{"id":1963,"date":"2026-05-05T17:36:23","date_gmt":"2026-05-05T17:36:23","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=1963"},"modified":"2026-05-05T17:39:35","modified_gmt":"2026-05-05T17:39:35","slug":"what-size-circuit-breaker-do-i-need","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/what-size-circuit-breaker-do-i-need\/","title":{"rendered":"T\u00f4i c\u1ea7n c\u1ea7u dao \u0111i\u1ec7n c\u00f3 k\u00edch th\u01b0\u1edbc n\u00e0o?"},"content":{"rendered":"

L\u1ea5y k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c c\u1ea7u dao<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 gi\u1eef cho h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n an to\u00e0n v\u00e0 tr\u00e1nh b\u1ea5t k\u1ef3 tai n\u1ea1n n\u00e0o nh\u01b0 tia l\u1eeda khi \u0111i\u1ec7n \u0111ang ch\u1ea3y qua c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n mua m\u1ed9t m\u00e1y \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, t\u1ea5m pin m\u1eb7t tr\u1eddi ho\u1eb7c th\u1eadm ch\u00ed m\u1ed9t b\u1ebfp \u0111i\u1ec7n, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 b\u1ea1n ph\u1ea3i ch\u1ecdn m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n m\u00e0 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n l\u1ea5y t\u1eeb l\u01b0\u1edbi \u0111i\u1ec7n (ampe). H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n hi\u1ec3u c\u00e1ch t\u00ednh k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 lo\u1ea1i n\u00e0o b\u1ea1n n\u00ean mua c\u0169ng nh\u01b0 gi\u1ea3i \u0111\u00e1p m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

C\u00e1ch x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch \u2013 T\u1ed5ng quan<\/h2>\n

K\u00edch th\u01b0\u1edbc c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch c\u1ee7a b\u1ea1n, t\u1ee9c l\u00e0 l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng (\u0111o b\u1eb1ng ampe) m\u00e0 m\u1ea1ch c\u1ee7a b\u1ea1n s\u1ebd c\u1ea7n \u0111\u1ec3 t\u1ef1 b\u1ea3o v\u1ec7, tr\u1edf n\u00ean r\u1ea5t quan tr\u1ecdng. C\u00e1c b\u01b0\u1edbc sau s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch nh\u01b0 sau:<\/p>\n

    \n
  1. X\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t thi\u1ebft b\u1ecb<\/span>: Tham kh\u1ea3o nh\u00e3n thi\u1ebft b\u1ecb ho\u1eb7c s\u1eed d\u1ee5ng h\u01b0\u1edbng d\u1eabn \u0111i k\u00e8m v\u1edbi thi\u1ebft b\u1ecb (v\u00ed d\u1ee5: 3000 watt cho bi\u1ebfn t\u1ea7n, 5000 watt cho b\u1ebfp, v.v.).<\/li>\n
  2. T\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n<\/span>: S\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c sau: Ampe = Watt\/Volt. V\u00ed d\u1ee5 nhanh, s\u1eed d\u1ee5ng bi\u1ebfn t\u1ea7n 3000W k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ch 120V c\u00f3 th\u1ec3 l\u1ea5y 25 ampe (3000 \/ 120 = 25).<\/li>\n
  3. \u00c1p d\u1ee5ng Quy t\u1eafc 80%<\/span>: B\u1ed9 ng\u1eaft m\u1ea1ch n\u00ean \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u00fang \u0111\u1ec3 cho ph\u00e9p t\u0103ng 125% tr\u00ean nhu c\u1ea7u li\u00ean t\u1ee5c c\u1ee7a t\u1ea3i nh\u1eb1m ng\u0103n ng\u1eeba qu\u00e1 nhi\u1ec7t. V\u00ed d\u1ee5, 25 ampe nh\u00e2n v\u1edbi 1,25 = 31,25 ampe, sau \u0111\u00f3 l\u00e0m tr\u00f2n l\u00ean k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch ti\u00eau chu\u1ea9n l\u1edbn h\u01a1n ti\u1ebfp theo (trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u00e0 30 ampe).<\/li>\n
  4. Ch\u1ecdn d\u00e2y m\u1ea1ch<\/span>: Ch\u1ecdn d\u00e2y m\u1ea1ch t\u01b0\u01a1ng th\u00edch v\u1edbi k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch. \u0110\u1ec3 k\u1ebft n\u1ed1i m\u1ea1ch v\u1edbi b\u1ed9 ng\u1eaft 30 ampe, b\u1ea1n s\u1ebd c\u1ea7n s\u1eed d\u1ee5ng d\u00e2y c\u1ee1 10. \u0110\u1ed1i v\u1edbi b\u1ed9 ng\u1eaft 50 ampe, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng d\u00e2y c\u1ee1 6.<\/li>\n<\/ol>\n

