{"id":12515,"date":"2024-04-23T18:17:36","date_gmt":"2024-04-23T10:17:36","guid":{"rendered":"https:\/\/boqiled.com\/?p=12515"},"modified":"2025-12-03T17:14:48","modified_gmt":"2025-12-03T09:14:48","slug":"understanding-wiring-is-the-black-wire-positive-or-negative","status":"publish","type":"post","link":"https:\/\/boqiled.com\/vi\/understanding-wiring-is-the-black-wire-positive-or-negative\/","title":{"rendered":"Hi\u1ec3u V\u1ec1 \u0110\u1ea5u D\u00e2y: D\u00e2y M\u00e0u \u0110en L\u00e0 D\u01b0\u01a1ng Hay \u00c2m?"},"content":{"rendered":"

\u0110i\u1ec7n l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd. N\u00f3 th\u1eafp s\u00e1ng ng\u00f4i nh\u00e0 c\u1ee7a ch\u00fang ta v\u00e0 v\u1eadn h\u00e0nh c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng. Nh\u01b0ng n\u00f3 c\u0169ng c\u00f3 th\u1ec3 nguy hi\u1ec3m n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u00fang c\u00e1ch. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c hi\u1ec3u c\u00e1c quy \u01b0\u1edbc v\u1ec1 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u1ef1c t\u00ednh c\u1ee7a c\u00e1c d\u00e2y kh\u00e1c nhau, l\u00e0 r\u1ea5t quan tr\u1ecdng. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u m\u1ed9t c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn: D\u00e2y m\u00e0u \u0111en l\u00e0 d\u01b0\u01a1ng hay \u00e2m?<\/p>\n\n\n\n

M\u00e3 M\u00e0u trong H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n<\/h2>\n\n\n\n

M\u00e3 m\u00e0u trong h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3. Trong l\u1ecbch s\u1eed, m\u00e0u d\u00e2y \u0111\u00e3 gi\u00fap c\u00e1c th\u1ee3 \u0111i\u1ec7n v\u00e0 nh\u1eefng ng\u01b0\u1eddi t\u1ef1 l\u1eafp \u0111\u1eb7t nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh ch\u1ee9c n\u0103ng c\u1ee7a t\u1eebng d\u00e2y. M\u1eb7c d\u00f9 c\u00e1c qu\u1ed1c gia kh\u00e1c nhau c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c nhau, m\u1ed9t s\u1ed1 m\u00e0u d\u00e2y \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn ph\u1ed5 bi\u1ebfn, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n to\u00e0n c\u1ea7u.<\/p>\n\n\n\n

V\u00ed d\u1ee5, trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i t\u1ea1i Hoa K\u1ef3, d\u00e2y m\u00e0u \u0111en th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m d\u00e2y n\u00f3ng. \u0110\u00e2y l\u00e0 nh\u1eefng d\u00e2y mang \u0111i\u1ec7n t\u1eeb b\u1ea3ng \u0111i\u1ec7n \u0111\u1ebfn \u0111i\u1ec3m \u0111\u00edch\u2014c\u00f3 th\u1ec3 l\u00e0 \u0111\u00e8n chi\u1ebfu s\u00e1ng, \u1ed5 c\u1eafm ho\u1eb7c thi\u1ebft b\u1ecb. S\u1ef1 ti\u00eau chu\u1ea9n h\u00f3a n\u00e0y gi\u00fap ng\u0103n ng\u1eeba tai n\u1ea1n \u0111i\u1ec7n v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi c\u00f4ng vi\u1ec7c b\u1ea3o tr\u00ec ho\u1eb7c s\u1eeda ch\u1eefa c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c qu\u1ed1c gia ch\u00e2u \u00c2u th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u1ea3ng m\u00e0u kh\u00e1c. V\u00ed d\u1ee5, t\u1ea1i V\u01b0\u01a1ng qu\u1ed1c Anh, d\u00e2y c\u00f3 \u0111i\u1ec7n th\u01b0\u1eddng c\u00f3 m\u00e0u n\u00e2u. S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ti\u00eau chu\u1ea9n n\u00e0y c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn cho nh\u1eefng ng\u01b0\u1eddi quen v\u1edbi quy \u01b0\u1edbc d\u00e2y \u0111i\u1ec7n c\u1ee7a M\u1ef9. Tuy nhi\u00ean, vi\u1ec7c bi\u1ebft c\u00e1c m\u00e0u d\u00e2y c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i qu\u1ed1c gia c\u1ee7a m\u00ecnh l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 th\u1ef1c h\u00e0nh \u0111i\u1ec7n an to\u00e0n.<\/p>\n\n\n\n

