{"id":9317,"date":"2025-06-12T17:32:49","date_gmt":"2025-06-12T09:32:49","guid":{"rendered":"https:\/\/totcables.com\/?p=9317"},"modified":"2025-06-12T17:33:14","modified_gmt":"2025-06-12T09:33:14","slug":"mtw-vs-thhn-whats-the-difference","status":"publish","type":"post","link":"https:\/\/totcables.com\/?p=9317","title":{"rendered":"MTW vs THHN \u2013 What\u2019s the Difference?"},"content":{"rendered":"<p>{&#8220;main-title&#8221;:{&#8220;component&#8221;:&#8221;hc_title&#8221;,&#8221;id&#8221;:&#8221;main-title&#8221;,&#8221;title&#8221;:&#8221;&#8221;,&#8221;subtitle&#8221;:&#8221;When selecting the right wire for your industrial or electrical project, two common types often come up: MTW wire and THHN wire. Both are widely used and UL-listed, but they serve different purposes based on insulation, flexibility, temperature rating, and environmental resistance. So, what&#8217;s the difference between MTW and THHN wire?&#8221;,&#8221;title_content&#8221;:{&#8220;component&#8221;:&#8221;hc_title_image&#8221;,&#8221;id&#8221;:&#8221;title-image&#8221;,&#8221;image&#8221;:&#8221;https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/mtw-vs-thhn.gif|600|800|9319&#8243;,&#8221;full_screen&#8221;:false,&#8221;full_screen_height&#8221;:&#8221;&#8221;,&#8221;parallax&#8221;:false,&#8221;bleed&#8221;:&#8221;&#8221;,&#8221;ken_burn&#8221;:&#8221;&#8221;,&#8221;overlay&#8221;:&#8221;transparent-dark&#8221;,&#8221;breadcrumbs&#8221;:true,&#8221;white&#8221;:true,&#8221;position&#8221;:&#8221;&#8221;}},&#8221;section_5ZtkF&#8221;:{&#8220;component&#8221;:&#8221;hc_section&#8221;,&#8221;id&#8221;:&#8221;section_5ZtkF&#8221;,&#8221;section_width&#8221;:&#8221;&#8221;,&#8221;animation&#8221;:&#8221;&#8221;,&#8221;animation_time&#8221;:&#8221;&#8221;,&#8221;timeline_animation&#8221;:&#8221;&#8221;,&#8221;timeline_delay&#8221;:&#8221;&#8221;,&#8221;timeline_order&#8221;:&#8221;&#8221;,&#8221;vertical_row&#8221;:&#8221;&#8221;,&#8221;box_middle&#8221;:&#8221;&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;section_content&#8221;:[{&#8220;component&#8221;:&#8221;hc_column&#8221;,&#8221;id&#8221;:&#8221;column_vtfQF&#8221;,&#8221;column_width&#8221;:&#8221;col-md-12&#8243;,&#8221;animation&#8221;:&#8221;&#8221;,&#8221;animation_time&#8221;:&#8221;&#8221;,&#8221;timeline_animation&#8221;:&#8221;&#8221;,&#8221;timeline_delay&#8221;:&#8221;&#8221;,&#8221;timeline_order&#8221;:&#8221;&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;main_content&#8221;:[{&#8220;component&#8221;:&#8221;hc_wp_editor&#8221;,&#8221;id&#8221;:&#8221;Xhugf&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;editor_content&#8221;:&#8221;<\/p>\n<p data-start='160' data-end='505'>When selecting the right wire for your industrial or electrical project, two common types often come up: <a href='https:\/\/totcables.com\/mtw-wire\/'><strong data-start='265' data-end='277'>MTW wire<\/strong><\/a> and <a href='https:\/\/totcables.com\/electrical-wire\/thhn-thwn-thwn-2-wire\/'><strong data-start='282' data-end='295'>THHN wire<\/strong><\/a>. Both are widely used and UL-listed, but they serve different purposes based on insulation, flexibility, temperature rating, and environmental resistance. So, <em data-start='455' data-end='504'>what&#8217;s the difference between MTW and THHN wire<\/em>?<\/p>\n<p>\\n\\n\\n<div id=\"attachment_9319\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-9319\" class='size-medium wp-image-9319' src='https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/mtw-vs-thhn-300x225.gif' alt='mtw vs thhn' width='300' height='225'><p id=\"caption-attachment-9319\" class=\"wp-caption-text\">mtw vs thhn<\/p><\/div>\\n<\/p>\n<p data-start='507' data-end='527'>Let\u2019s break it down.<\/p>\n<p>\\n\\n\\n<\/p>\n<hr data-start='529' data-end='532'>\\n\\n<\/p>\n<h2 data-start='534' data-end='554'>What Is MTW Wire?<\/h2>\n<p>\\n<\/p>\n<p data-start='556' data-end='736'><strong data-start='556' data-end='563'>MTW<\/strong> stands for <strong data-start='575' data-end='596'>Machine Tool Wire<\/strong>. It is primarily designed for wiring industrial machinery, control panels, and equipment where flexibility and oil resistance are critical.