{"id":19643,"date":"2025-11-11T10:59:20","date_gmt":"2025-11-11T02:59:20","guid":{"rendered":"https:\/\/viox.com\/?p=19643"},"modified":"2025-11-11T10:59:21","modified_gmt":"2025-11-11T02:59:21","slug":"neutral-bar-shock-safety","status":"publish","type":"post","link":"https:\/\/test.viox.com\/ja\/neutral-bar-shock-safety\/","title":{"rendered":"\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u306f\u306a\u305c\u4e2d\u6027\u30d6\u30b9\u30d0\u30fc\u30b7\u30e7\u30c3\u30af\u3067\u3059\u3002 (\u3068\u304d\u306b\u306f\u7d76\u5bfe\u306b\u306a\u308a\u307e\u3059)"},"content":{"rendered":"<div class=\"product-intro\">\n<article><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-19650\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You.webp\" alt=\"Neutral Bus Bar Shock You\" width=\"800\" height=\"709\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You-300x266.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You-768x681.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You-14x12.webp 14w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Neutral-Bus-Bar-Shock-You-600x532.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>\u3044\u306b\u7acb\u3063\u3066\u3054\u968e\u81ea\u5206\u306e\u96fb\u6c17\u5de5\u4e8b\u58eb\u3002 \u672c\u30d1\u30cd\u30eb\u306f\u3001\u901a\u96fb200\u30a2\u30f3\u30da\u30a2\u306e\u6b7b\u3060\u3051\u3067\u30a4\u30f3\u30c1\u306e\u8ddd\u96e2\u3067\u3059\u3002 \u6c0f\u306b\u5f7c\u306e\u624b\u3092\u3084\u30d8\u306e\u30d0\u30b9\u30d0\u30fc\u304c\u3042\u308a\u307e\u3059\u3002 \u5fc3\u505c\u6b62\u3057\u307e\u3059\u3002 \u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u3066\u3082\u5c3b\u8fbc\u307f. 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<strong>\u3053\u306e\u96fb\u6c17\u7684\u306a\u63a5\u7d9a\u306f\u3055\u307e\u306e\u7acb\u3061\u307e\u3059\u3002<\/strong> \u6587\u5b57\u901a\u308a. \u30b5\u30fc\u30d3\u30b9\"\u5165\u5b66\u2014\u96fb\u529b\u304c\u5165\u3063\u305f\u5bb6\u5ead\u306e\u4e2d\u6027\u5c0e\u4f53\u304c\u7d50\u5408\u3057\u305f\u63a5\u7d9a\u306e\u63a5\u5730\u96fb\u6975\u30b7\u30b9\u30c6\u30e0\u3002 \u3053\u306e\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u306b\u63a5\u7d9a\u3092\u901a\u3058\u3066\u3001\u5730\u7403\u306e\u5730\u68d2\u3001\u91d1\u5c5e\u6c34\u9053\u7ba1\u3001\u307e\u305f\u306f\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u6b6a\u3092\u5370\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3060\u304c\u7acb\u3063\u3066\u540c\u3058\u3002<\/p>\n<p>\u3053\u306e\u3046\u3061\u96fb\u8a71 <strong>\"\u30bc\u30ed-\u30dc\u30eb\u30c8\u30be\u30fc\u30f3\"<\/strong>\u2014an equipotential\u9762\u306e\u30cb\u30d0\u30fc\u3001\u30b3\u30eb\u30b2\u30fc\u30c8\u30c1\u30e5\u30fc\u30d6\uff08\u4fdd\u7a0e\uff09\u3001\u91d1\u5c5e\u30d1\u30cd\u30eb\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u3088\u308a\u3001\u5730\u4e0b\u306b\u8db3\u3092\u96fb\u6c17\u7684\u307e\u3059\u3002 \u7121\u96fb\u5727\u5dee\u304c\u306a\u3044\u73fe\u5728\u306e\u30d5\u30ed\u30fc\u3067\u3059\u3002<\/p>\n<p>\u601d\u3044\u96fb\u4f4d\u306e\u3088\u3046\u306a\u308b\u3002 \u3060\u304c\u7acb\u3063\u3066\u5e73\u5766\u306a\u8868\u9762\u304c\u5b8c\u5168\u306b\u30ec\u30d9\u30eb\u306e\u5e8a\u304c\"\u30c0\u30a6\u30f3\u30d2\u30eb\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u304a\u4f7f\u3044\u304f\u3060\u3055\u3044\u79cb......\u3002 \u6c34\u306e\u306a\u3044\u7269\u306b\u306a\u30ed\u30fc\u30eb\u3067\u304d\u306a\u3044\u8d77\u304d\u4e0a\u304c\u308a\u307e\u3059\u3002 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\u4e2d\u6027\u30d6\u30b9\u30d0\u30fc\u306f\u5b89\u5168\u306a\u30bf\u30c3\u30c1\u3067\u7740\u5730\u3067\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u308a\u53e3\u3092\u30bc\u30ed\u96fb\u4f4d\u5dee\u3068\u306e\u9593\u3067\u3001\u30d0\u30fc\u3001\u4e0b\u306b\u8db3\u3092\u53d6\u3089\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002 \u3053\u306e\u7d50\u5408\u304c\u4e00\u6642\u306e\u307f\u306e\u30b5\u30fc\u30d3\u30b9\u5207\u65ad)\u306a\u306e\u3067subpanels\u3001NEC\u7b2c250.24(A)(5)\u53ca\u3073IEC60364-5-54.