H\u00e3y xem x\u00e9t m\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 minh h\u1ecda c\u00e1ch ki\u1ebfn th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng:<\/p>\n\n\n\n

H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t ch\u1ee7 nh\u00e0 \u0111ang c\u1ed1 g\u1eafng l\u1eafp \u0111\u1eb7t qu\u1ea1t tr\u1ea7n. T\u1ea1i M\u1ef9, h\u1ecd s\u1ebd mong \u0111\u1ee3i k\u1ebft n\u1ed1i d\u00e2y ngu\u1ed3n c\u1ee7a qu\u1ea1t v\u1edbi d\u00e2y m\u00e0u \u0111en t\u1eeb h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ee7a ng\u00f4i nh\u00e0. N\u1ebfu h\u1ecd \u1edf Anh, h\u1ecd s\u1ebd t\u00ecm d\u00e2y m\u00e0u n\u00e2u thay th\u1ebf. Vi\u1ec7c bi\u1ebft \u0111\u00fang m\u00e0u c\u1ee7a d\u00e2y c\u00f3 \u0111i\u1ec7n t\u1ea1i v\u1ecb tr\u00ed c\u1ee5 th\u1ec3 c\u1ee7a h\u1ecd gi\u00fap ng\u0103n ng\u1eeba nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt ho\u1eb7c l\u1eafp \u0111\u1eb7t sai.<\/p>\n\n\n\n

H\u01a1n n\u1eefa, d\u00e2y trung t\u00ednh, ho\u00e0n th\u00e0nh m\u1ea1ch \u0111i\u1ec7n b\u1eb1ng c\u00e1ch \u0111\u01b0a d\u00f2ng \u0111i\u1ec7n tr\u1edf v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n, th\u01b0\u1eddng c\u00f3 m\u00e0u tr\u1eafng t\u1ea1i M\u1ef9 v\u00e0 m\u00e0u xanh d\u01b0\u01a1ng t\u1ea1i ch\u00e2u \u00c2u. D\u00e2y n\u1ed1i \u0111\u1ea5t, c\u1ea7n thi\u1ebft cho an to\u00e0n \u0111\u1ec3 ng\u0103n ng\u1eeba \u0111i\u1ec7n gi\u1eadt, th\u01b0\u1eddng c\u00f3 m\u00e0u xanh l\u00e1 ho\u1eb7c \u0111\u1ed3ng tr\u1ea7n t\u1ea1i M\u1ef9 v\u00e0 m\u00e0u xanh l\u00e1-v\u00e0ng s\u1ecdc t\u1ea1i ch\u00e2u \u00c2u.<\/p>\n\n\n\n

M\u00e0u c\u1ee7a d\u00e2y kh\u00f4ng ch\u1ec9 mang t\u00ednh th\u1ea9m m\u1ef9\u2014n\u00f3 bi\u1ec3u th\u1ecb m\u1ee5c \u0111\u00edch c\u1ee7a d\u00e2y trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n. Nh\u1eefng m\u00e0u n\u00e0y gi\u00fap duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 an to\u00e0n trong c\u00e1c l\u1eafp \u0111\u1eb7t. H\u00e3y ph\u00e2n t\u00edch c\u00e1c quy \u01b0\u1edbc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) v\u00e0 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC).<\/p>\n\n\n\n

\"\"
C\u00e1c Qu\u1ed1c Gia Kh\u00e1c Nhau v\u1ec1 M\u00e0u D\u00e2y \u0110i\u1ec7n t\u1eeb C\u00f4ng Ngh\u1ec7 \u0110i\u1ec7n<\/figcaption><\/figure>\n\n\n\n

H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n AC<\/h3>\n\n\n\n

Trong c\u00e1c t\u00f2a nh\u00e0 d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i t\u1ea1i Hoa K\u1ef3, c\u00e1c m\u00e0u d\u00e2y ti\u00eau chu\u1ea9n l\u00e0:<\/p>\n\n\n\n