    C\u00e1c k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft ph\u1ed5 bi\u1ebfn nh\u1ea5t \u1edf B\u1eafc M\u1ef9 l\u00e0: 15A, 20A, 30A, 40A, 50A, 60A, 70A, 80A, 100A, 125A, 150A v\u00e0 200A.<\/p>\n

    \"MCB\"<\/p>\n

    C\u00e1c lo\u1ea1i b\u1ed9 ng\u1eaft: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang lo\u1ea1i?<\/h2>\n

    Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u1ec1u gi\u1ed1ng nhau. D\u1ef1a tr\u00ean t\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ea3ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n, b\u1ea1n s\u1ebd ch\u1ecdn lo\u1ea1i b\u1ed9 ng\u1eaft m\u1ea1ch ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh.<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch ti\u00eau chu\u1ea9n<\/h3>\n

    C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ed9 ng\u1eaft m\u1ed9t c\u1ef1c, b\u1ed9 ng\u1eaft m\u1ea1ch ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi m\u1ea1ch 120 volt v\u00e0 l\u00e0 lo\u1ea1i b\u1ed9 ng\u1eaft ph\u1ed5 bi\u1ebfn nh\u1ea5t trong b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c t\u1ea3i ph\u1ed5 bi\u1ebfn nh\u01b0 \u0111\u00e8n, \u1ed5 c\u1eafm v\u00e0 thi\u1ebft b\u1ecb nh\u1ecf.<\/p>\n

    K\u00edch th\u01b0\u1edbc<\/span>: 15A, 20A, 30A<\/p>\n

    Chi Ph\u00ed<\/span>: $5\u2013$20<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch hai c\u1ef1c<\/h3>\n

    B\u1ed9 ng\u1eaft hai c\u1ef1c \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c m\u1ea1ch 240 volt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c thi\u1ebft b\u1ecb l\u1edbn h\u01a1n nh\u01b0 b\u1ebfp \u0111i\u1ec7n, b\u00ecnh n\u00f3ng l\u1ea1nh v\u00e0 m\u00e1y \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed. B\u1ed9 ng\u1eaft hai c\u1ef1c chi\u1ebfm hai khe trong b\u1ea3ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n v\u00e0 mang d\u00f2ng \u0111i\u1ec7n g\u1ea5p \u0111\u00f4i so v\u1edbi b\u1ed9 ng\u1eaft m\u1ed9t c\u1ef1c.<\/p>\n

    K\u00edch th\u01b0\u1edbc<\/span>: 30A, 40A, 50A, 60A, 70A, 80A<\/p>\n

    Chi Ph\u00ed<\/span>: $10\u2013$30<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch ch\u1ed1ng r\u00f2 \u0111i\u1ec7n (GFCI)<\/h3>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch Ground Fault Circuit Interrupter (GFCI) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1 nh\u00e2n kh\u1ecfi \u0111i\u1ec7n gi\u1eadt \u1edf c\u00e1c khu v\u1ef1c \u1ea9m \u01b0\u1edbt. C\u00e1c v\u1ecb tr\u00ed \u0111i\u1ec3n h\u00ecnh cho b\u1ed9 ng\u1eaft m\u1ea1ch GFCI bao g\u1ed3m nh\u00e0 b\u1ebfp, ph\u00f2ng t\u1eafm v\u00e0 ngo\u00e0i tr\u1eddi. B\u1ed9 ng\u1eaft m\u1ea1ch GFCI s\u1ebd ng\u1eaft khi x\u1ea3y ra s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n gi\u1eefa d\u00e2y n\u00f3ng v\u00e0 d\u00e2y trung t\u00ednh.<\/p>\n