<\/p><\/blockquote>\n<p>\u304c\u3053\u3067\u8208\u5473\u6df1\u3044\u3053\u3068\u304c\u3042\u308a\u6d41\u308c\u308b\u96fb\u6d41\u306b\u3088\u308b\u30cb\u30d0\u30fc\u304c\u3042\u308a\u307e\u3059\u3002 \u6642\u306b\u306f\u5927\u96fb\u6d41\u201415\u30a2\u30f3\u30d7\u306e30\u30da\u30a2\u30f3\u30d7\u3067\u3082\u300150+\u30a2\u30f3\u30d7\u306b\u306f\u30e1\u30a4\u30f3\u30d1\u30cd\u30eb\u306e\u4e2d\u6027\u30d0\u30b9\u306b\u306a\u308a\u307e\u3059\u3002 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<strong>\u3067\u5b8c\u5168\u306b\u9593\u9055\u3063\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n<p>\u305d\u3046\u3067\u306f\u306a\u3044\u3002 \u3053\u306e\u6280\u8853\u306e\u771f\u306e\u610f\u5473\u3067\u3053\u306e\u5ddd\"\u3067\u306e\u9053\u62b5\u6297\u306e\u5c11\u306a\u304f\u3068\u3082\"\u304b\u3089\u30c0\u30a6\u30f3\u30c1\u304c\u5ddd\u306e\u3088\u3046\u306b\u3001\u96fb\u529b\u306a\u5236\u9650\u3092\u4e00\u3064\u3060\u3051\u307e\u3059\u3002 \u96fb\u6c17\u304b <strong>\u3059\u3079\u3066\u306e\u30d1\u30b9<\/strong> \u305d\u306e\u30bd\u30fc\u30b9\u306b\u5206\u5272\u3057\u3001\u73fe\u5728\u306e\u305d\u308c\u305e\u308c\u306e\u30d1\u30b9\u306b\u6bd4\u4f8b\u3059\u308b\u30d1\u30b9\u306e\u30b3\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u306e\u9006\u306e\u306f\u3042\u308a\u307e\u305b\u3093\u3002 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100,000\u30aa\u30fc\u30e0\u306e\u3088\u3046\u306b\u6c57\u3070\u3093\u3060\u624b\u306f\u3001\u3069\u306e\u3088\u3046\u306b\u826f\u3044\u30d6\u30fc\u30c4\u3002 \u3082\u3046\u5c11\u3057\u4fdd\u5b88\u7684\u3068\u8a0010,000ohms.<\/p>\n<p>\u3053\u306e\u91cd\u8981\u306a\u6d1e\u5bdf: <strong>\u73fe\u5728\u306e\u5206\u96e2\u306b\u53cd\u6bd4\u4f8b\u3057\u307e\u3059\u3002<\/strong> 10AWG\u30ef\u30a4\u30e4\u306e1\/200,000\u56de\u306e\u62b5\u6297\u4f53(0.05\u03a9 vs10,000\u03a9)\u306f\u3001\u30ef\u30a4\u30e4\u30fc\u3092200,000\u56de\u3088\u308a\u8eab\u4f53\u307e\u3059\u3002 \u5834\u5408\u306f20\u30da\u30a2\u30f3\u30d7\u304c\u6d41\u308c\u308b\u4e2d\u6027\u4f53\u304c\u7d040.0001\u30a2\u30f3\u30d7\u20140.1milliamps. \u3053\u306e\u3088\u3046\u4e07\u308b\u3002 \u3044\u307e\u3059\u3002 \u30ef\u30a4\u30e4\u30fc\u3092\u53d6\u5f97\u305719.9999\u30da\u30a2\u30f3\u30d7\u30010.0001\u30a2\u30f3\u30d7. \u4e21\u65b9\u306e\u30d1\u30b9\u3092\u73fe\u5728\u306e\u3001\u305d\u306e\u5dee\u306f\u6975\u7aef\u306a\u3053\u3068\u3092\u304a\u77e5\u899a\u3068\u3057\u3066\u3082\u9053\u3092\"\u306a\u3057\u3002\"<\/p>\n<blockquote><p><strong>Pro\u30c1\u30c3\u30d7#2:<\/strong> \u96fb\u6c17\u304c\u306a\u3044\"\u3092\u9078\u629e\"\u306e\u30ef\u30a4\u30e4\u306b\u6e21\u3059\u306e\u3067\u3059\u3079\u3066\u306e\u30d1\u30b9\u6bd4\u4f8b. \u5f97\u3089\u308c\u306a\u3044\u3068\u304d\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u885d\u6483\u3092\u53d7\u3051\u306a\u306e\u3067\u304a\u8eab\u4f53\u306e\u62b5\u6297\u529b\u306f\u7686\u7121\u3067\u3042\u3063\u305f.\u305d\u3053\u3067\u3053\u306e\u96fb\u6d41\u3092\u6e2c\u5b9amicroamps\u3067\u306f\u306a\u304f\u3001\u5371\u967a\u306amilliamps\u306e\u539f\u56e0\u3068\u306a\u308b\u5fc3\u5ba4\u7d30\u52d5(30-50mA\u3001\u80f8).<\/p><\/blockquote>\n<p>\u305d\u306e\u305f\u3081\u3001\"\u7d4c\u8def\u306e\u5c11\u306a\u304f\u3068\u3082\u62b5\u6297\"\u795e\u8a71\u304c\u3044\u304b\u306b\u5371\u967a\u306a\u3053\u3068\u3068\u601d\u3063\u3066\u3044\u308b\u4eba\u304c\u591a\u3044\u3088\u3046\u3060\u304c\u3001\u4f4e\u62b5\u6297\u3001\u5f7c\u3089\u306f\u5b8c\u5168\u306b\u5b89\u5168\u3067\u3059\u3002 \u5f7c\u3089\u306f\u5b89\u5168\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u2014\u5f7c\u3089\u306f\u3001\u3088\u308a\u5b89\u5168\u306f\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002 \u4e86\u3059\u308c\u3070\u56de\u8def\u306e\u80f8\u306b\u6fe1\u308c\u305f\u624b\u3067\u3001\u6545\u969c\u6a5f\u5668\u3067\u3082\"\u3088\u3044\"\u3068\u3044\u3046\u7d4c\u8def\u3092\u901a\u3058\u3066\u3001\u5341\u5206\u306a\u96fb\u6d41\u304c\u6d41\u308c\u3088\u308a\u5fc3\u505c\u6b62\u3057\u307e\u3059\u3002 \u306e\u795e\u8a71\u3092\u6bba\u3067\u4eba\u6c17\u8efd\u306b\u3002<\/p>\n<h2>\u306e\u96fb\u5727\u30c9\u30ed\u30c3\u30d7\u30b4\u30fc\u30b9\u30c8\uff1a\u306a\u305c\u3042\u306e\u96fb\u5727\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u5fa1\u4e86\u627f\u304f\u3060\u3055\u3044\u306a\u611f\u3058\u3067)<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19647\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic.webp\" alt=\"Neutral conductor voltage drop calculation showing 0.09 volts across 3 feet of 12 AWG copper wire carrying 15 amps in electrical panel\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Voltage-Drop-Calculation-Infographic-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>\u4eca\u307e\u3057\u3087\u3046\u4f4f\u6240\u306b\u3068\u3063\u3066\u3001\u6280\u8853\u7684\u306a\u8b70\u8ad6\u304c\u660e\u3089\u304b\u3068\u306a\u3063\u305f\u3002 <strong>\u304c\u5b9f\u969b\u306b\u306f\u5c0f\u3055\u306a\u96fb\u5727\u5dee\u3059\u308b\u305f\u3081\u306b\u3001\u4e2d\u6027\u30d0\u30b9-\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30ba\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3002<\/strong> \u307e\u3059 <strong>\"\u306e\u96fb\u5727\u30c9\u30ed\u30c3\u30d7\u30b4\u30fc\u30b9\u30c8\"<\/strong>\u3067\u3042\u308a\u3001\u6e2c\u5b9a\u53ef\u80fd\u3068\u30de\u30eb\u30c1\u30e1\u30fc\u30bf\u304c\u53ef\u80fd\u3067\u3042\u308a\u3001\u3053\u308c\u307e\u3067\u306e\u3088\u3046\u306a\u3042\u306a\u305f\u3092\u50b7\u3064\u3051\u308b\u3002<\/p>\n<p>\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u306e\u3067\u5b58\u5728\u3059\u308b\u5168\u3066\u306e\u5c0e\u62b5\u6297\u3067\u9285\u30d6\u30b9\u30d0\u30fc\u3001\u30b2\u30fc\u30b8\u7dda\u3068\u3057\u3066\u3044\u307e\u3059\u3002 \u6642\u306b\u96fb\u6d41\u304c\u6d41\u308c\u62b5\u6297\u306e\u96fb\u5727\u306f\u4e0b\u304c\u308a\u307e\u3059\u3002 \u3092\u6c42\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3067\u306f\u73fe\u5b9f\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u3002<\/p>\n<p>\u3053\u306e100\u30d5\u30e9\u306e12AWG\u9285\u4e2d\u6027\u7dda\u309215\u30da\u30a2\u30f3\u30d7\u306e\u30d1\u30cd\u30eb\u304b\u3089\u30ed\u30fc\u30c9\u56de\u8def\uff08ten100\u30ef\u30c3\u30c8\u306e\u767d\u71b1\u96fb\u7403\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9). \u306e\u62b5\u629712AWG\u928575\u2103\u3067\u7d042.01\u30aa\u30fc\u30e01,000\u4eba\u5f53\u305f\u308a\u8db30.201\u30aa\u30fc\u30e0100\u307e\u3059\u3002 \u7528\u30aa\u30fc\u30e0\u306e\u6cd5\u5247\uff08V=I\u00d7R) <strong>V=15A\u00d70.201\u03a9=3.02\u30dc\u30eb\u30c8<\/strong>. \u3053\u3068\u306b\u306a\u308b\u306e\u7dcf\u96fb\u5727\u964d\u4e0b\u5168\u4f53100-\u8db3\u7acb\u3002<\/p>\n<p>\u73fe\u5728\u306e\u8996\u70b9\u304b\u3089\u306e3\u8db3\u306e\u4e2d\u6027\u7dda\u306e\u5185\u5074\u306e\u30d1\u30cd\u30eb\u304b\u3089\u5165\u529b\u3067\u7d42\u4e86\u3057\u3001\u30d0\u30b9\u30d0\u30fc\u304c\u3042\u308a\u307e\u3059\u3002 \u306e\u96fb\u5727\u30c9\u30ed\u30c3\u30d7\u305d\u306e3\u3002 3feet\/100\u30d5\u30a3\u30fc\u30c8\u00d73.02V= <strong>0.09\u30dc\u30eb\u30c8<\/strong>. \u5834\u5408\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u304d\u305f\u4e2d\u6027\u7dda\u306b\u3088\u308a\u76f4\u63a5\u5165\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306e\u3067\u30d1\u30cd\u30eb\u3092\u7247\u624b\u306b\u3001\u4e2d\u6027\u30d6\u30b9\u30d0\u30fc\u3068\u3001\u30420.09\u578b\u306e\u30bf\u30fc\u30dc\u30c1\u30e3\u30fc\u30b8\u30e3\u30fc\u3092\u5dee\u3042\u306a\u305f\u306e\u624b\u306b\u4efb\u305b\u307e\u3059\u3002 \u3053\u3068\u306b\u306a\u308b90millivolts.<\/p>\n<p>\u3053\u306e\u8996\u70b9\uff1aAA\u96fb\u6c601.5v\u2014\u7d0417\u500d\u306e\u96fb\u5727\u3088\u308a\u307e\u3059\u3002 \u3067\u304d\u308b\u3060AA\u96fb\u6c60\u304a\u808c\u306e\u4e7e\u71e5? No. \u3044\u3044\u305f\u3057\u307e\u30590.09\u30dc\u30eb\u30c8\u3067\u3059\u3002 \u304a\u808c\u3092\u3059\u308b\u884c\u70ba\u3092\u7d76\u7e01\u4f53\u3068\u3057\u3066\u3001\u611f\u899a\u95be\u5024\u7d04\u306e30-50\u30dc\u30eb\u30c8\u4e7e\u71e5\u76ae\u819a\u304b\u306a\u308a\u4f4e\u3044\u5834\u5408\u306b\u6fe1\u308c\u2014\u4e0b10-20\u30dc\u30eb\u30c8\u306e\u71b1\u3044\u307e\u3059\u3002 \u4ee5\u4e0b\u306b\u305d\u306e\u95be\u5024\u306b\u3088\u308a\u3001\u6d41\u52d5\u6d78\u900f\u3057\u304a\u808c\u306e\u5916\u5c64\u3067\u3042\u308b\u3002<\/p>\n<p>\u307e\u305f\u3001\u611f\u5ea6\u306e\u9ad8\u5727\u5b89\u5b9a\u306b\u5341\u5206\u306a\u624b\u3067\u304d\u5730\u56f3\u306e\u96fb\u5727\u52fe\u914d\u3092\u6a2a\u65ad\u3059\u308b\u30d0\u30b9\u30d0\u30fc\u306e\u3088\u3046\u306b\u5730\u5f62\u56f3\u3002 \u3067\u3082\u6700\u9ad8\u5cf0\"\u306a\u5341\u5206\u306a\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u305d\u306e\u305f\u3081\u3001 <strong>\u96fb\u5727\u30c9\u30ed\u30c3\u30d7\u30b4\u30fc\u30b9\u30c8<\/strong> \u51e1\u304a\u30cb\u30d0\u30fc\u304c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<blockquote><p><strong>Pro\u30c1\u30c3\u30d7#3:<\/strong> \u3042\u96fb\u5727\u305d\u306e\u4e2d\u306e\u30d0\u30fc\u306f\u3001\u901a\u5e380.02-0.10V\u4e21\u8db3\u306e\u7dda\u306e\u4e0b\u3067\u306e\u8ca0\u8377\u3067\u306e30-50V\u3092\u4e57\u308a\u8d8a\u3048\u308b\u305f\u3081\u304a\u808c\u306e\u4e7e\u71e5\u306e\u8010\u4e45\u6027\u3067\u3059\u3002 \u3053\u306e\u5730\u7d61\u56de\u8def\u906e\u65ad\u5668(GFCIs)\u304b\u3089\u901a\u5e38\u306e\u4e2d\u306e\u96fb\u5727\u964d\u4e0b\u3092\u3044\u3044\u76e3\u8996\u306e\u4e0d\u5747\u8861\u96fb\u6d415mA\u4ee5\u4e0a\uff09\u306e\u96fb\u5727\u306b\u306a\u308a\u307e\u3059\u3002<\/p><\/blockquote>\n<p>\u3053\u308c\u307e\u3067\u3082\u305d\u3046\u5b89\u5168\u3067\u3059\u3002 \u4e2d\u7acb\u306e\u30d0\u30fc\u306f\u4fdd\u7a0e\u5730\u3001\u30bc\u30ed\u30dc\u30eb\u30c8\u3002 \u8eab\u4f53\u306e\u9ad8\u62b5\u6297\u624b\u6bb5\u306f\u307b\u3068\u3093\u3069\u6d41\u901a\u3057\u307e\u3059\u3002 \u306e\u5c0f\u3055\u306a\u96fb\u5727\u964d\u4e0b\u306b\u5b58\u5728\u3059\u308b\u306f\u6368\u3066\u3066\u304f\u3060\u3055\u3044\u3002. \u4eca\u3067\u306f\u30b7\u30ca\u30ea\u30aa\u3092\u7b56\u5b9a\u3059\u308b\u3053\u3068\u6bba\u4eba\u3067\u3059\u3002<\/p>\n<h2>\u306e\u4e2d\u6027\u30ad\u30e9\u30fc\uff1a\u3053\u306e\"\u5b89\u5168\"\u30ef\u30a4\u30e4\u304c\u5927<\/h2>\n<p>\u304b\u3089\u306e\u5206\u96e2\u65e5\u5e38\u306e\u96fb\u6c17\u5de5\u4e8b\u304b\u3089\u6b7b\u4ea1\u4e8b\u6545: <strong>\u6587\u8108<\/strong>. \u30bf\u30c3\u30c1\u30cb\u30fc\u30d0\u30fc\u306e\u9069\u5207\u306a\u7d50\u5408\u30d1\u30cd\u30eb\u304c\u7acb\u3061\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u3067\u3057\u3087\u3046\u304b\u3002 \u5b89\u5168\u3067\u3059\u3002 \u30bf\u30c3\u30c1\u30cb\u30ef\u30a4\u30e4\u30fc\u306e\u958b\u8a2d\u306e\u4e0a\u6d41\u4e0b\u3067\u3059\u3002 \u3044\u307e\u3059\u3002 \u306b\u3064\u3044\u3066\u8aac\u660e\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u304c <strong>\u306e\u4e2d\u6027\u30ad\u30e9\u30fc<\/strong> \u8d77\u3053\u3063\u305f\u3002<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19649\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart.webp\" alt=\"Open neutral hazard flowchart showing how neutral conductor voltage rises from 0V to 120V when connection opens under load creating electric shock danger\" width=\"800\" height=\"665\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart-300x249.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart-768x638.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart-14x12.webp 14w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/open-neutral-failure-mode-flowchart-600x499.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa1\uff1a\u3086\u3063\u305f\u308a\u63a5\u7d9a\u8377\u91cd\u4e0b\u306b\u304a\u3051\u308b<\/h3>\n<p>\u304a\u6d17\u6fef\u6a5f-\u4e7e\u71e5\u6a5f-\u96fb\u6c17\u6e29\u6c34\u5668\u306f\u3059\u3079\u3066\u30e9\u30f3\u30cb\u30f3\u30b0\u3001\u5f15\u3063\u5f35\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u304b35\u30da\u30a2\u30f3\u30d7\u3068\u5171\u306b\u4e2d\u7acb\u3092\u8fd4\u3057\u307e\u3059\u3002 \u3069\u3053\u304b\u306b\u6d41\u308c\u306a\u3044\u304b\u3082\u3057\u308c\u3067\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u30dc\u30c3\u30af\u30b9\u306e\u306a\u304b\u306b\u306f\u3001\u30d6\u30ec\u30fc\u30ab\u30fc\u7aef\u5b50\u306f\u3001\u305d\u306e\u56fd\u306e\u30d1\u30cd\u30eb\u306e\u30cb\u30d0\u30fc\u672c\u4f53\u3068\u63a5\u7d9a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3067\u3086\u3063\u305f\u308a\u6570\u30f6\u6708\u306b\u3001\u3086\u3063\u304f\u308a\u52a0\u71b1\u3001\u9178\u5316\u6027\u3001\u9ad8\u8010\u4e45\u6027\u3067\u3059\u3002 \u3042\u308b\u65e5\u3001\u305d\u306e\u63a5\u7d9a\u3092\u958b\u8a2d\u3002 \u56de\u8def\u304c\u58ca\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f\u3001\u91cd\u8981\u306a\u90e8\u5206: <strong>\u4e2d\u6027\u5c0e\u4f53\u306b\u8ca0\u8377\u5074\u306e\u4f11\u61a9\u304c\u3067\u30d5\u30eb\u30e9\u30a4\u30f3\u96fb\u5727\u306b\u306a\u308a\u307e\u3059\u3002<\/strong> \u306a\u305c\u3067\u3059\u304b\uff1f \u3067\u96fb\u6d41\u304c\u6d41\u308c\u304b\u3089\u306e\u9ad8\u6e29\u5074\u306e\u6a5f\u5668\u3092\u901a\u3058\u3066\u8377\u91cd\u4e0b\u306e\u4e2d\u6027\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5f62\u6210\u3057\u3092\u3059\u308b\u3053\u3068\u306f\u3068\u3066\u3082\u3067\u304d\u307e\u305b\u3093\u306e\u3067\u3042\u308a\u307e\u3059\u3002 \u306e\u6a5f\u5668\u3068\u306a\u308b\u96fb\u5727\u5206\u5727\u5668\u306e\u4e2d\u6027\u7dda\u306b\u6d6e\u304b\u3076\u7d04120V\uff08120V\u56de\u8def\u307e\u305f\u306f230V\uff08\u6b27\u5dde230V\u56de\u8def)\u306b\u5bfe\u3059\u3002<\/p>\n<p>\u30bf\u30c3\u30c1\u3059\u308b\"\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\"\u30ef\u30a4\u30e4\"\u306e\u304b\u3002 \u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3059\u3002 \u30d5\u30eb\u96fb\u6d41\u304c\u6d41\u308c\u307e\u3059\u3002 \u3053\u3046\u3057\u3066\u7d4c\u9a13\u3057\u305f\u96fb\u6c17\u5de5\u4e8b\u58eb\u53d6\u5f97\u6bba\u5bb3\u3057\u3044\"\u65e5\u5e38\"\u3002 \u305d\u306e\u5207\u65ad\u304c\u4e2d\u7acb\u7684\u306a\u30ef\u30a4\u30e4reroute\u3067\u306f\u5b9f\u73fe\u304c\u8ca0\u8377\u56de\u8def\u306e\u77ac\u9593\u304b\u30bf\u30c3\u30c1\u306e\u88f8\u7dda120V\u30c9\u30e9\u30a4\u30d6\u96fb\u6d41\u3092\u901a\u3058\u3066\u4f53\u307e\u3059\u3002<\/p>\n<blockquote><p><strong>Pro\u30c1\u30c3\u30d7#4:<\/strong> \u306a\u5207\u65ad\u304c\u4e2d\u7acb\u7684\u306a\u6307\u63ee\u8005\u304c\u56de\u8def\u3092\u901a\u96fb\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u3084\u3063\u3068\u306e\u30d6\u30ec\u30fc\u30ab\u30fc\u3092\u5207\u308b\u3002 \u8907\u7dda\u5206\u5c90\u56de\u8def(MWBC\u3067backfeed\u96fb\u5727\u306e\u7acb\u5834\u5408\u306e\u307f\u30d6\u30ec\u30fc\u30ab\u30fc\u306f\u3001\u6b21\u306e\u30b7\u30ca\u30ea\u30aa\u3092\"\u30c7\u30c3\u30c9\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u306e\u30ef\u30a4\u30e4\u306f\u5b9f\u969b\u306b120V\u306b\u5bfe\u3059\u3002<\/p><\/blockquote>\n<h3>\u30b7\u30ca\u30ea\u30aa2\u306e\u30de\u30eb\u30c1\u30ef\u30a4\u30e4\u652f\u5e97\u30c8\u30e9\u30c3\u30d7\u56de\u8def<\/h3>\n<p>\u3068\u3044\u3048\u3070MWBCs\u3001\u7279\u5b9a\u306e\u6545\u969c\u30e2\u30fc\u30c9\u304c\u6b7b\u306c\u3053\u3068\u3082DIYers\u307e\u3059\u304b\u3002 \u30de\u30eb\u30c1\u30ef\u30a4\u30e4\u652f\u5e97\u56de\u8def\u7528\u306e\u5171\u901a\u4e2d\u7acb\u3068\u3057\u3066\u78ba\u7acb\u3055\u308c\u3066\u3044\u308b120V\u71b1\u4f1d\u5c0e\u4f53\u306b\u53cd\u5bfe\u3057\u307e\u3059\u3002 \u306e\u4e0b\u3067\u306e\u30d0\u30e9\u30f3\u30b9\u8ca0\u8377\u3001\u4e2d\u6027\u306e\u5dee\u306e\u4e8c\u3064\u306e\u6e29\u6cc9\u3002 \u304c\u307e\u3093\u3059\u308b\u5171\u901a\u306e\u4e2d\u3067\u306e\u30d1\u30cd\u30eb:<\/p>\n<p>\u56de\u8def\u306e1\u306f\u7d66\u990c\u91cf\u751f\u5ba4\u5185\u706f(200W\u3001\u7d041.7A) \u56de\u8def2\u306f\u3001\u7a93AC\u30e6\u30cb\u30c3\u30c8\uff081,500W,12.5\u3059\u3002 \u304d\u306e\u4e21\u65b9\u306e\u30d6\u30ec\u30fc\u30ab\u30fc\u3002 \u306e\u56de\u8def\"\u3001\"\u3067\u3057\u3087\uff1f \u9593\u9055\u3063\u3066\u3044\u307e\u3059\u3002 \u5fc5\u305a\u8aad\u3093\u3067\u304f\u3060\u3055\u3044\u3001\u4e2d\u6027\u7dda\u304b\u3089\u306e\u30d0\u30b9\u30d0\u30fc\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002 \u306f\u308b\u77ac\u9593\u4e2d\u3001\u4e8c\u3064\u306e\u56de\u8def\u306b\u306a\u308a <strong>\u30b7\u30ea\u30fc\u30ba\u3092\u63a5\u7d9a\u3057\u3066\u5168240V<\/strong> (\u5317\u7c73\u306b\u304a\u3051\u308b\u5206\u5272\u4f4d\u76f8\u30b7\u30b9\u30c6\u30e0\uff09\u3060\u3002<\/p>\n<p>\u304a200W\u306e\u30e9\u30a4\u30c8\u306f\u73fe\u5728\u30b7\u30ea\u30fc\u30ba1,500W AC\u8ca0\u8377\u306e\u5168\u4f53240V. \u96fb\u5727\u5206\u5272\u6bd4\u306b\u8ca0\u8377'\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9. \u306e\u706f\"\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u304428V. \u4e2d\u6027\u7dda\u2014the one you\u958b\u50ac\u2014<strong>\u73fe\u5728\u3067212V\u306b\u5bfe\u3059\u3002<\/strong> \u304a\u96fb\u5727\u30c6\u30b9\u30bf\u3092\u8aad\u307f\u8fbc\u307f\u30bc\u30ed\u306e\u4e21\u65b9\u306e\u6e29\u88fd\u54c1\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002 \u3060\u81ea\u4fe1\u304c\u751f\u307e\u308c\u307e\u3057\u305f\u3002 \u3060\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u3002 \u30bf\u30c3\u30c1\u3067\u3059\u3002 \u30b2\u30fc\u30e0\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b7\u30ca\u30ea\u30aa\u304c\u6bba\u5bb3\u3055\u308c\u8907\u6570\u306e\u96fb\u6c17\u5de5\u4e8b\u58eb\u5909\u308f\u3063\u305f\u3060\u3051\u308b\"\u6b7b\"\u30ef\u30a4\u30e4\u304c\u3044\u3092off\u306b\u30d6\u30ec\u30fc\u30ab\u30fc.<\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa3\uff1a\u5931\u308f\u308c\u305f\u4e2d\u7acb\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u308a\u53e3<\/h3>\n<p>\u30ca\u30a4\u30c8\u30e1\u30a2\u30fc-\u30d3\u30d5\u30a9\u30a2-\u30b7\u30ca\u30ea\u30aa\u30c3\u30c8\u30e6\u30cb\u63a5\u7d9a\u30b5\u30fc\u30d3\u30b9\u5165\u306f\u5931\u6557\u3057\u307e\u3059\u3002 \u3053\u306e\u3053\u3068\u304c\u8d77\u304d\u308b\u304b\u3089\u8150\u98df\u6027\u3001\u7269\u7406\u7684\u640d\u50b7\u3001\u307e\u305f\u306f\u4f4e\u304b\u3063\u305f\u63a5\u7d9a\u306e\u5929\u5019\u3067\u3059\u3002 \u3057\u305f\u5834\u5408\u306f\u3001\u4e2d\u6027\u304c\u958b\u304d\u306a\u304c\u3089\u8ca0\u8377\u904b\u55b6 <strong>\u3059\u3079\u3066\u306e120V\u56de\u8def\u3068\u30b7\u30ea\u30fc\u30ba\u3092\u63a5\u7d9a\u3057\u3066\u5168240V.