  • D\u00e2y M\u00e0u \u0110en<\/strong>: \u0110\u00e2y l\u00e0 d\u00e2y n\u00f3ng ho\u1eb7c d\u00e2y c\u00f3 \u0111i\u1ec7n, mang \u0111i\u1ec7n t\u1eeb b\u1ea3ng \u0111i\u1ec7n \u0111\u1ebfn thi\u1ebft b\u1ecb ho\u1eb7c \u0111\u00e8n chi\u1ebfu s\u00e1ng.<\/li>
  • D\u00e2y M\u00e0u Tr\u1eafng<\/strong>: \u0110\u01b0\u1ee3c g\u1ecdi l\u00e0 d\u00e2y trung t\u00ednh, n\u00f3 \u0111\u01b0a \u0111i\u1ec7n t\u1eeb thi\u1ebft b\u1ecb tr\u1edf l\u1ea1i b\u1ea3ng \u0111i\u1ec7n, ho\u00e0n th\u00e0nh m\u1ea1ch \u0111i\u1ec7n.<\/li>
  • D\u00e2y M\u00e0u Xanh L\u00e1 ho\u1eb7c D\u00e2y Tr\u1ea7n<\/strong>: \u0110\u00e2y l\u00e0 d\u00e2y n\u1ed1i \u0111\u1ea5t. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t bi\u1ec7n ph\u00e1p an to\u00e0n, cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn cho d\u00f2ng \u0111i\u1ec7n trong tr\u01b0\u1eddng h\u1ee3p s\u1ef1 c\u1ed1, ng\u0103n ng\u1eeba nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt.<\/li><\/ul>\n\n\n\n

    Nh\u1eefng d\u00e2y n\u00e0y ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau trong h\u1ec7 th\u1ed1ng AC, n\u01a1i d\u00f2ng \u0111i\u1ec7n ch\u1ea3y theo c\u00e1c h\u01b0\u1edbng xen k\u1ebd, l\u00e0m cho kh\u00e1i ni\u1ec7m d\u01b0\u01a1ng v\u00e0 \u00e2m, nh\u01b0 \u0111\u01b0\u1ee3c bi\u1ebft trong h\u1ec7 th\u1ed1ng DC, kh\u00f4ng \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

    H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n DC<\/h3>\n\n\n\n

    Trong h\u1ec7 th\u1ed1ng DC, nh\u01b0 trong xe c\u1ed9 ho\u1eb7c thi\u1ebft l\u1eadp t\u1ea5m pin m\u1eb7t tr\u1eddi, m\u00e0u d\u00e2y ch\u1ec9 ra:<\/p>\n\n\n\n

    • D\u00e2y M\u00e0u \u0110en<\/strong>: Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m d\u00e2y \u00e2m, n\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111\u01b0\u1eddng tr\u1edf v\u1ec1 cho d\u00f2ng \u0111i\u1ec7n tr\u1edf l\u1ea1i ngu\u1ed3n \u0111i\u1ec7n.<\/li>
    • D\u00e2y M\u00e0u \u0110\u1ecf<\/strong>: D\u00e2y n\u00e0y l\u00e0 d\u01b0\u01a1ng, mang \u0111i\u1ec7n t\u1eeb ngu\u1ed3n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/li><\/ul>\n\n\n\n

      Hi\u1ec3u nh\u1eefng quy \u01b0\u1edbc n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng cho b\u1ea5t k\u1ef3 ai l\u00e0m vi\u1ec7c v\u1edbi h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trong c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 l\u1eafp \u0111\u1eb7t \u0111\u00e8n LED.<\/p>\n\n\n\n

      Vai Tr\u00f2 c\u1ee7a D\u00e2y M\u00e0u \u0110en trong H\u1ec7 Th\u1ed1ng \u0110i\u1ec7n<\/h2>\n\n\n\n

