{"id":19801,"date":"2025-11-13T07:32:39","date_gmt":"2025-11-12T23:32:39","guid":{"rendered":"https:\/\/viox.com\/?p=19801"},"modified":"2025-11-13T07:32:41","modified_gmt":"2025-11-12T23:32:41","slug":"do-old-breakers-need-replacing-dumb-vs-smart","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/do-old-breakers-need-replacing-dumb-vs-smart\/","title":{"rendered":"C\u1ea7u dao c\u1ee7a t\u00f4i \u0111\u00e3 50 n\u0103m tu\u1ed5i.\u201d M\u1ed9t k\u1ef9 s\u01b0 VIOX v\u1ec1 cu\u1ed9c tranh lu\u1eadn \u201cNgu ng\u1ed1c\u201d so v\u1edbi \u201cTh\u00f4ng minh\u201d"},"content":{"rendered":"
\n

\"change<\/p>\n

Ng\u00f4i nh\u00e0 c\u1ee7a b\u1ea1n \u0111\u00e3 50 n\u0103m tu\u1ed5i. B\u1ea1n m\u1edf n\u1eafp b\u1ea3ng \u0111i\u1ec7n v\u00e0 th\u1ea5y m\u1ed9t d\u00e3y \u0111\u1ea7y \u0111\u1ee7 c\u00e1c c\u1ea7u dao Square D QO\u2014nh\u1eefng con ng\u1ef1a th\u1ed3. Ch\u00fang \u0111\u00e3 \u1edf \u0111\u00f3 k\u1ec3 t\u1eeb khi ng\u00f4i nh\u00e0 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng. Ch\u00fang \u0111\u00e3 c\u0169<\/em>.<\/p>\n

V\u00e0 \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn b\u1ea1n suy ngh\u0129. \u201c\u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u01a1 kh\u00ed. N\u00f3 c\u00f3 l\u00f2 xo. L\u00f2 xo c\u00f3 b\u1ecb \u2018m\u1ecfi\u2019 sau 50 n\u0103m kh\u00f4ng? M\u1ee1 c\u00f3 b\u1ecb kh\u00f4 kh\u00f4ng? T\u00f4i c\u00f3 c\u1ea7n thay th\u1ebf ch\u00fang ch\u1ec9 v\u00ec tu\u1ed5i c\u1ee7a ch\u00fang<\/em>?”<\/p>\n

\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi y\u00eau th\u00edch c\u1ee7a t\u00f4i. N\u00f3 h\u1ee3p l\u00fd, c\u00f3 tr\u00e1ch nhi\u1ec7m v\u00e0 n\u1eb1m ngay gi\u1eefa m\u1ed9t \u201cv\u00f9ng x\u00e1m\u201d ph\u00e2n bi\u1ec7t \u201cti\u1ebft ki\u1ec7m\u201d v\u1edbi \u201cnguy hi\u1ec3m\u201d.\u201d<\/p>\n

N\u00f3 c\u0169ng kh\u01a1i d\u1eady m\u1ed9t trong nh\u1eefng cu\u1ed9c tranh lu\u1eadn l\u1edbn nh\u1ea5t trong ng\u00e0nh c\u1ee7a ch\u00fang ta. V\u00e0 t\u00f4i s\u1ebd cho b\u1ea1n bi\u1ebft m\u1ed9t b\u00ed m\u1eadt: b\u1ea1n \u0111ang g\u1ea7n nh\u01b0<\/em> \u0111\u1eb7t c\u00e2u h\u1ecfi \u0111\u00fang.<\/p>\n

\u0110\u1ea7u ti\u00ean, h\u00e3y xem x\u00e9t cu\u1ed9c tranh lu\u1eadn v\u1ec1 \u201ctu\u1ed5i t\u00e1c\u201d, v\u00e0 sau \u0111\u00f3 t\u00f4i s\u1ebd cho b\u1ea1n th\u1ea5y b\u1ea5t<\/em> c\u00e2u h\u1ecfi b\u1ea1n n\u00ean \u0111\u1eb7t ra.<\/p>\n