<\/strong> \u30e9\u30a4\u30c8\u306f\u3001\u3053\u308c\u3089\u3064\u306e\u30d5\u30a7\u30fc\u30ba\u3092\u898b\u904e\u96fb\u5727\u304a\u3088\u3073\u7206\u767a. \u96fb\u5b50\u306e\u4f4d\u76f8\u3092\u898b\u4e0d\u8db3\u96fb\u5727\u3068\u3057\u307e\u3059\u3002 \u6bce\u4e2d\u6027\u5c0e\u4f53\u306b\u304a\u30e3\u30f3\u30d7\u306e\u4e00\u90e8\u5206240V\u3001\u8ca0\u8377\u30d0\u30e9\u30f3\u30b9\u3068\u4f4d\u76f8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u30bf\u30c3\u30c1\u8f09\u306e\u4e2d\u6027\u7dda\u306e\"\u5730\"\u30ef\u30a4\u30e4\u3001\u91d1\u5c5e\u6a5f\u5668\u30d5\u30ec\u30fc\u30e0\u3060\u4e86240V\u56de\u8def\u306b\u3088\u3063\u3066\u5730\u7403\u307e\u3059\u3002 \u3053\u306e\u30b7\u30f3\u30b0\u30eb\u63a5\u7d9a\u306e\u30b5\u30fc\u30d3\u30b9\u3059\u3002 \u5168\u304f\u3002<\/p>\n<h2>\u306a\u305c\u4e2d\u6027-\u5730\u76e4\u306e\u7d50\u5408\u306f\u975e\u8b72\u6e21\u6027<\/h2>\n<p>\u307e\u305f\u691c\u8a0e\u2014<strong>\u30bc\u30ed-\u30dc\u30eb\u30c8\u30be\u30fc\u30f3<\/strong>\u306eequipotential\u9762\u3001\u305d\u306e\u7406\u7531\u3092\u5f97\u3089\u308c\u306a\u3044\u3068\u304d\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u885d\u6483\u3092\u53d7\u3051\u89e6\u308c\u308b\u3053\u3068\u3092\u9069\u5207\u306b\u7d50\u5408\u4e2d\u6027\u30d0\u30fc\u2014\u30d2\u30f3\u30b8\u306e\u4e00\u3064\u306e\u91cd\u8981\u306a\u63a5\u7d9a\u65b9\u6cd5: <strong>\u4e2d\u7acb-\u5730\u3067\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u308a\u53e3\u3067\u3059\u3002<\/strong> \u3053\u3053\u3067\u306f\u306a\u3044\u3002 \u304f\"\u306e\u3067\u306f\u306a\u304f\"\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\" \u3053\u306e\u30b3\u30fc\u30c9\u8981\u6c42\u3001\u6cd5\u7684\u62d8\u675f\u529b\u304c\u3042\u307e\u3059\u3002<\/p>\n<p><strong>NEC\u7b2c250.24(A)(5)<\/strong> (2023\u5e74\u7248\uff09\"\u306e\u4e2d\u6027\u5c0e\u4f53\u306f\u3001\u4eba\u4f53\u30a2\u30fc\u30b9\u3092\u53d6\u3063\u3066\u304f\u3060\u3055\"\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u5207\u65ad\u3057\u3001 <strong>\u306e\u307f<\/strong> \u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5207\u65ad. \u56fd\u969b\u7684\u306b\u306f\u3001 <strong>IEC60364-5-54<\/strong> \u8a2d\u7acb\u3068\u540c\u3058\u539f\u7406:\u4e00\u4e3b\u63a5\u5730\u30dd\u30a4\u30f3\u30c8\u304c\u3001\u901a\u5e38\u306e\u539f\u70b9\u306b\u8a2d\u7f6e\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3053\u306e\u30b7\u30f3\u30b0\u30eb\u30dd\u30a4\u30f3\u30c8\u63a5\u5408\u4e8b\u9805: <strong>(1)\u8a2d\u7acb\u306e\u57fa\u6e96\u96fb\u4f4d\u306e\u4e16\u5e2f\u5168\u4f53\u306e\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u3002<\/strong> \u306a\u306e\u3067\"\u4e2d\u7acb\"\u3068\"\u5730\"float\u76f8\u4e92\u306e\u96fb\u4f4d\u5dee\u3068\u306a\u308b\u3002 <strong>(2)\u3053\u308c\u3089\u306e\u65ad\u5c64\u306e\u73fe\u5728\u306e\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30d1\u30b9\u306b\u623b\u308a\u307e\u3059\u3002<\/strong> \u304c\u30db\u30ef\u30a4\u30e4\u30fc\u63a5\u70b9a\u63a5\u91d1\u5c5e\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u306b\u3088\u308b\u6545\u969c\u96fb\u6d41\u304c\u9ad8\u3044\u3053\u3068\u304c\u8981\u6c42\u3055\u308c\u308b\u3053\u3068\u304b\u3089\u3082\u65c5\u884c\u3001\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u8fc5\u901f\u2014\u9069\u5185\u306b0.1\u79d2\u3002 \u3092\u5fc5\u8981\u3068\u3059\u308b\u56fa\u4f53\u63a5\u5730\u63a5\u7d9a\u3057\u307e\u3059\u3002 <strong>(3)\u9632\u6b62\u904e\u96fb\u5727\u6761\u4ef6\u306e\u4e2d\u3067\u4e2d\u6027\u306e\u640d\u5931\u3067\u3059\u3002<\/strong> \u306e\u5834\u5408\u306f\u5149\u71b1\u4e2d\u6027\u304c\u958b\u304d\u3001\u5730\u4e0a\u30b7\u30b9\u30c6\u30e0\u306a\u7d50\u5408\u3057\u3001\u5168\u4f53\u3067float\u306b\u5371\u967a\u96fb\u5727\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\uff61 <strong>(4)\u3067\u5b89\u5168\u306a\u30bc\u30ed-\u53c2\u8003\u4eba\u307e\u3059\u3002<\/strong> \u306e\u30cb\u30d0\u30fc\u3001\u30b3\u30eb\u30b2\u30fc\u30c8\u30c1\u30e5\u30fc\u30d6\u3001\u30d1\u30cd\u30eb\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u3088\u308a\u3001\u5730\u7403\u5168\u306aequipotential\u5275\u9020\u3057\u3001\u30bc\u30ed\u30dc\u30eb\u30c8\u30be\u30fc\u30f3\u3092\u8b70\u8ad6\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19646\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram.webp\" alt=\"Electrical service entrance diagram showing proper neutral-ground bonding at main panel per NEC Article 250.24 with isolated ground and neutral at subpanel\" width=\"600\" height=\"600\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/Service-Entrance-Bonding-Diagram-100x100.webp 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>\u305d\u306e\u5834\u5408\u306e\u50b5\u5238\u7acb\u5730\u3067subpanel\u306f\u9055\u6cd5\u3067\u3042\u308b\u3001\"\u4e00\u3064\u306e\u7d50\u5408\u306e\u307f\"\u3067\u3059\u3002 \u4f5c\u6210\u3059\u308b\u4e26\u5217\u63a5\u5730\u9053\u3001\u4e2d\u6027\u96fb\u6d41\u306e\u6d41\u901a\u3092\u958b\u59cb\u3057\u3066\u63a5\u5730\u5c0e\u4f53\u3068\u91d1\u5c5e\u306e\u8ecc\u9053\u9762. \u305d\u306e\u7d4c\u8def\u306a\u6301\u7d9a\u3051\u307e\u3059\u3002 \u3082\u306e\u304c\u767a\u71b1\u3059\u308b\u3002 \u63a5\u7d9a\u8150\u98df. \u7a81\u5982\u3068\u3057\u3066\u306f\u3001\"\u5730\u9762\"\u30ef\u30a4\u30e4\u30fc\u306b\u3069\u3046\u305e\u4fdd\u8b77\u306e\u305f\u3081\u306b\u306f\u96fb\u6d41\u304c\u885d\u6483\u304d\u3092\u30bf\u30c3\u30c1\u3059\u308b\u3068\u91d1\u5c5e\u5668\u30d5\u30ec\u30fc\u30e0\u3002 \u4e00\u50b5\u5238\u306f\u3001\u56de\u8def\u56f3\u306b\u793a\u3057\u307e\u3059\u3002 \u4e8c\u3064\u306e\u793e\u50b5\u306f\u3001\u8a34\u8a1f\u306e\u6d41\u308c\u306b\u3088\u308b\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n<p>\u305d\u306e <strong>NEC250.142(B)<\/strong> \u660e\u793a\u7684\u306b\u7981\u6b62\u3057\u3066\u63a5\u5730\u306e\u4e2d\u3067\u306e\u4efb\u610f\u306e\u70b9\u306e\u4e0b\u6d41\u306b\u30b5\u30fc\u30d3\u30b9\u306e\u5207\u65ad. \u4e00\u3064\u7d50\u5408\u3057\u307e\u3059\u3002 \u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u308a\u53e3\u3067\u3059\u3002 \u307e\u3057\u305f\u3002<\/p>\n<blockquote><p><strong>Pro\u30c1\u30c3\u30d7#5(\u81e8\u754c\u5b89\u5168\u6027):<\/strong> \u4e2d\u7acb-\u5730\u76e4\u306e\u7d50\u5408\u304c\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3067\u30ef\u30f3\u30dd\u30a4\u30f3\u30c8\uff1a\u30b5\u30fc\u30d3\u30b9\u306e\u5207\u65ad\u307e\u305f\u306f\u30e1\u30a4\u30f3\u30d1\u30cd\u30eb\u3067\u3059\u3002 \u306e\u306a\u3044\u50b5\u5238\u306b\u5bfe\u3057\u3066\u4e2d\u7acb\u7684\u306a\u5730subpanels(250.32\u4f8b\u5916)\u306a\u306e\u3067\u6a5f\u5668\u3001\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002 \u3053\u306e\u30b7\u30f3\u30b0\u30eb\u30dd\u30a4\u30f3\u30c8\u306e\u63a5\u7740\u3092\u78ba\u4fdd\u65ad\u5c64\u6d41\u3092\u6b63\u3057\u304f\u9632\u6b62\u4e2d\u6027\u96fb\u6d41\u304c\u8d70\u884c\u306b\u3088\u308a\u884c\u3063\u305f\u3002<\/p><\/blockquote>\n<div id='gallery-1' class='gallery galleryid-19643 gallery-columns-3 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/ja\/?attachment_id=15258'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block.webp\" class=\"attachment-full size-full\" alt=\"VIOX T008 Neutral Link Brass Terminal Block\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T008-Neutral-Link-Brass-Terminal-Block-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/ja\/?attachment_id=15245'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block.webp\" class=\"attachment-full size-full\" alt=\"VIOX T004 Neutral Link Brass Terminal Block\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/VIOX-T004-Neutral-Link-Brass-Terminal-Block-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/ja\/?attachment_id=16230'><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar.webp\" class=\"attachment-full size-full\" alt=\"VIOX LP1820 Neutral Bar\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/VIOX-LP1820-Neutral-Bar-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p style=\"text-align: center;\"><a href=\"https:\/\/test.viox.com\/ja\/brass-neutral-terminal-block\/\">VIOX\u4e2d\u6027\u7aef\u5b50\u30d6\u30ed\u30c3\u30af<\/a><\/p>\n<h2>\u306e\u5834\u5408\u306e\"\u5b89\u5168\"\u3068\"\u547d\"<\/h2>\n<p>\u3053\u3068\u304c\u4e2d\u6027\u30d6\u30b9\u30d0\u30fc\u306e\u5b89\u5168\u5bfe\u547d:<\/p>\n<p><strong>\u4e2d\u6027\u30d0\u30b9\u306e\u30d0\u30fc\u306f\u3093\u3060\u5834\u5408:<\/strong> \u3067\u9069\u5207\u306b\u63a5\u7740\u5730\u3067\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u308a\u53e3\u3060\u3068\u63a5\u5730\u9762\uff08\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u3001\u5730\u7403\u3001\u30b4\u30e0\u30de\u30c3\u30c8\u306e\u56de\u8def\u304c\u901a\u5e38\u306e\u904b\u7528\u306e\u4e0b\u3067\uff08\u958b\u5834\u3001\u65ad\u5c64\u3001MWBCs\u4e00\u8db3off)\u3001\u304a\u808c\u304c\u4e7e\u71e5\u3059\u308b\u3068\u305d\u306e\u307e\u307e\u306b(1,000+\u30aa\u30fc\u30e0\u62b5\u6297\uff09<\/p>\n<p><strong>\u4e2d\u6027\u30d0\u30b9\u30d0\u30fc\u3060\u5834\u5408:<\/strong> \u4e2d\u9593\u63a5\u7d9a\u958b\u59cb\u306e\u4e0a\u6d41\u8ca0\u8377(\u30d5\u30e9\u30a4\u30f3\u96fb\u5727\u306e\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\");\u307e\u3055\u3093\u30de\u30eb\u30c1\u30ef\u30a4\u30e4\u652f\u5e97\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u30fc\u304c\u4e2d\u65ad\u7dda\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u5165\u53e3\u306b\u7acb\u306b\u5931\u6557\u3057\u307e\u3057\u305f(\u904e\u96fb\u5727\u5168\u4f53\u306e\u30b7\u30b9\u30c6\u30e0\uff09\u306f\u3044\u3001\u6fe1\u308c\u305f\u6c57\u3084\u524a\u6e1b\u3092\u304a\u624b\u5143\u306e\u76ae\u819a\u62b5\u6297\u304c100-500\u03a9).