Page 867 - Demo

835TECHNICAL DATADATA SUBJECT TO CHANGE WITHOUT NOTICE.Wireway Size and Maximum Number of Conductors Allowed (areas shown are 20% of the full interior cross sectional area of the wireway)Conductor Size AWG-MCMArea of Conductor (sq. in.) 2.5\(0.90 sq.in.) 4.0\(2.63 sq.in.) 6.0\(6.33 sq.in.) 8.0\(11.63 sq.in.) 12.0\(13.1 sq.in.) RHH*, RHW*, RHW-2*, XF, XFF14 0.0209 43 125 302 556 62612 0.0260 34 101 243 447 50310 0.0333 27 78 190 349 3938 0.0556 16 47 113 209 235TW, THW, THHW, THW-2, RHH*, RHW*, RHW-2*6 0.0726 12 36 87 160 1804 0.0973 9 27 65 119 1343 0.1134 7 23 55 102 1152 0.1333 6 19 47 87 981 0.1901 4 13 33 61 681/0 0.2223 4 11 28 52 582/0 0.2624 3 10 24 44 493/0 0.3117 2 8 20 37 424/0 0.3718 2 7 17 31 35250 0.4596 1 5 13 25 28300 0.5281 1 4 11 22 24350 0.5958 1 4 10 19 21400 0.6619 1 3 9 17 19500 0.7901 1 3 8 14 16600 0.9729 0 2 6 11 13700 1.1010 0 2 5 10 11750 1.1652 0 2 5 9 11800 1.2272 0 2 5 9 10900 1.3561 0 1 4 8 91000 1.4784 0 1 4 7 81250 1.8602 0 1 3 6 71500 2.1695 0 1 2 5 61750 2.4773 0 1 2 4 52000 2.7818 0 0 2 4 4TFN, TFFN18 0.0055 163 478 1150 2114 238116 0.0072 125 365 879 1615 1819THHN, THWN, THWN-214 0.0097 92 265 652 1198 135012 0.0133 67 197 475 874 98410 0.0211 42 124 300 551 6208 0.0366 24 71 172 317 3576 0.0507 17 51 124 229 2584 0.0824 10 31 76 141 1583 0.0973 10 27 65 119 1342 0.1158 7 22 54 100 1131 0.1562 5 16 40 74 831/0 0.1855 4 14 34 62 70The 2008 National Electrical Code limits wireways as followsA wireway shall not contain more than 30 current-carrying conductors exept when the ampacity has been adjusted to Table 310-15(b) 2 (a)The sum of the cross sectional area of all conductors shall not exceed 20% of the interior cross sectional area of the wireway. Note section 14 of NTPA 79 allows 50% fill for industrial machine wireway. * Types RHH, RHW, and RHW-2 without outer coveringWIREWAYS FILL TABLES LAY-IN & FEED-THROUGH TYPE 12 (BASED ON THE NATIONAL ELECTRICAL CODE)