    K\u00edch th\u01b0\u1edbc<\/span>: 15A & 20A (\u0111\u01a1n c\u1ef1c), 30A & 40A (\u0111\u00f4i c\u1ef1c)<\/p>\n

    Chi Ph\u00ed<\/span>: $20\u2013$50<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch Arc Fault Circuit Interrupter (AFCI)<\/h3>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch Arc Fault Circuit Interrupter (AFCI) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u0103n ng\u1eeba ch\u00e1y do h\u1ed3 quang \u0111i\u1ec7n g\u00e2y ra. B\u1ed9 ng\u1eaft m\u1ea1ch l\u00e0 c\u1ea7n thi\u1ebft cho c\u00e1c d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng m\u1edbi trong ph\u00f2ng ng\u1ee7, ph\u00f2ng kh\u00e1ch v\u00e0 c\u00e1c khu v\u1ef1c kh\u00e1c c\u1ee7a nh\u00e0 \u1edf.<\/p>\n

    K\u00edch th\u01b0\u1edbc<\/span>: 15A, 20A (\u0111\u01a1n c\u1ef1c)<\/p>\n

    Chi Ph\u00ed<\/span>: $25\u2013$60<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch chuy\u00ean d\u1ee5ng<\/h3>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch bi\u1ebfn t\u1ea7n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/strong>: Thi\u1ebft k\u1ebf cho h\u1ec7 th\u1ed1ng pin m\u1eb7t tr\u1eddi v\u1edbi \u0111\u1ecbnh m\u1ee9c DC l\u00ean \u0111\u1ebfn 100A cho c\u00e1c m\u1ea1ch DC li\u00ean quan.<\/p>\n

    B\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u1ed9ng c\u01a1<\/strong>: B\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 kh\u1ecfi qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch v\u00e0 cung c\u1ea5p c\u00e1c c\u00e0i \u0111\u1eb7t ng\u1eaft c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n

    \"H\u01b0\u1edbng<\/p>\n

    H\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc cho b\u1ed9 ng\u1eaft m\u1ea1ch tr\u00ean thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng ph\u1ed5 bi\u1ebfn<\/h2>\n

    D\u01b0\u1edbi \u0111\u00e2y l\u00e0 tham kh\u1ea3o nhanh v\u1ec1 k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch khi k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
    Thi\u1ebft b\u1ecb\/H\u1ec7 th\u1ed1ng<\/th>\nC\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c<\/th>\n\u1ee8ng d\u1ee5ng ch\u00ednh<\/th>\nD\u00f2ng \u0111i\u1ec7n t\u00ednh to\u00e1n<\/th>\nK\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u1ec1 xu\u1ea5t<\/th>\nK\u00edch th\u01b0\u1edbc D\u00e2y<\/th>\n<\/tr>\n<\/thead>\n
    T\u1ee7 l\u1ea1nh<\/td>\n1000W<\/td>\n120V<\/td>\n3A<\/td>\n15A<\/td>\nD\u00e2y 14-gauge<\/td>\n<\/tr>\n
    M\u00e1y \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed (1.5 t\u1ea5n)<\/td>\n5000W<\/td>\n240V<\/td>\n8A<\/td>\n30A<\/td>\n10-gauge<\/td>\n<\/tr>\n
    M\u00e1y n\u01b0\u1edbc n\u00f3ng \u0111i\u1ec7n<\/td>\n4500W<\/td>\n240V<\/td>\n75A<\/td>\n30A<\/td>\n10-gauge<\/td>\n<\/tr>\n
    B\u1ebfp \u0111i\u1ec7n<\/td>\n8000W<\/td>\n240V<\/td>\n3A<\/td>\n50A<\/td>\n6-gauge<\/td>\n<\/tr>\n
    B\u1ed9 bi\u1ebfn t\u1ea7n 2000W<\/td>\n2000W<\/td>\n120V<\/td>\n7A<\/td>\n20A<\/td>\n12-gauge<\/td>\n<\/tr>\n
    B\u1ed9 bi\u1ebfn t\u1ea7n 3000W<\/td>\n3000W<\/td>\n120V<\/td>\n25A<\/td>\n30A<\/td>\n10-gauge<\/td>\n<\/tr>\n
    H\u1ec7 th\u1ed1ng pin n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi (5kW)<\/td>\n5000W<\/td>\n240V<\/td>\n8A<\/td>\n30A<\/td>\n10-gauge<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    M\u1eb9o l\u1eafp \u0111\u1eb7t & b\u1ea3o tr\u00ec c\u1ea7u dao<\/h2>\n

    Vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch s\u1ebd gi\u1eef cho c\u1ea7u dao ho\u1ea1t \u0111\u1ed9ng nh\u01b0 d\u1ef1 \u0111\u1ecbnh:<\/p>\n

    T\u01b0\u01a1ng th\u00edch b\u1ea3ng \u0111i\u1ec7n<\/span>: \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u1ea7u dao b\u1ea1n mua \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi b\u1ea3ng \u0111i\u1ec7n ch\u00ednh c\u1ee7a b\u1ea1n l\u00e0 t\u1eeb c\u00f9ng m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t (v\u00ed d\u1ee5: c\u1ea7u dao GE n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1ea3ng GE, v\u00e0 c\u1ea7u dao Siemens trong b\u1ea3ng Siemens) v\u00ec vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea7u dao t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ea3ng c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea3y c\u1ea7u ho\u1eb7c h\u01b0 h\u1ecfng b\u1ea3ng \u0111i\u1ec7n ch\u00ednh c\u1ee7a b\u1ea1n.<\/p>\n

    Kh\u00f4ng qu\u00e1 t\u1ea3i b\u1ea3ng \u0111i\u1ec7n<\/span>: \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea7u dao ch\u00ednh c\u1ee7a b\u1ea1n c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p \u0111\u1ec3 x\u1eed l\u00fd t\u1ed5ng t\u1ea3i \u0111i\u1ec7n trong nh\u00e0 b\u1ea1n. (M\u1ed9t c\u1ea7u dao ch\u00ednh 200 amp th\u01b0\u1eddng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho b\u1ea5t k\u1ef3 ng\u00f4i nh\u00e0 m\u1edbi n\u00e0o \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng ng\u00e0y nay c\u00f3 nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0\/ho\u1eb7c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c nhau trong nh\u00e0.)<\/p>\n

    Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra c\u1ea7u dao<\/span>: Nh\u1ea5n n\u00fat \u201ctest\u201d tr\u00ean b\u1ea5t k\u1ef3 c\u1ea7u dao GFCI\/AFCI n\u00e0o m\u1ed7i 3\u20136 th\u00e1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u1ea7u dao ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang b\u1eb1ng c\u00e1ch nh\u1ea3y c\u1ea7u.<\/p>\n

    Thay th\u1ebf c\u1ea7u dao b\u1ecb l\u1ed7i<\/span>: N\u1ebfu c\u1ea7u dao th\u01b0\u1eddng xuy\u00ean nh\u1ea3y, c\u1ea3m th\u1ea5y n\u00f3ng khi ch\u1ea1m v\u00e0o ho\u1eb7c ph\u00e1t ra ti\u1ebfng vo ve, th\u00ec n\u00f3 \u0111\u00e3 h\u1ecfng v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c thay th\u1ebf. B\u1ea1n kh\u00f4ng n\u00ean thay c\u1ea7u dao b\u1eb1ng lo\u1ea1i c\u00f3 \u0111\u1ecbnh m\u1ee9c l\u1edbn h\u01a1n v\u00ec c\u00f3 th\u1ec3 l\u00e0m d\u00e2y d\u1eabn qu\u00e1 nhi\u1ec7t.<\/p>\n