<\/p>\n<p>\u306e\u9055\u3044\u3053\u308c\u3089\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u304a\u3088\u3073\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u304c\u898b\u3048\u306a\u304f\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002 \u3067\u304d\u307e\u305b\u3093\u898b\u3066\u4e2d\u7acb\u7684\u306a\u7dda\u3084\u30ce\u30a6\u30cf\u30a6\u306e\u5834\u5408\u306f\u5b89\u5168\u3067\u3059\u3002 \u3067\u304d\u306a\u3044\u3092\u611f\u3058\u308b\u96fb\u5727\u307e\u3067coursing\u307e\u3059\u3002 \u3067\u304d\u306a\u3044\u57ce\u306e\u4e2d\u306e\u5f85\u6a5f\u3092\u767a\u8868\u3059\u308b\u4e88\u5b9a\u3067\u3059 \u306e\u3060\u3068\u601d\u3044\u307e120V\u3092\u80f8\u306b\u306f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3084\u6587\u8108\u5909\u5316\u306f\u30df\u30ea\u79d2\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u6bce\u5e74\u96fb\u6c17\u30b3\u30fc\u30c9\u3001\u5b89\u5168\u898f\u683c\u3067\u3042\u308a\u3001\u6bce\u56de\u306e\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30d7\u30ed\u30b0\u30e9\u30e0\u91cd\u8996\u306e\u539f\u7406\u306f\u540c\u3058\u3067\u3059: <strong>\u3079\u3066\u306e\u6307\u63ee\u8005\u3068\u3057\u3066\u901a\u96fb\u3057\u307e\u3067\u3092\u5b9f\u8a3c\u3057\u307e\u3059\u3002<\/strong> \u975e\u63a5\u89e6\u96fb\u5727\u8a66\u9a13\u6a5f\u3002 \u4f7f\u7528\u30de\u30eb\u30c1\u30e1\u30fc\u30bf. \u8a66\u9a13\u6e29\u6cc9\u5730\u3001\u30db\u30f3\u30b8\u30e5\u30b2\u30fc\u30c8\u3001\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u306b\u3002 \u3084\u3044\u306a\u3044\u5834\u5408\u306f\u8cc7\u683c\u306e\u3042\u308b\u96fb\u6c17\u5de5\u4e8b\u58eb\u306e\u77e5NEC\u7b2c250,NFPA70E\u30a2\u30fc\u30afflash\u8981\u4ef6\u3001\u9069\u5207\u306a\u30ed\u30c3\u30af\u30a2\u30a6\u30c8\/\u30bf\u30b0\u30a2\u30a6\u30c8\u624b\u7d9a\u304d\u306f\u3002 \u958b\u304b\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u30d1\u30cd\u30eb\u3067\u3059\u3002<\/p>\n<p>\u4e2d\u6027\u30d0\u30fc\u3055\u3093\u3092\u6bba\u3059\u307e\u3067\u3059\u3002 \u304c\u306a\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u601d\u3044\u307e\u305b\u3093\u304c\u3001\u6e21\u3057\u306e\u4e0b\u65b9\u4fee\u6b63\u3092\u767a\u8868\u3057\u3066\u3044\u308b\u3002<\/p>\n<hr \/>\n<p><strong>\u52a9\u3051\u3092\u5fc5\u8981\u3092\u6307\u5b9a\u3059\u308b\u914d\u96fb\u6a5f\u5668\u306b\u9069\u5207\u306a\u63a5\u5730\u306a\u3089\u3073\u306b\u63a5\u7740?<\/strong> VIOX\u96fb\u6a5f\u3092\u88fd\u9020\u3057\u3066\u4f4e\u96fb\u5727\u96fb\u6c17\u90e8\u54c1\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u5206\u5e03\u30d1\u30cd\u30eb\u3001\u30d0\u30b9\u30d0\u30fc\u3001\u906e\u65ad\u5668\u3068\u306e\u63a5\u5730\u30a2\u30af\u30bb\u30b5\u30ea\u30fc\u306e\u4e21\u7acb\u3092\u3082\u3068\u306b\u3001NEC\u304a\u3088\u3073IEC\u307e\u3059\u3002 \u5f0a\u793e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u6280\u8853\u30b5\u30dd\u30fc\u30c8\u6b21\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8.<\/p>\n<\/article>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>You&#8217;re standing in your basement watching your electrician work. The main panel is open\u2014live, energized, 200 amps of potential death just inches away. He reaches in with his bare hand and grabs the neutral bus bar. Your heart stops. But he doesn&#8217;t even flinch. Ten seconds later, he&#8217;s torquing down terminal screws on that same bar, skin contact the whole time, humming along like he&#8217;s changing a light bulb. So what&#8217;s happening here? If the neutral conductor carries current back from your lights, appliances, and motors to complete the circuit, why isn&#8217;t that bus bar electrifying anyone who touches it? And more importantly\u2014when does it become deadly? The answer involves [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19651,"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-19643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/19643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/comments?post=19643"}],"version-history":[{"count":4,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/19643\/revisions"}],"predecessor-version":[{"id":19652,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/19643\/revisions\/19652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media\/19651"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media?parent=19643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/categories?post=19643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/tags?post=19643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}