{"id":9884,"date":"2025-06-24T15:37:01","date_gmt":"2025-06-24T07:37:01","guid":{"rendered":"https:\/\/totcables.com\/?p=9884"},"modified":"2025-09-05T09:29:56","modified_gmt":"2025-09-05T01:29:56","slug":"complete-guide-to-bx-cable-understanding-armored-electrical-cable","status":"publish","type":"post","link":"https:\/\/totcables.com\/?p=9884","title":{"rendered":"BX Cable: The Ultimate Guide to Armored Electrical Cable"},"content":{"rendered":"

{“main-title”:{“component”:”hc_title”,”id”:”main-title”,”title”:””,”subtitle”:”BX is a name for metal-armored electrical cable for indoor or outdoor use. Going under alternative names such as metallic sheathed cable, type AC, MC, Greenfield, or armored cable, BX cable is a collection of plastic-coated insulated wires (typically 14- or 12-gauge), bundled and protected by a flexible metal armor sheath.”,”title_content”:{“component”:”hc_title_image”,”id”:”title-image”,”image”:”https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/what-is-bx-cable-1024×794.jpg|1792|2310|9885″,”full_screen”:false,”full_screen_height”:””,”parallax”:false,”bleed”:””,”ken_burn”:””,”overlay”:”transparent-dark”,”breadcrumbs”:true,”white”:true,”position”:””}},”section_5ZtkF”:{“component”:”hc_section”,”id”:”section_5ZtkF”,”section_width”:””,”animation”:””,”animation_time”:””,”timeline_animation”:””,”timeline_delay”:””,”timeline_order”:””,”vertical_row”:””,”box_middle”:””,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”section_content”:[{“component”:”hc_column”,”id”:”column_vtfQF”,”column_width”:”col-md-12″,”animation”:””,”animation_time”:””,”timeline_animation”:””,”timeline_delay”:””,”timeline_order”:””,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”main_content”:[{“component”:”hc_wp_editor”,”id”:”Xhugf”,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”editor_content”:”If you’re in an older home, you may have heard the term BX cable<\/b>. With its distinctive metal armor, this type of wiring was once a cutting-edge solution for electrical safety. But how does it hold up against today’s standards?\\n\\nThis guide will walk you through what BX cable is, its biggest safety concern, and how it compares to the modern wiring you see today, like Romex and MC cable.\\n\\n<\/p>\n

\n

\\n\\n

what is bx cable

what is bx cable<\/p><\/div>\\n<\/p>\n

What Is BX Cable? And Is It Safe?<\/b><\/h3>\n

\\nBX cable<\/b> is an old-style armored cable. It consists of two or three insulated electrical wires wrapped inside a flexible, spiraling steel sheath. It gained popularity in the 1920s as a major improvement over older wiring methods, providing physical protection for the wires.\\n\\nThe biggest safety issue with old BX cable, however, is that it typically lacks a dedicated ground wire<\/b>. While the metal sheath was intended to act as a ground, this method is unreliable today. Over time, rust or poor connections can break the grounding path, leaving your electrical system and appliances without a safe way to discharge stray current.\\n\\nBecause of this, old BX wiring is not considered safe by modern electrical codes<\/b> and should be inspected by a professional, especially during renovations.\\n\\n<\/p>\n

\n

\\n\\n<\/p>\n

BX vs. Romex vs. MC Cable: A Quick Comparison<\/b><\/h3>\n

\\nThe electrical world has evolved significantly since the days of BX wiring. Today, most installations use either non-metallic (NM) cable, commonly known as Romex, or a modern version of armored cable, known as MC cable.\\n\\nHere’s a simple breakdown of the differences:\\n<\/p>\n

\\n<\/p>\n
\\n<\/p>\n
\\n<\/p>\n
\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n\\n<\/p>\n
Feature<\/td>\n