    C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p: C\u00e1c c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn v\u1ec1 c\u1ea7u dao<\/h2>\n

    Nh\u00e0 n\u00ean c\u00f3 d\u1ecbch v\u1ee5 100 amp hay 200 amp?<\/h3>\n

    D\u1ecbch v\u1ee5 200 amp \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho c\u00e1c ng\u00f4i nh\u00e0 hi\u1ec7n \u0111\u1ea1i c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb l\u1edbn (b\u1ebfp \u0111i\u1ec7n, m\u00e1y n\u01b0\u1edbc n\u00f3ng, \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed), pin n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ho\u1eb7c b\u1ed9 s\u1ea1c xe \u0111i\u1ec7n. D\u1ecbch v\u1ee5 100 amp c\u00f3 th\u1ec3 \u0111\u1ee7 cho c\u00e1c ng\u00f4i nh\u00e0 nh\u1ecf h\u01a1n v\u1edbi \u00edt thi\u1ebft b\u1ecb h\u01a1n, nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i n\u1ebfu b\u1ea1n th\u00eam thi\u1ebft b\u1ecb m\u1edbi.<\/p>\n

    T\u00f4i c\u00f3 th\u1ec3 ch\u1ea1y m\u00e1y s\u1ea5y 30 amp tr\u00ean c\u1ea7u dao 40 amp kh\u00f4ng?<\/h3>\n

    C\u00f3, nh\u01b0ng b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng d\u00e2y 10-gauge \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c cho 30 amp. C\u1ea7u dao 40 amp cung c\u1ea5p c\u00f4ng su\u1ea5t d\u01b0 th\u1eeba, nh\u01b0ng k\u00edch th\u01b0\u1edbc d\u00e2y ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ecbnh m\u1ee9c 30 amp c\u1ee7a m\u00e1y s\u1ea5y \u0111\u1ec3 tr\u00e1nh qu\u00e1 nhi\u1ec7t. Tuy nhi\u00ean, t\u1ed1t nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng c\u1ea7u dao 30 amp cho t\u1ea3i 30 amp \u0111\u1ec3 tu\u00e2n th\u1ee7 quy t\u1eafc 80%.<\/p>\n

    Nh\u1eefng c\u1ea7u dao n\u00e0o ho\u1ea1t \u0111\u1ed9ng trong b\u1ea3ng GE?<\/h3>\n

    B\u1ea3ng GE t\u01b0\u01a1ng th\u00edch v\u1edbi c\u1ea7u dao mang th\u01b0\u01a1ng hi\u1ec7u GE, bao g\u1ed3m c\u00e1c d\u00f2ng Q-line, THQL v\u00e0 HQ. M\u1ed9t s\u1ed1 c\u1ea7u dao b\u00ean th\u1ee9 ba (v\u00ed d\u1ee5: Square D Homeline) c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng, nh\u01b0ng GE khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng c\u1ea7u dao c\u1ee7a h\u1ecd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 t\u01b0\u01a1ng th\u00edch.<\/p>\n

    C\u00f3 th\u1ec3 ch\u1ea1y c\u1ea7u dao 50 amp tr\u00ean b\u1ea3ng 100 amp kh\u00f4ng?<\/h3>\n

    C\u00f3, mi\u1ec5n l\u00e0 t\u1ed5ng t\u1ea3i tr\u00ean b\u1ea3ng kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 100 amp. T\u00ednh t\u1ed5ng c\u00f4ng su\u1ea5t \u0111i\u1ec7n c\u1ee7a nh\u00e0 b\u1ea1n v\u00e0 \u0111\u1ea3m b\u1ea3o t\u1ed5ng c\u00e1c c\u1ea7u dao kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 \u0111\u1ecbnh m\u1ee9c c\u1ee7a b\u1ea3ng (m\u1eb7c d\u00f9 b\u00ecnh th\u01b0\u1eddng t\u1ed5ng c\u00e1c c\u1ea7u dao c\u00f3 th\u1ec3 l\u1edbn h\u01a1n \u0111\u1ecbnh m\u1ee9c b\u1ea3ng v\u00ec kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 t\u1ea3i \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng c\u00f9ng l\u00fac).<\/p>\n

