 \u0111i\u1ec7n l\u01b0\u1edbi<\/td>\n<\/tr>\n
B\u1ea3ng \u0110i\u1ec7n T\u1ea1m Th\u1eddi<\/td>\n\u0110i d\u00e2y c\u1ee9ng\/cam-lok<\/td>\nNhi\u1ec1u b\u1ed9 ng\u1eaft m\u1ea1ch, b\u1ed9 c\u1ea5p ngu\u1ed3n<\/td>\n\u1ede c\u1ea5p \u0111\u1ed9 nh\u00e1nh<\/td>\nTh\u1ea5p (l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh)<\/td>\nC\u00e1c \u0111\u1ecba \u0111i\u1ec3m l\u1edbn, ph\u00e2n ph\u1ed1i t\u1eadp trung<\/td>\n<\/tr>\n
GFCI D\u00e2y N\u1ed1i D\u00e0i<\/td>\nC\u1eafm v\u00e0o<\/td>\n1-3 \u1ed5 c\u1eafm<\/td>\nC\u00f3, n\u1ed9i tuy\u1ebfn<\/td>\nCao (nh\u1eb9)<\/td>\nM\u1ed9t d\u1ee5ng c\u1ee5, ch\u1ea1y ng\u1eafn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"Electrical
S\u01a1 \u0111\u1ed3 s\u01a1 \u0111\u1ed3 m\u1ed9t \u0111\u01b0\u1eddng \u0111i\u1ec7n cho h\u1ed9p chia \u0111i\u1ec7n VIOX, m\u00f4 t\u1ea3 chi ti\u1ebft d\u00f2ng \u0111i\u1ec7n t\u1eeb \u0111\u1ea7u v\u00e0o 50A qua c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 GFCI \u0111\u1ebfn c\u00e1c \u1ed5 c\u1eafm.<\/figcaption><\/figure>\n

Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n

H\u1ed9p chia \u0111i\u1ec7n (spider box) \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/strong>
\nH\u1ed9p chia \u0111i\u1ec7n (spider box) ph\u00e2n ph\u1ed1i ngu\u1ed3n \u0111i\u1ec7n t\u1ea1m th\u1eddi t\u1eeb m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n cao duy nh\u1ea5t \u0111\u1ebfn nhi\u1ec1u \u1ed5 c\u1eafm \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng, s\u1ef1 ki\u1ec7n, b\u1ea3o tr\u00ec c\u00f4ng nghi\u1ec7p v\u00e0 \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p.<\/p>\n

H\u1ed9p \u0111\u1ea5u d\u00e2y \u0111i\u1ec7n t\u1ea1m th\u1eddi (spider box) c\u00f3 c\u1ea7n b\u1ea3o v\u1ec7 b\u1eb1ng GFCI kh\u00f4ng?<\/strong>
\nC\u00f3. OSHA 1926.404 v\u00e0 NEC \u0110i\u1ec1u 590 y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 b\u1ed9 ng\u1eaft m\u1ea1ch ch\u1ea1m \u0111\u1ea5t (GFCI) cho t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 c\u1eafm 120 volt, 15, 20 v\u00e0 30 ampe \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u1eafp \u0111\u1eb7t t\u1ea1m th\u1eddi tr\u00ean c\u00e1c c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng. H\u1ea7u h\u1ebft c\u00e1c h\u1ed9p chia \u0111i\u1ec7n t\u00edch h\u1ee3p b\u1ea3o v\u1ec7 GFCI \u0111\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u n\u00e0y m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng.<\/p>\n

\u201cKi\u1ec3u California\u201d c\u00f3 ngh\u0129a l\u00e0 g\u00ec tr\u00ean h\u1ed9p chia \u0111i\u1ec7n?<\/strong>
\nKi\u1ec3u California \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ea7u n\u1ed1i ki\u1ec3u kh\u00f3a CS6365C (ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng) 50 ampe, 125\/250 volt, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ph\u00e2n ph\u1ed1i \u0111i\u1ec7n di \u0111\u1ed9ng. Thu\u1eadt ng\u1eef n\u00e0y m\u00f4 t\u1ea3 lo\u1ea1i \u0111\u1ea7u n\u1ed1i, kh\u00f4ng ph\u1ea3i gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd\u2014c\u00e1c h\u1ed9p spider n\u00e0y ho\u1ea1t \u0111\u1ed9ng tr\u00ean to\u00e0n qu\u1ed1c.<\/p>\n

H\u1ed9p \u0111\u1ea5u d\u00e2y \u0111i\u1ec7n (spider box) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi kh\u00f4ng?<\/strong>
\nC\u00f3, mi\u1ec5n l\u00e0 ch\u00fang c\u00f3 ch\u1ec9 s\u1ed1 NEMA ph\u00f9 h\u1ee3p. H\u1ed9p chia \u0111i\u1ec7n NEMA 3R \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi v\u00e0 ch\u1ed1ng m\u01b0a, m\u01b0a tuy\u1ebft v\u00e0 b\u0103ng gi\u00e1. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (s\u01b0\u01a1ng mu\u1ed1i, h\u00f3a ch\u1ea5t \u0103n m\u00f2n, r\u1eeda b\u1eb1ng v\u00f2i phun), h\u00e3y ch\u1ec9 \u0111\u1ecbnh c\u00e1c ki\u1ec3u NEMA 4X.<\/p>\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 k\u1ebft n\u1ed1i nhi\u1ec1u h\u1ed9p chia \u0111i\u1ec7n (spider box) theo ki\u1ec3u m\u1eafc x\u00edch (daisy-chain)?<\/strong>
\nS\u1eed d\u1ee5ng c\u00e1c model c\u00f3 kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n xuy\u00ean su\u1ed1t: m\u1ed9t \u0111\u1ea7u c\u00f3 \u0111\u1ea7u n\u1ed1i \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u kia c\u00f3 \u0111\u1ea7u n\u1ed1i \u0111\u1ea7u ra t\u01b0\u01a1ng \u1ee9ng. K\u1ebft n\u1ed1i h\u1ed9p chia \u0111i\u1ec7n \u0111\u1ea7u ti\u00ean v\u1edbi ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a b\u1ea1n, sau \u0111\u00f3 ch\u1ea1y c\u00e1p t\u1eeb \u1ed5 c\u1eafm c\u1ea5p ngu\u1ed3n xuy\u00ean su\u1ed1t c\u1ee7a n\u00f3 \u0111\u1ebfn \u0111\u1ea7u v\u00e0o c\u1ee7a h\u1ed9p ti\u1ebfp theo. \u0110i\u1ec1u n\u00e0y m\u1edf r\u1ed9ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng ch\u1ea1y duy nh\u1ea5t m\u00e0 kh\u00f4ng c\u1ea7n n\u1ed1i d\u00e2y.<\/p>\n<\/div>\n

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A spider box is a portable power distribution unit that converts a single high-amperage electrical feed into multiple protected circuits at the point of use. Also called a temporary power distribution box or portable power center, spider boxes are purpose-built for job sites, events, and temporary installations where crews need safe, weather-resistant power close to […]<\/p>\n","protected":false},"author":1,"featured_media":20868,"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-20865","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\/20865","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=20865"}],"version-history":[{"count":2,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20865\/revisions"}],"predecessor-version":[{"id":20867,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20865\/revisions\/20867"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/20868"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=20865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=20865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=20865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}