\\n<\/p>\n

Old BX Cable<\/b><\/td>\n

\\n<\/p>\n

Romex Cable (NM)<\/b><\/td>\n

\\n<\/p>\n

MC Cable<\/b><\/td>\n

\\n<\/tr>\n

\\n<\/thead>\n

\\n<\/p>\n

Sheath<\/b><\/td>\n

\\n<\/p>\n

Flexible steel armor<\/td>\n

\\n<\/p>\n

Flexible plastic sheath<\/td>\n

\\n<\/p>\n

Flexible aluminum\/steel armor<\/td>\n

\\n<\/tr>\n

\\n<\/p>\n

Grounding<\/b><\/td>\n

\\n<\/p>\n

Relies on metal sheath (unreliable)<\/td>\n

\\n<\/p>\n

Dedicated ground wire<\/b><\/td>\n

\\n<\/p>\n

Dedicated ground wire<\/b><\/td>\n

\\n<\/tr>\n

\\n<\/p>\n

Best For<\/b><\/td>\n

\\n<\/p>\n

Outdated installations (common in pre-1950s homes)<\/td>\n

\\n<\/p>\n

Most modern residential wiring<\/td>\n

\\n<\/p>\n

Commercial, exposed runs, and light industrial<\/td>\n

\\n<\/tr>\n

\\n<\/p>\n

Protection<\/b><\/td>\n

\\n<\/p>\n

Good physical protection<\/td>\n

\\n<\/p>\n

Lacks physical protection; requires protection in exposed areas<\/td>\n

\\n<\/p>\n

Excellent physical protection<\/td>\n

\\n<\/tr>\n

\\n<\/p>\n

Safety<\/b><\/td>\n

\\n<\/p>\n

Not up to modern safety codes<\/b><\/td>\n

\\n<\/p>\n

Meets modern safety codes<\/td>\n

\\n<\/p>\n

Meets modern safety codes<\/td>\n

\\n<\/tr>\n

\\n<\/tbody>\n

\\n<\/table>\n

\\n<\/p><\/div>\n

\\n<\/p><\/div>\n

\\n<\/p><\/div>\n

\\n<\/p><\/div>\n

\\n\\n<\/p>\n

\n

\\n\\n<\/p>\n

Conclusion: Is It Time for an Upgrade?<\/b><\/h3>\n

\\nWhile BX cable was an innovative product for its time, its lack of a reliable grounding path makes it a significant safety concern today.\\n\\nIf your home has old BX wiring, it’s highly recommended that you have a licensed electrician inspect your system. They can help you determine whether it’s safe to continue using or if it’s time to upgrade to a modern, grounded wiring system<\/b> like Romex or MC cable.\\n\\nChoosing the right wiring is a critical step in ensuring the safety and reliability of your home’s electrical system.”}]}],”section_settings”:””},”scripts”:{},”css”:{},”css_page”:” .mobile-scroll-table {\\n overflow-x: auto;\\n width: 100%;\\n }\\n\\n .mobile-scroll-table table {\\n border-collapse: collapse;\\n min-width: 800px;\\n width: 100%;\\n font-family: Arial, sans-serif;\\n }\\n\\n .mobile-scroll-table th,\\n .mobile-scroll-table td {\\n border: 1px solid #ccc;\\n padding: 8px;\\n text-align: center;\\n white-space: nowrap;\\n }\\n\\n .mobile-scroll-table thead {\\n background-color: #f2f2f2;\\n }\\n\\n .mobile-scroll-table .subheader {\\n font-size: 13px;\\n font-weight: normal;\\n background-color: #fafafa;\\n }\\n\\n .mobile-scroll-table .header-row th {\\n vertical-align: middle;\\n }”,”template_setting”:{“settings”:{“id”:”settings”}},”template_setting_top”:{},”page_setting”:{“settings”:[“lock-mode-off”]},”post_type_setting”:{“settings”:{“image”:”https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/what-is-bx-cable-1024×794.jpg|1792|2310|9885″,”excerpt”:”BX is a name for metal-armored electrical cable for indoor or outdoor use. Going under alternative names such as metallic sheathed cable, type AC, MC, Greenfield, or armored cable, BX cable is a collection of plastic-coated insulated wires (typically 14- or 12-gauge), bundled and protected by a flexible metal armor sheath.”,”extra_1″:””,”extra_2″:””,”icon”:{“icon”:””,”icon_style”:””,”icon_image”:””}}}}<\/p>\n","protected":false},"excerpt":{"rendered":"

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Going under alternative names such as metallic sheathed cable, type AC, MC, Greenfield, or armored cable, BX cable is a collection of plastic-coated insulated wires (typically 14- or 12-gauge), bundled and protected by a flexible metal armor sheath.”,”title_content”:{“component”:”hc_title_image”,”id”:”title-image”,”image”:”https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/what-is-bx-cable-1024×794.jpg|1792|2310|9885″,”full_screen”:false,”full_screen_height”:””,”parallax”:false,”bleed”:””,”ken_burn”:””,”overlay”:”transparent-dark”,”breadcrumbs”:true,”white”:true,”position”:””}},”section_5ZtkF”:{“component”:”hc_section”,”id”:”section_5ZtkF”,”section_width”:””,”animation”:””,”animation_time”:””,”timeline_animation”:””,”timeline_delay”:””,”timeline_order”:””,”vertical_row”:””,”box_middle”:””,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”section_content”:[{“component”:”hc_column”,”id”:”column_vtfQF”,”column_width”:”col-md-12″,”animation”:””,”animation_time”:””,”timeline_animation”:””,”timeline_delay”:””,”timeline_order”:””,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”main_content”:[{“component”:”hc_wp_editor”,”id”:”Xhugf”,”css_classes”:””,”custom_css_classes”:””,”custom_css_styles”:””,”editor_content”:”If you’re in an older […]<\/p>\n","protected":false},"author":1,"featured_media":9885,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"\nBX Cable: The Ultimate Guide to Armored Electrical Cable<\/title>\n<meta name=\"description\" content=\"BX is a name for metal-armored electrical cable for indoor or outdoor use. 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