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TECHNICAL DATAWIREWAYS FILL TABLES LAY-IN & FEED-THROUGH TYPE 12 (BASED ON THE NATIONAL ELECTRICAL CODE)834exmweb.com | 1-800-363-2423 | [email protected] 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.) RFH-2 , FFH-2 18 0.0145 62 162 436 802 90316 0.0172 52 152 368 676 761RHH, RHW, RHW-214 0.0293 30 89 216 396 44712 0.0353 25 74 179 329 37110 0.0437 20 55 133 266 2998 0.0835 10 31 75 139 1566 0.1041 8 25 60 111 1254 0.1333 6 19 47 87 983 0.1521 5 17 41 76 862 0.1750 5 15 36 66 741 0.2660 3 9 23 43 491/0 0.3039 2 8 20 38 432/0 0.3505 2 7 18 33 373/0 0.4072 2 6 15 28 324/0 0.4754 1 5 13 24 27250 0.6291 1 4 10 18 20300 0.7088 1 3 8 16 18350 0.7870 1 3 8 14 16400 0.8626 1 3 7 13 15500 1.0082 0 2 6 11 12600 1.2135 0 2 5 9 10700 1.3561 0 1 4 8 9750 1.4272 0 1 4 8 9800 1.4957 0 1 4 7 8900 1.6377 0 1 3 7 71000 1.7719 0 1 3 6 71250 2.3479 0 1 2 4 51500 2.6938 0 0 2 4 41750 3.0357 0 0 2 3 42000 3.3719 0 0 1 3 3SF-2, SFF-218 0.0115 78 228 550 1011 113916 0.0139 64 189 455 836 94214 0.0172 52 152 368 676 761SF-1, SFF-118 0.0065 138 404 973 1789 2015RFH-1, XF, XFF18 0.0080 112 328 791 1453 1637TF, TFF, XF, XFF16 0.0109 82 241 580 1066 1201TW,XF, XFF, THHW, THW, THW-214 0.0139 64 189 455 836 942TW, THHW, THW, THW-212 0.0181 49 145 349 642 72310 0.0243 37 108 260 478 5398 0.0437 20 60 144 266 299