    T\u00f4i c\u1ea7n c\u1ea7u dao k\u00edch th\u01b0\u1edbc n\u00e0o cho \u1ed5 c\u1eafm 240 volt?<\/h3>\n

    K\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch ph\u1ee5 thu\u1ed9c v\u00e0o c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a \u1ed5 c\u1eafm. M\u1ed9t \u1ed5 c\u1eafm 240V cho m\u00e1y s\u1ea5y \u0111i\u1ec7n s\u1eed d\u1ee5ng b\u1ed9 ng\u1eaft m\u1ea1ch 30 amp, trong khi \u1ed5 c\u1eafm cho b\u1ebfp \u0111i\u1ec7n s\u1eed d\u1ee5ng b\u1ed9 ng\u1eaft m\u1ea1ch 50 amp. Ph\u00f9 h\u1ee3p k\u00edch th\u01b0\u1edbc b\u1ed9 ng\u1eaft m\u1ea1ch v\u1edbi c\u00f4ng su\u1ea5t amp c\u1ee7a \u1ed5 c\u1eafm.<\/p>\n

    L\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p c\u1ea7u dao<\/strong> l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng trong b\u1ea5t k\u1ef3 l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n n\u00e0o, d\u00f9 b\u1ea1n \u0111ang n\u00e2ng c\u1ea5p d\u1ecbch v\u1ee5 \u0111i\u1ec7n cho nh\u00e0 ho\u1eb7c th\u00eam thi\u1ebft b\u1ecb m\u1edbi. B\u1eb1ng c\u00e1ch t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n t\u1ea3i, \u00e1p d\u1ee5ng quy t\u1eafc 80%, v\u00e0 ch\u1ecdn lo\u1ea1i b\u1ed9 ng\u1eaft m\u1ea1ch ph\u00f9 h\u1ee3p (GFCI, AFCI, hai c\u1ef1c), b\u1ea1n \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a m\u00ecnh an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 nh\u01b0 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, b\u1ed9 bi\u1ebfn t\u1ea7n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, ho\u1eb7c b\u1ebfp \u0111i\u1ec7n, h\u00e3y tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 ph\u00f9 h\u1ee3p b\u1ed9 ng\u1eaft m\u1ea1ch v\u1edbi y\u00eau c\u1ea7u t\u1ea3i. Lu\u00f4n l\u00e0m vi\u1ec7c v\u1edbi th\u1ee3 \u0111i\u1ec7n c\u00f3 gi\u1ea5y ph\u00e9p n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 k\u00edch th\u01b0\u1edbc ho\u1eb7c l\u1eafp \u0111\u1eb7t b\u1ed9 ng\u1eaft m\u1ea1ch, v\u00e0 nh\u1edb ki\u1ec3m tra b\u1ed9 ng\u1eaft m\u1ea1ch th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 ng\u0103n ng\u1eeba ch\u00e1y n\u1ed5 v\u00e0 h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb. V\u1edbi b\u1ed9 ng\u1eaft m\u1ea1ch ph\u00f9 h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 cung c\u1ea5p \u0111i\u1ec7n cho nh\u00e0 ho\u1eb7c doanh nghi\u1ec7p m\u1ed9t c\u00e1ch t\u1ef1 tin.<\/p>","protected":false},"excerpt":{"rendered":"

    Getting the correct size circuit breaker is vital in keeping your electrical system safe and avoiding any accidents such as sparks when electricity is flowing through your appliances. If you buy an air conditioner, solar panel, or even an electric stove, it\u2019s important you choose a breaker that can accommodate what your appliance draws from […]<\/p>\n","protected":false},"author":1,"featured_media":1964,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1963","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/1963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/comments?post=1963"}],"version-history":[{"count":2,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/1963\/revisions"}],"predecessor-version":[{"id":1968,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/1963\/revisions\/1968"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/1964"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=1963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=1963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=1963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}