      D\u00e2y m\u00e0u \u0111en th\u01b0\u1eddng mang \u0111i\u1ec7n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb. \u0110i\u1ec1u n\u00e0y \u0111\u00fang trong c\u1ea3 nh\u00e0 \u1edf v\u00e0 c\u00e1c t\u00f2a nh\u00e0 l\u1edbn h\u01a1n. Hi\u1ec3u ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ebfn t\u1eeb \u0111\u00e2u c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ng\u1eeba \u0111i\u1ec7n gi\u1eadt.<\/p>\n\n\n\n

      C\u00e1c C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p v\u00e0 Hi\u1ec3u L\u1ea7m<\/h3>\n\n\n\n

      H\u00e3y gi\u1ea3i quy\u1ebft m\u1ed9t s\u1ed1 th\u1eafc m\u1eafc th\u01b0\u1eddng g\u1eb7p ph\u00e1t sinh v\u1edbi c\u00e1c quy \u01b0\u1edbc v\u1ec1 d\u00e2y \u0111i\u1ec7n:<\/p>\n\n\n\n

      • D\u00e2y m\u00e0u \u0111en l\u00e0 d\u01b0\u01a1ng hay \u00e2m?<\/strong> Trong DC, d\u00e2y m\u00e0u \u0111en l\u00e0 \u00e2m, v\u00e0 trong AC, n\u00f3 l\u00e0 d\u00e2y c\u00f3 \u0111i\u1ec7n ho\u1eb7c d\u00e2y n\u00f3ng.<\/li>
      • Ba d\u00e2y m\u00e0u trong k\u1ebft n\u1ed1i ba pha l\u00e0 g\u00ec?<\/strong> Ch\u00fang bao g\u1ed3m \u0111en, \u0111\u1ecf v\u00e0 xanh d\u01b0\u01a1ng cho c\u00e1c pha, tr\u1eafng cho trung t\u00ednh, v\u00e0 xanh l\u00e1 ho\u1eb7c d\u00e2y tr\u1ea7n cho n\u1ed1i \u0111\u1ea5t.<\/li>
      • D\u00e2y trung t\u00ednh l\u00e0 d\u01b0\u01a1ng hay \u00e2m?<\/strong> Trong AC, d\u00e2y trung t\u00ednh kh\u00f4ng d\u01b0\u01a1ng c\u0169ng kh\u00f4ng \u00e2m v\u00ec d\u00f2ng \u0111i\u1ec7n xen k\u1ebd; trong DC, d\u00e2y trung t\u00ednh th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u1ed3ng ngh\u0129a v\u1edbi \u00e2m.<\/li><\/ul>\n\n\n\n

        \u0110\u00e8n LED v\u00e0 Nh\u1eefng L\u01b0u \u00dd v\u1ec1 H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n<\/h3>\n\n\n\n

        C\u00f4ng ngh\u1ec7 LED kh\u00f4ng ch\u1ec9 mang l\u1ea1i hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u01b0\u1ee3t tr\u1ed9i m\u00e0 c\u00f2n \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n nh\u1eafc c\u1ea9n th\u1eadn v\u1ec1 th\u1ef1c h\u00e0nh h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd:<\/p>\n\n\n\n

        • Hi\u1ec7u qu\u1ea3<\/strong>: \u0110\u00e8n LED cung c\u1ea5p nhi\u1ec1u lumen h\u01a1n tr\u00ean m\u1ed7i watt so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p chi\u1ebfu s\u00e1ng truy\u1ec1n th\u1ed1ng, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/li>
        • H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n cho \u0110\u00e8n LED<\/strong>: \u0110\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u00fang l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft, v\u00ec k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u00fang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn tr\u1ee5c tr\u1eb7c ho\u1eb7c gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/li><\/ul>\n\n\n\n

          Bi\u1ec7n Ph\u00e1p An To\u00e0n v\u00e0 Th\u1ef1c H\u00e0nh T\u1ed1t Nh\u1ea5t<\/h3>\n\n\n\n

          Khi x\u1eed l\u00fd h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n, lu\u00f4n \u01b0u ti\u00ean an to\u00e0n:<\/p>\n\n\n\n