<\/p>\n<p>\\n<\/p>\n<p data-start='738' data-end='767'><strong data-start='738' data-end='766'>Key Features of MTW Wire<\/strong>:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='768' data-end='1056'>\\n \\t<\/p>\n<li data-start='768' data-end='808'>\\n\n<p data-start='770' data-end='808'><strong data-start='770' data-end='808'>Flexible stranded copper conductor<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='809' data-end='874'>\\n\n<p data-start='811' data-end='840'><strong data-start='811' data-end='829'>PVC insulation<\/strong> rated for:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='843' data-end='874'>\\n \\t<\/p>\n<li data-start='843' data-end='857'>\\n\n<p data-start='845' data-end='857'><strong data-start='845' data-end='857'>90\u00b0C dry<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='860' data-end='874'>\\n\n<p data-start='862' data-end='874'><strong data-start='862' data-end='874'>60\u00b0C wet<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='875' data-end='920'>\\n\n<p data-start='877' data-end='920'><strong data-start='877' data-end='920'>Oil-, moisture-, and abrasion-resistant<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='921' data-end='970'>\\n\n<p data-start='923' data-end='970'><strong data-start='923' data-end='934'>UL 1063<\/strong>, <strong data-start='936' data-end='947'>CSA AWM<\/strong>, <strong data-start='949' data-end='970'>NFPA 79 compliant<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='971' data-end='1056'>\\n\n<p data-start='973' data-end='1056'>Ideal for use in <strong data-start='990' data-end='1007'>machine tools<\/strong>, <strong data-start='1009' data-end='1030'>automated systems<\/strong>, and <strong data-start='1036' data-end='1056'>control circuits<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n\\n<\/p>\n<hr data-start='1058' data-end='1061'>\\n\\n<\/p>\n<h2 data-start='1063' data-end='1084'>What Is THHN Wire?<\/h2>\n<p>\\n<\/p>\n<p data-start='1086' data-end='1266'><strong data-start='1086' data-end='1094'>THHN<\/strong> stands for <strong data-start='1106' data-end='1156'>Thermoplastic High Heat-resistant Nylon-coated<\/strong> wire. It is typically used in building wiring, conduit systems, and general-purpose electrical installations.<\/p>\n<p>\\n<\/p>\n<p data-start='1268' data-end='1298'><strong data-start='1268' data-end='1297'>Key Features of THHN Wire<\/strong>:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='1299' data-end='1570'>\\n \\t<\/p>\n<li data-start='1299' data-end='1339'>\\n\n<p data-start='1301' data-end='1339'><strong data-start='1301' data-end='1339'>Stranded or solid copper conductor<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1340' data-end='1396'>\\n\n<p data-start='1342' data-end='1396'><strong data-start='1342' data-end='1360'>PVC insulation<\/strong> with a <strong data-start='1368' data-end='1396'>nylon (polyamide) jacket<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1397' data-end='1443'>\\n\n<p data-start='1399' data-end='1409'>Rated for:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='1412' data-end='1443'>\\n \\t<\/p>\n<li data-start='1412' data-end='1426'>\\n\n<p data-start='1414' data-end='1426'><strong data-start='1414' data-end='1426'>90\u00b0C dry<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1429' data-end='1443'>\\n\n<p data-start='1431' data-end='1443'><strong data-start='1431' data-end='1443'>75\u00b0C wet<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1444' data-end='1478'>\\n\n<p data-start='1446' data-end='1478'>Generally less flexible than MTW<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1479' data-end='1570'>\\n\n<p data-start='1481' data-end='1570'>Common in <strong data-start='1491' data-end='1516'>conduit installations<\/strong>, <strong data-start='1518' data-end='1542'>commercial buildings<\/strong>, and <strong data-start='1548' data-end='1570'>residential wiring<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n\\n<\/p>\n<hr data-start='1572' data-end='1575'>\\n\\n<\/p>\n<h2 data-start='1577' data-end='1616'>MTW vs THHN: Side-by-Side Comparison<\/h2>\n<p>\\n<\/p>\n<div class='_tableContainer_16hzy_1'>\\n<\/p>\n<div class='_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse' tabindex='-1'>\\n<\/p>\n<table class='w-fit min-w-(--thread-content-width)' data-start='1618' data-end='2771'>\\n<\/p>\n<thead data-start='1618' data-end='1734'>\\n<\/p>\n<tr data-start='1618' data-end='1734'>\\n<\/p>\n<th data-start='1618' data-end='1651' data-col-size='sm'>Feature<\/th>\n<p>\\n<\/p>\n<th data-start='1651' data-end='1692' data-col-size='sm'>MTW Wire<\/th>\n<p>\\n<\/p>\n<th data-start='1692' data-end='1734' data-col-size='sm'>THHN Wire<\/th>\n<p>\\n<\/tr>\n<p>\\n<\/thead>\n<p>\\n<\/p>\n<tbody data-start='1851' data-end='2771'>\\n<\/p>\n<tr data-start='1851' data-end='1967'>\\n<\/p>\n<td