1. Cu\u1ed9c tranh lu\u1eadn \u201cBom h\u1eb9n gi\u1edd\u201d so v\u1edbi \u201cKh\u00f4ng h\u1ecfng th\u00ec \u0111\u1eebng s\u1eeda\u201d<\/h2>\n

\"Old<\/p>\n

Khi b\u1ea1n h\u1ecfi, \u201cC\u1ea7u dao c\u0169 c\u00f3 b\u1ecb h\u1ecfng kh\u00f4ng?\u201d, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c hai c\u00e2u tr\u1ea3 l\u1eddi t\u1eeb hai phe kh\u00e1c nhau.<\/p>\n

Phe A: Nh\u00f3m \u201cKh\u00f4ng h\u1ecfng th\u00ec \u0111\u1eebng s\u1eeda\u201d<\/h4>\n

Phe n\u00e0y n\u00f3i r\u1eb1ng c\u1ea7u dao l\u00e0 m\u1ed9t th\u1ee5 \u0111\u1ed9ng<\/em> thi\u1ebft b\u1ecb. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ed9ng c\u01a1 quay. N\u00f3 ch\u1ec9 n\u1eb1m \u0111\u00f3. Mi\u1ec5n l\u00e0 n\u00f3 ch\u01b0a bao gi\u1edd b\u1ecb ng\u1eadp trong l\u0169 l\u1ee5t, kh\u00f4ng b\u1ecb \u0103n m\u00f2n r\u00f5 r\u00e0ng v\u00e0 ch\u01b0a b\u1ecb \u201ct\u1eadp th\u1ec3 d\u1ee5c\u201d \u0111\u1ebfn ch\u1ebft, n\u00f3 v\u1eabn t\u1ed1t nh\u01b0 50 n\u0103m tr\u01b0\u1edbc. \u0110\u1eb7c bi\u1ec7t, Square D QO l\u00e0 m\u1ed9t huy\u1ec1n tho\u1ea1i. N\u00f3 c\u00f3 l\u1ebd s\u1ebd s\u1ed1ng l\u00e2u h\u01a1n t\u1ea5t c\u1ea3 ch\u00fang ta.<\/p>\n

Phe B: Nh\u00f3m \u201cBom h\u1eb9n gi\u1edd\u201d<\/h4>\n

Phe n\u00e0y (trong \u0111\u00f3 c\u00f3 t\u00f4i, h\u1ea7u h\u1ebft c\u00e1c ng\u00e0y) s\u1ebd n\u00f3i v\u1edbi b\u1ea1n r\u1eb1ng \u201ckh\u00f4ng h\u1ecfng\u201d l\u00e0 m\u1ed9t tri\u1ebft l\u00fd nguy hi\u1ec3m v\u00e0 thi\u1ebfu hi\u1ec3u bi\u1ebft \u0111\u1ed1i v\u1edbi m\u1ed9t thi\u1ebft b\u1ecb an to\u00e0n cho cu\u1ed9c s\u1ed1ng.<\/p>\n

T\u1ea1i sao? B\u1edfi v\u00ec m\u1ed9t c\u1ea7u dao \u201ch\u1ecfng\u201d kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 \u201c\u0111\u00e8n s\u1ebd kh\u00f4ng b\u1eadt\u201d.\u201d
\nM\u1ed9t c\u1ea7u dao \u201ch\u1ecfng\u201d c\u00f3 ngh\u0129a l\u00e0 \u201cn\u00f3 kh\u00f4ng ng\u1eaft khi n\u00f3 ph\u1ea3i ng\u1eaft.\u201d<\/strong><\/p>\n