          • T\u1eaft ngu\u1ed3n \u0111i\u1ec7n<\/strong>: Lu\u00f4n \u0111\u1ea3m b\u1ea3o ngu\u1ed3n \u0111i\u1ec7n \u0111\u00e3 t\u1eaft t\u1ea1i b\u1ed9 ng\u1eaft m\u1ea1ch ch\u00ednh tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u b\u1ea5t k\u1ef3 c\u00f4ng vi\u1ec7c \u0111i\u1ec7n n\u00e0o \u0111\u1ec3 tr\u00e1nh \u0111i\u1ec7n gi\u1eadt.<\/li>
          • S\u1eed D\u1ee5ng D\u1ee5ng C\u1ee5 Ph\u00f9 H\u1ee3p<\/strong>: S\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 c\u00e1ch \u0111i\u1ec7n v\u00e0 trang b\u1ecb thi\u1ebft b\u1ecb b\u1ea3o h\u1ed9 ph\u00f9 h\u1ee3p.<\/li>
          • Tu\u00e2n Th\u1ee7 Quy \u0110\u1ecbnh \u0110\u1ecba Ph\u01b0\u01a1ng<\/strong>: L\u00e0m quen v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh v\u00e0 ti\u00eau chu\u1ea9n \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng.<\/li><\/ul>\n\n\n\n

            C\u00e1ch Ki\u1ec3m Tra C\u1ef1c T\u00ednh c\u1ee7a D\u00e2y \u0110i\u1ec7n<\/h4>\n\n\n\n

            B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng \u0111\u1ec3 ki\u1ec3m tra c\u1ef1c t\u00ednh c\u1ee7a d\u00e2y \u0111i\u1ec7n. T\u1eaft ngu\u1ed3n, k\u1ebft n\u1ed1i \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng v\u1edbi c\u00e1c d\u00e2y c\u1ea7n ki\u1ec3m tra, sau \u0111\u00f3 b\u1eadt ngu\u1ed3n l\u1ea1i m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u1ec3 \u0111\u1ecdc \u0111i\u1ec7n \u00e1p. C\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 cho b\u1ea1n bi\u1ebft d\u00e2y n\u00e0o \u0111ang mang \u0111i\u1ec7n v\u00e0 d\u00e2y n\u00e0o kh\u00f4ng.<\/p>\n\n\n\n

            L\u1eddi Khuy\u00ean Chuy\u00ean Nghi\u1ec7p v\u1ec1 H\u1ec7 Th\u1ed1ng D\u00e2y \u0110i\u1ec7n<\/h4>\n\n\n\n

            \u0110\u00f4i khi, l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t l\u00e0 g\u1ecdi th\u1ee3 chuy\u00ean nghi\u1ec7p. Th\u1ee3 \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o \u0111\u1ec3 hi\u1ec3u c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 tu\u00e2n th\u1ee7 \u0111\u00fang ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n

            C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n
            \n

            \u2013 T\u1ea1i sao vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u1ef1c t\u00ednh c\u1ee7a d\u00e2y \u0111i\u1ec7n l\u1ea1i quan tr\u1ecdng?<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            Bi\u1ebft \u0111\u01b0\u1ee3c d\u00e2y n\u00e0o \u0111ang mang \u0111i\u1ec7n c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba nguy c\u01a1 b\u1ecb \u0111i\u1ec7n gi\u1eadt.<\/p>\n<\/div><\/div>\n\n\n\n

            \u2013 D\u00e2y m\u00e0u \u0111en c\u00f3 th\u1ec3 l\u00e0 d\u00e2y d\u01b0\u01a1ng kh\u00f4ng?<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            C\u00f3, trong m\u1ed9t s\u1ed1 c\u1ea5u h\u00ecnh DC nh\u1ea5t \u0111\u1ecbnh, d\u00e2y m\u00e0u \u0111en c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m d\u00e2y d\u01b0\u01a1ng.<\/p>\n<\/div><\/div>\n\n\n\n

            \u2013 C\u00e1c m\u00e0u d\u00e2y kh\u00e1c bi\u1ec3u th\u1ecb c\u1ef1c t\u00ednh nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            Th\u00f4ng th\u01b0\u1eddng, d\u00e2y m\u00e0u \u0111\u1ecf ho\u1eb7c n\u00e2u bi\u1ec3u th\u1ecb c\u1ef1c d\u01b0\u01a1ng, c\u00f2n d\u00e2y m\u00e0u xanh d\u01b0\u01a1ng ho\u1eb7c \u0111en bi\u1ec3u th\u1ecb c\u1ef1c \u00e2m.<\/p>\n<\/div><\/div>\n\n\n\n