data-start='1851' data-end='1883' data-col-size='sm'><strong data-start='1853' data-end='1866'>Full Name<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1883' data-end='1924'>Machine Tool Wire<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1924' data-end='1967'>Thermoplastic High Heat-resistant Nylon<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='1968' data-end='2082'>\\n<\/p>\n<td data-start='1968' data-end='1999' data-col-size='sm'><strong data-start='1970' data-end='1985'>Flexibility<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1999' data-end='2040'>High (stranded conductor)<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2040' data-end='2082'>Medium (may be solid or stranded)<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2083' data-end='2197'>\\n<\/p>\n<td data-start='2083' data-end='2114' data-col-size='sm'><strong data-start='2085' data-end='2107'>Temperature Rating<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2114' data-end='2155'>90\u00b0C dry \/ 60\u00b0C wet<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2155' data-end='2197'>90\u00b0C dry \/ 75\u00b0C wet<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2198' data-end='2312'>\\n<\/p>\n<td data-start='2198' data-end='2229' data-col-size='sm'><strong data-start='2200' data-end='2218'>Oil Resistance<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2229' data-end='2270'>Yes<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2270' data-end='2312'>Limited<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2313' data-end='2427'>\\n<\/p>\n<td data-start='2313' data-end='2344' data-col-size='sm'><strong data-start='2315' data-end='2325'>Jacket<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2344' data-end='2385'>PVC only<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2385' data-end='2427'>PVC + Nylon<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2428' data-end='2542'>\\n<\/p>\n<td data-start='2428' data-end='2459' data-col-size='sm'><strong data-start='2430' data-end='2445'>Application<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2459' data-end='2500'>Machinery, control panels<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2500' data-end='2542'>Building wiring, conduit<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2543' data-end='2657'>\\n<\/p>\n<td data-start='2543' data-end='2574' data-col-size='sm'><strong data-start='2545' data-end='2558'>Standards<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2574' data-end='2615'>UL 1063, CSA, NFPA 79<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2615' data-end='2657'>UL 83, CSA<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='2658' data-end='2771'>\\n<\/p>\n<td data-start='2658' data-end='2689' data-col-size='sm'><strong data-start='2660' data-end='2672'>Ampacity<\/strong><\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2689' data-end='2729'>Slightly lower than THHN (same size)<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='2729' data-end='2771'>Slightly higher ampacity<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/tbody>\n<p>\\n<\/table>\n<p>\\n<\/p>\n<div class='sticky end-(--thread-content-margin) h-0 self-end select-none'>\\n<\/p>\n<div class='absolute end-0 flex items-end'><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n\\n<\/p>\n<hr data-start='2773' data-end='2776'>\\n\\n<\/p>\n<h2 data-start='2778' data-end='2809'>Which One Should You Choose?<\/h2>\n<p>\\n<\/p>\n<ul data-start='2811' data-end='3175'>\\n \\t<\/p>\n<li data-start='2811' data-end='3008'>\\n\n<p data-start='2813' data-end='2836'>Choose <strong data-start='2820' data-end='2832'>MTW Wire<\/strong> if:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='2839' data-end='3008'>\\n \\t<\/p>\n<li data-start='2839' data-end='2879'>\\n\n<p data-start='2841' data-end='2879'>You\u2019re wiring <strong data-start='2855' data-end='2879'>industrial machinery<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2882' data-end='2968'>\\n\n<p data-start='2884' data-end='2968'>You need <strong data-start='2893' data-end='2905'>flexible<\/strong>, <strong data-start='2907' data-end='2924'>oil-resistant<\/strong> wire for <strong data-start='2934' data-end='2968'>moving parts or control panels<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2971' data-end='3008'>\\n\n<p data-start='2973' data-end='3008'>You must meet <strong data-start='2987' data-end='2998'>NFPA 79<\/strong> standards<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='3010' data-end='3175'>\\n\n<p data-start='3012' data-end='3036'>Choose <strong data-start='3019' data-end='3032'>THHN Wire<\/strong> if:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='3039' data-end='3175'>\\n \\t<\/p>\n<li data-start='3039' data-end='3085'>\\n\n<p data-start='3041' data-end='3085'>You\u2019re doing <strong data-start='3054' data-end='3072'>conduit wiring<\/strong> in buildings<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='3088' data-end='3124'>\\n\n<p data-start='3090' data-end='3124'>Flexibility is not a major concern<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='3127' data-end='3175'>\\n\n<p data-start='3129' data-end='3175'>You want slightly <strong data-start='3147' data-end='3166'>higher ampacity<\/strong> per size<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n\\n<\/p>\n<hr data-start='3177' data-end='3180'>\\n\\n<\/p>\n<h2 data-start='3182' data-end='3239'>Common Misconception: Can You Use THHN Instead of MTW?<\/h2>\n<p>\\n<\/p>\n<p data-start='3241' data-end='3475'>Not always. While both wires may have <strong data-start='3279' data-end='3307'>dual or multiple ratings<\/strong> (e.g., <strong data-start='3315' data-end='3334'>THHN\/MTW\/THWN-2<\/strong>), not all THHN wires are rated for MTW applications. Always check the cable&#8217;s <strong data-start='3413' data-end='3425'>UL label<\/strong> and <strong data-start='3430' data-end='3449'>jacket markings<\/strong> to confirm compatibility.<\/p>\n<p>\\n\\n\\n<\/p>\n<hr data-start='3477' data-end='3480'>\\n\\n<\/p>\n<h2 data-start='3482' data-end='3495'>Conclusion<\/h2>\n<p>\\n<\/p>\n<p data-start='3497' data-end='3850'>Understanding the difference between <strong data-start='3534' data-end='3554'>MTW vs THHN wire<\/strong> is essential for choosing the right cable for your project. <strong data-start='3615' data-end='3622'>MTW<\/strong> excels in flexibility and industrial environments, while <strong data-start='3680' data-end='3688'>THHN<\/strong> is ideal for building wire and conduit installations. The right choice depends on your application\u2019s <strong data-start='3790' data-end='3804'>mechanical<\/strong>, <strong data-start='3806' data-end='3820'>electrical<\/strong>, and <strong data-start='3826' data-end='3843'>environmental<\/strong> needs.<\/p>\n<p>\\n\\n\\n<\/p>\n<hr data-start='3852' data-end='3855'>\\n\\n<\/p>\n<h3 data-start='3857' data-end='3880'>Need Help Choosing?<\/h3>\n<p>\\n<\/p>\n<p data-start='3882' data-end='4052'>Still not sure which cable fits your needs? Contact our team today \u2014 we offer a wide range of <a href='https:\/\/totcables.com\/mtw-wire\/'><strong data-start='3976' data-end='3983'>MTW<\/strong><\/a> and <a href='https:\/\/totcables.com\/electrical-wire\/thhn-thwn-thwn-2-wire\/'><strong data-start='3988' data-end='3996'>THHN<\/strong> wire<\/a> sizes, with fast delivery and competitive pricing.<\/p>\n<p>&#8220;}]}],&#8221;section_settings&#8221;:&#8221;&#8221;},&#8221;scripts&#8221;:{},&#8221;css&#8221;:{},&#8221;css_page&#8221;:&#8221;&#8221;,&#8221;template_setting&#8221;:{&#8220;settings&#8221;:{&#8220;id&#8221;:&#8221;settings&#8221;}},&#8221;template_setting_top&#8221;:{},&#8221;page_setting&#8221;:{&#8220;settings&#8221;:[&#8220;lock-mode-off&#8221;]},&#8221;post_type_setting&#8221;:{&#8220;settings&#8221;:{&#8220;image&#8221;:&#8221;https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/mtw-vs-thhn.gif|600|800|9319&#8243;,&#8221;excerpt&#8221;:&#8221;When selecting the right wire for your industrial or electrical project, two common types often come up: MTW wire and THHN wire. Both are widely used and UL-listed, but they serve different purposes based on insulation, flexibility, temperature rating, and environmental resistance. So, what&#8217;s the difference between MTW and THHN wire?&#8221;,&#8221;extra_1&#8243;:&#8221;&#8221;,&#8221;extra_2&#8243;:&#8221;&#8221;,&#8221;icon&#8221;:{&#8220;icon&#8221;:&#8221;&#8221;,&#8221;icon_style&#8221;:&#8221;&#8221;,&#8221;icon_image&#8221;:&#8221;&#8221;}}}}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;main-title&#8221;:{&#8220;component&#8221;:&#8221;hc_title&#8221;,&#8221;id&#8221;:&#8221;main-title&#8221;,&#8221;title&#8221;:&#8221;&#8221;,&#8221;subtitle&#8221;:&#8221;When selecting the right wire for your industrial or electrical project, two common types often come up: MTW wire and THHN wire. Both are widely used and UL-listed, but they serve different purposes based on insulation, flexibility, temperature rating, and environmental resistance. 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