B\u00ean trong h\u1ed9p 50 n\u0103m tu\u1ed5i \u0111\u00f3, ch\u1ea5t b\u00f4i tr\u01a1n do nh\u00e0 m\u00e1y b\u00f4i \u0111\u00e3 kh\u00f4 th\u00e0nh s\u00e1p d\u00ednh. C\u00e1c l\u00f2 xo \u0111\u00e3<\/em> ch\u1ecbu l\u1ef1c c\u0103ng li\u00ean t\u1ee5c trong 50 n\u0103m v\u00e0 \u0111\u00e3<\/em> m\u1ea5t \u0111i m\u1ed9t s\u1ed1 \u201cl\u1ef1c \u0111\u1ea9y\u201d c\u1ee7a ch\u00fang. C\u00e1c ti\u1ebfp \u0111i\u1ec3m l\u00e0<\/em> b\u1ecb oxy h\u00f3a nh\u1eb9.<\/p>\n

K\u1ebft qu\u1ea3: m\u1ed9t c\u1ea7u dao m\u00e0 n\u00ean<\/em> c\u00f3 th\u1ec3 ng\u1eaft \u1edf 15,1 Amps b\u00e2y gi\u1edd c\u00f3 th\u1ec3 ch\u1ec9 ng\u1eaft \u1edf 25 Amps. Ho\u1eb7c, trong m\u1ed9t \u0111o\u1ea1n m\u1ea1ch ng\u1eafn, n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng ng\u1eaft ch\u00fat n\u00e0o. N\u00f3 ch\u1ec9 n\u1eb1m \u0111\u00f3, \u0111\u1ec3 d\u00e2y trong t\u01b0\u1eddng c\u1ee7a b\u1ea1n bi\u1ebfn th\u00e0nh m\u1ed9t b\u1ed9 ph\u1eadn n\u01b0\u1edbng b\u00e1nh m\u00ec 1.000 watt.<\/p>\n

Nh\u01b0ng \u0111\u00e2y l\u00e0 kho\u1ea3nh kh\u1eafc \u201cAha!\u201d: To\u00e0n b\u1ed9 cu\u1ed9c tranh lu\u1eadn n\u00e0y l\u00e0 m\u1ed9t s\u1ef1 xao nh\u00e3ng. C\u00e1c b\u1ea5t<\/em> l\u00fd do \u0111\u1ec3 n\u00e2ng c\u1ea5p b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a b\u1ea1n h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 g\u00ec<\/em> li\u00ean quan \u0111\u1ebfn tu\u1ed5i c\u1ee7a n\u00f3.<\/p>\n

\u0110\u00f3 l\u00e0 v\u1ec1 tr\u00ed th\u00f4ng minh<\/em>.<\/strong><\/p>\n

2. B\u1ea1n \u0111ang \u0111\u1eb7t c\u00e2u h\u1ecfi sai: Kh\u00f4ng ph\u1ea3i \u201cC\u0169 so v\u1edbi M\u1edbi\u201d, m\u00e0 l\u00e0 \u201cNgu ng\u1ed1c so v\u1edbi Th\u00f4ng minh\u201d<\/h2>\n

\"It's<\/p>\n

\u0110\u00e2y l\u00e0 \u0111i\u1ec3m xoay. S\u1ef1 thay \u0111\u1ed5i quan tr\u1ecdng nh\u1ea5t trong an to\u00e0n \u0111i\u1ec7n trong 30 n\u0103m qua kh\u00f4ng ph\u1ea3i l\u00e0 l\u00e0m cho c\u1ea7u dao \u201cm\u1edbi h\u01a1n\u201d. \u0110\u00f3 l\u00e0 l\u00e0m cho ch\u00fang \u201cth\u00f4ng minh h\u01a1n.\u201d<\/strong><\/p>\n

Square D QO 50 n\u0103m tu\u1ed5i c\u1ee7a b\u1ea1n l\u00e0 m\u1ed9t C\u1ea7u dao \u201cNgu ng\u1ed1c\u201d.
\nM\u1ed9t VIOX m\u1edbi AFCI\/GFCI<\/a> l\u00e0 m\u1ed9t C\u1ea7u dao \u201cTh\u00f4ng minh\u201d.<\/p>\n

C\u1ea7u dao \u201cNgu ng\u1ed1c\u201d (B\u1ea3n g\u1ed1c n\u0103m 1970 c\u1ee7a b\u1ea1n)<\/h4>\n