            \u2013 M\u1eb9o cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u1ec1 an to\u00e0n khi \u0111\u1ea5u d\u00e2y \u0111i\u1ec7n<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            Lu\u00f4n t\u1eaft ngu\u1ed3n tr\u01b0\u1edbc khi l\u00e0m vi\u1ec7c v\u1edbi d\u00e2y \u0111i\u1ec7n.<\/p>\n<\/div><\/div>\n\n\n\n

            \u2013 C\u00f3 nh\u1eefng t\u00e0i li\u1ec7u n\u00e0o \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 quy \u01b0\u1edbc \u0111\u1ea5u d\u00e2y?<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            S\u1ed5 tay an to\u00e0n \u0111i\u1ec7n, blog c\u1ee7a th\u1ee3 \u0111i\u1ec7n chuy\u00ean nghi\u1ec7p v\u00e0 c\u00e1c kh\u00f3a h\u1ecdc l\u00e0 nh\u1eefng ngu\u1ed3n t\u00e0i li\u1ec7u tuy\u1ec7t v\u1eddi.<\/p>\n<\/div><\/div>\n\n\n\n

            \u2013 Nh\u1eefng r\u1ee7i ro khi x\u00e1c \u0111\u1ecbnh sai d\u00e2y \u0111i\u1ec7n l\u00e0 g\u00ec?<\/strong><\/p><\/div>

            <\/path><\/path><\/svg><\/div>
            <\/path><\/path><\/svg><\/div><\/div><\/div>
            \n

            X\u00e1c \u0111\u1ecbnh sai d\u00e2y \u0111i\u1ec7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111o\u1ea3n m\u1ea1ch, \u0111i\u1ec7n gi\u1eadt v\u00e0 th\u1eadm ch\u00ed l\u00e0 ch\u00e1y n\u1ed5.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n

            S\u1ef1 k\u1ebft lu\u1eadn<\/strong><\/h2>\n\n\n\n

            Bi\u1ebft \u0111\u01b0\u1ee3c d\u00e2y m\u00e0u \u0111en l\u00e0 d\u01b0\u01a1ng hay \u00e2m kh\u00f4ng ch\u1ec9 l\u00e0 ki\u1ebfn th\u1ee9c k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n l\u00e0 bi\u1ec7n ph\u00e1p an to\u00e0n. D\u00f9 b\u1ea1n l\u00e0 th\u1ee3 \u0111i\u1ec7n chuy\u00ean nghi\u1ec7p, ng\u01b0\u1eddi \u0111am m\u00ea t\u1ef1 l\u00e0m hay ch\u1ec9 l\u00e0 ng\u01b0\u1eddi mu\u1ed1n hi\u1ec3u c\u00e1ch ng\u00f4i nh\u00e0 c\u1ee7a m\u00ecnh ho\u1ea1t \u0111\u1ed9ng, vi\u1ec7c t\u00f4n tr\u1ecdng c\u00e1c quy \u01b0\u1edbc \u0111\u1ea5u d\u00e2y v\u00e0 hi\u1ec3u nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u1ec1 c\u1ef1c t\u00ednh \u0111i\u1ec7n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu.<\/p>","protected":false},"excerpt":{"rendered":"

            Electricity is a powerful tool. It lights up our homes and powers our appliances. But it can also be dangerous if not handled correctly. That’s why understanding wiring conventions, especially the polarity of different wires, is crucial. In this article, we dive into a common question: Is the black wire positive or negative? Color Coding […]<\/p>\n","protected":false},"author":1,"featured_media":11443,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Understanding Wiring: Is the Black Wire Positive or Negative?","_seopress_titles_desc":"Exploring whether the black wire is positive or negative helps ensure safety in electrical projects. Learn the right wiring conventions here.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[20],"tags":[],"class_list":{"0":"post-12515","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-technical-guide"},"_links":{"self":[{"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/posts\/12515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/comments?post=12515"}],"version-history":[{"count":0,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/posts\/12515\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/media\/11443"}],"wp:attachment":[{"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/media?parent=12515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/categories?post=12515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boqiled.com\/vi\/wp-json\/wp\/v2\/tags?post=12515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}