[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-564081-105":53,"doc-detail-564081-en":120},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":113,"head_meta":115,"extra_data":117,"updated_unix":119},105,"en","conduit-fill-calculator-nec-raceway-fill-percentages-for-thhn-xhhw","Conduit Fill Calculator - NEC Raceway Fill Percentages for THHN & XHHW","","Conduit Fill Calculator provides raceway fill percentage values according to NEC for THHN and XHHW conductors. It includes two primary fill regimes (40% fill for over 2 wires and 60% fill for nipple conditions) with results by raceway type such as EMT, GRC, IMC, PVC40, PVC80, FLEX, and ST. It also supplies conductor square area data by AWG/kcmil and totals of conductor square area for varying conductor counts, supporting electrical estimating and sizing decisions for conduit 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THHN and XHHW by AWG/kcmil, and totals by the number of conductors, supporting conduit sizing and fill calculations.","https://schema.org",{"og:url":78,"og:type":114,"og:title":59,"og:site_name":86,"og:description":61},"article",{"robots":116,"canonical":78},"index,follow",{"doc_id":118,"site_id":56},564081,1791840156,{"code":4,"msg":5,"data":121},{"doc_id":118,"user_id":122,"nickname":83,"user_avatar":123,"doc_module":9,"category_id":35,"category_name":36,"doc_title":59,"doc_description":61,"doc_content":124,"file_id":125,"file_url":126,"file_type":127,"file_size":128,"view_count":4,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":9,"language":129,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":130,"faqs":131,"seo_title":132,"seo_description":61,"update_tm":119,"read_time":4},962090760832,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","CONDUIT FILL CALCULATOR for THHN & XHHW  \nRaceway Fill Percentages as per NEC  \n\n| SIZE | 40% Fill – Over 2 Wires |  |  |  |  |  |  | 60% Fill – Nipple |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  | EMT | GRC | IMC | PVC40 | PVC80 | FLEX | ST | EMT | GRC | IMC | PVC40 | PVC80 | FLEX | ST |\n| 1/2 | 0.122 | 0.125 | 0.137 | 0.114 | 0.087 | 0.127 | 0.125 | .182 | .188 | .205 | .171 | .130 | .190 | .188 |\n| 3/4 | 0.213 | 0.220 | 0.235 | 0.203 | 0.164 | 0.213 | 0.216 | .320 | .329 | .352 | .305 | .246 | .320 | .325 |\n| 1 | 0.346 | 0.355 | 0.384 | 0.333 | 0.275 | 0.327 | 0.349 | .519 | .532 | .575 | .499 | .413 | .490 | .524 |\n| 1 1/4 | 0.598 | 0.610 | 0.659 | 0.581 | 0.495 | 0.511 | 0.611 | .897 | .916 | .988 | .872 | .742 | .766 | .917 |\n| 1 1/2 | 0.814 | 0.829 | 0.89 | 0.794 | 0.684 | 0.743 | 0.792 | 1.221 | 1.243 | 1.335 | 1.191 | 1.027 | 1.115 | 1.188 |\n| 2 | 1.342 | 1.363 | 1.452 | 1.316 | 1.150 | 1.307 | 1.298 | 2.013 | 2.045 | 2.178 | 1.975 | 1.725 | 1.961 | 1.949 |\n| 2 1/2 | 2.343 | 1.946 | 2.054 | 1.878 | 1.647 | 1.963 | 1.953 | 3.515 | 2.919 | 3.081 | 2.817 | 2.471 | 2.945 | 2.929 |\n| 3 | 3.538 | 3.00 | 3.169 | 2.907 | 2.577 | 2.827 | 2.99 | 5.307 | 4.499 | 4.753 | 4.361 | 3.865 | 4.241 | 4.485 |\n| 3 1/2 | 4.618 | 4.004 | 4.234 | 3.895 |  | 3.848 | 3.893 | 6.927 | 6.006 | 6.351 | 5.842 |  | 5.773 | 5.839 |\n| 4 | 5.901 | 5.153 | 5.452 | 5.022 | 4.503 | 5.027 | 5.077 | 8.852 | 7.729 | 8.179 | 7.532 | 6.755 | 7.540 | 7.615 |\n| 5 |  | 8.085 |  | 7.904 | 7.142 |  |  |  | 12.127 |  | 11.856 | 10.713 |  |  |\n| 6 |  | 11.663 |  | 11.427 | 10.239 |  |  |  | 17.495 |  | 17.140 | 15.359 |  |  |\n\nConductor Square Areas  \n\n| \u003Cbr>Conductor Square Area\u003Cbr>|  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| \u003Cbr>AWG / kcmil | THHN | XHHW | AWG / kcmil | THHN | XHHW | |  | THHN | XHHW\u003Cbr>|  |\n| \u003Cbr>14 | 0.0097 | 0.0139 | 2 | 0.1158 | 0.1146 | | \u003Cbr>300 | 0.4608 | 0.4536 | |\n| \u003Cbr>12 | 0.0133 | 0.0181 | 1 | 0.1562 | 0.1534 | | \u003Cbr>350 | 0.5242 | 0.5166 | |\n| \u003Cbr>10 | 0.0211 | 0.0243 | 1/0 | 0.1855 | 0.1825 | | \u003Cbr>400 | 0.5863 | 0.5782 | |\n| \u003Cbr>8 | 0.0366 | 0.0437 | 2/0 | 0.2223 | 0.2190 | | \u003Cbr>500 | 0.7073 | 0.6984 | |\n| \u003Cbr>6 | 0.0507 | 0.0590 | 3/0 | 0.2679 | 0.2642 | | \u003Cbr>600 | 0.8676 | 0.8709 | |\n| \u003Cbr>4 | 0.0824 | 0.0814 | 4/0 | 0.3237 | 0.3197 | | \u003Cbr>750 | 1.0496 | 1.0532 | |\n| \u003Cbr>3 | 0.0973 | 0.0962 | 250 | 0.3970 | 0.3904 | | \u003Cbr>1000 | 1.3478 | 1.3519 | |\n\n| Number of Conductors – Total Square Area – THHN |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| AWG | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |\n| 14 | 0.0097 | .019 | .029 | .039 | .049 | .058 | .068 | .078 | .087 | .097 | .107 | .116 | .126 | .136 | .146 |\n| 12 | 0.0133 | .027 | .040 | .053 | .067 | .080 | .093 | .106 | .120 | .133 | .146 | .160 | .173 | .186 | .200 |\n| 10 | 0.0211 | .042 | .063 | .084 | .106 | .127 | .148 | .169 | .190 | .211 | .232 | .253 | .274 | .295 | .317 |\n| 8 | 0.0366 | .073 | .110 | .146 | .183 | .220 | .256 | .293 | .329 | .366 | .403 | .439 | .476 | .512 | .549 |\n| 6 | 0.0507 | .101 | .152 | .203 | .254 | .304 | .355 | .406 | .456 | .507 | .558 | .608 | .659 | .710 | .761 |\n| 4 | 0.0824 | .165 | .247 | .330 | .412 | .494 | .577 | .659 | .742 | .824 | .906 | .989 | 1.071 | 1.154 | 1.236 |\n\n\n| Number of Conductors – Total Square Area – XHHW |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| AWG | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |\n| 14 | 0.0139 | .028 | .042 | .056 | .070 | .083 | .097 | .111 | .125 | .139 | .153 | .167 | .181 | .195 | .209 |\n| 12 | 0.0181 | .036 | .054 | .072 | .091 | .109 | .127 | .145 | .163 | .181 | .199 | .217 | .235 | .253 | .272 |\n| 10 | 0.0243 | .049 | .073 |","cbCaieN7yYb4p4rC","https://ap.wps.com/l/cbCaieN7yYb4p4rC","pdf",92505,"English","# Raceway Fill Percentages as per NEC\n## 40% Fill – Over 2 Wires\n## 60% Fill – Nipple\n# Conductor Square Areas\n## Conductor square area by AWG / kcmil (THHN, XHHW)\n## Total square area by number of conductors (THHN)\n## Total square area by number of conductors (XHHW)","[{\"question\":\"What does the “40% Fill – Over 2 Wires” section provide?\",\"answer\":\"It provides NEC-based raceway fill percentages for THHN and XHHW over 2 wires, organized by raceway type and conductor size.\"},{\"question\":\"What does the “60% Fill – Nipple” section provide?\",\"answer\":\"It provides NEC-based raceway fill percentages for THHN and XHHW for nipple applications, again organized by raceway type and conductor size.\"},{\"question\":\"How are “Conductor Square Areas” and “Total Square Area” tables used?\",\"answer\":\"They supply conductor square area values for THHN and XHHW by AWG/kcmil, and totals by the number of conductors, supporting conduit sizing and fill calculations.\"}]","Conduit Fill Calculator - NEC Raceway Fill Percentages for THHN & XHHW | PDF"]