Tables > Conduit and Tubing > Conductors > Max conductors in liquid-tight flexible metallic conduit

	Type Letters Cond. Size AWG/kcmil Trade Sizes In Inches .50 .75 1 1.25 1.50 2 2.50 3 3.50 4 RH 14 6 10 16 29 38 62 93 143 186 243   12 5 8 13 23 30 50 75 115 149 195 RHH, RHW, RHW-2 14 4 7 12 21 27 44 66 102 133 173   12 3 6 10 17 22 36 55 84 110 144 RH, RHH, RHW, RHW-2 10 3 5 8 14 18 29 44 68 89 116   8 1 2 4 7 9 15 23 36 46 61   6 1 1 3 6 7 12 18 28 37 48   4 1 1 2 4 6 9 14 22 29 38   3 1 1 1 4 5 8 13 19 25 33   2 1 1 1 3 4 7 11 17 22 29   1 0 1 1 1 3 6 7 11 14 19   1/0 0 1 1 1 2 5 6 10 13 16   2/0 0 1 1 1 1 4 5 8 11 14   3/0 0 0 1 1 1 3 4 7 9 12   4/0 0 0 1 1 1 2 4 6 8 10   250 0 0 0 1 1 1 3 4 6 8   300 0 0 0 1 1 1 2 4 5 7   350 0 0 0 1 1 1 2 3 5 6   400 0 0 0 1 1 1 1 3 4 6   500 0 0 0 1 1 1 1 3 4 5   600 0 0 0 0 1 1 1 2 3 4   700 0 0 0 0 0 1 1 1 3 3   750 0 0 0 0 0 1 1 1 2 3 TW 14 9 15 25 44 57 93 140 215 280 365   12 7 12 19 33 43 71 108 165 215 280   10 5 9 14 25 32 53 80 123 160 209   8 3 5 8 14 18 29 44 68 89 116 RHH*, RHW*, RHW-2*, THHW, THW, THW-2 14 6 10 16 29 38 62 93 143 186 243 RHH*, RHW*, RHW-2*, THHW, THW 12 5 8 13 23 30 50 75 115 149 195   10 3 6 10 18 23 39 58 89 117 152 RHH*, RHW*, RHW-2*, THHW, THW, THW-2 8 1 4 6 11 14 23 35 53 70 91 RHH*, RHW*, RHW-2*, TW, THW, THHW, THW-2 6 1 3 5 8 11 18 27 41 53 70   4 1 1 3 6 8 13 20 30 40 52   3 1 1 3 5 7 11 17 26 34 44   2 1 1 2 4 6 9 14 22 29 38   1 1 1 1 3 4 7 10 15 20 26   1/0 0 1 1 2 3 6 8 13 17 23   2/0 0 1 1 2 3 5 7 11 15 19   3/0 0 1 1 1 2 4 6 9 12 16   4/0 0 0 1 1 1 3 5 8 10 13   250 0 0 1 1 1 3 4 6 8 11   300 0 0 1 1 1 2 3 5 7 9   350 0 0 0 1 1 1 3 5 6 8   400 0 0 0 1 1 1 3 4 6 7   500 0 0 0 1 1 1 2 3 5 6   600 0 0 0 1 1 1 1 3 4 5   700 0 0 0 0 1 1 1 2 3 4   750 0 0 0 0 1 1 1 2 3 4 THHN, THWN, THWN-2 14 13 22 36 63 81 133 201 308 401 523   12 9 16 26 46 59 97 146 225 292 381   10 6 10 16 29 37 61 92 141 184 240   8 3 6 9 16 21 35 53 81 106 138   6 2 4 7 12 15 25 38 59 76 100   4 1 2 4 7 9 15 23 36 47 61   3 1 1 3 6 8 13 20 30 40 52   2 1 1 3 5 7 11 17 26 33 44   1 1 1 1 4 5 8 12 19 25 32   1/0 1 1 1 3 4 7 10 16 21 27   2/0 0 1 1 2 3 6 8 13 17 23   3/0 0 1 1 1 3 5 7 11 14 19   4/0 0 1 1 1 2 4 6 9 12 15   250 0 0 1 1 1 3 5 7 10 12   300 0 0 1 1 1 3 4 6 8 11   350 0 0 1 1 1 2 3 5 7 9   400 0 0 0 1 1 1 3 5 6 8   500 0 0 0 1 1 1 2 4 5 7   600 0 0 0 1 1 1 1 3 4 6   700 0 0 0 1 1 1 1 3 4 5   750 0 0 0 0 1 1 1 3 3 5 FEP, FEPB, PFA, PFAH, TFE 14 12 21 35 61 79 129 195 299 389 507   12 9 15 25 44 57 94 142 218 284 370   10 6 11 18 32 41 68 102 156 203 266   8 3 6 10 18 23 39 58 89 117 152   6 2 4 7 13 17 27 41 64 83 108   4 1 3 5 9 12 19 29 44 58 75   3 1 2 4 7 10 16 24 37 48 63   2 1 1 3 6 8 13 20 30 40 52 PFA, PFAH, TFE 1 1 1 2 4 5 9 14 21 28 36 PFA, PFAH, TFE, Z 1/0 1 1 1 3 4 7 11 18 23 30   2/0 1 1 1 3 4 6 9 14 19 25   3/0 0 1 1 2 3 5 8 12 16 20   4/0 0 1 1 1 2 4 6 10 13 17 Z 14 20 26 42 73 95 156 235 360 469 611   12 14 18 30 52 67 111 167 255 332 434   10 8 11 18 32 41 68 102 156 203 266   8 5 7 11 20 26 43 64 99 129 168   6 4 5 8 14 18 30 45 69 90 118   4 2 3 5 9 12 20 31 48 62 81   3 2 2 4 7 9 15 23 35 45 59   2 1 1 3 6 7 12 19 29 38 49   1 1 1 2 5 6 10 15 23 30 40 XHH, XHHW, XHHW-2, ZW 14 9 15 25 44 57 93 140 215 280 365   12 7 12 19 33 43 71 108 165 215 280   10 5 9 14 25 32 53 80 123 160 209   8 3 5 8 14 18 29 44 68 89 116   6 1 3 6 10 13 22 33 50 66 86   4 1 2 4 7 9 16 24 36 48 62   3 1 1 3 6 8 13 20 31 40 52   2 1 1 3 5 7 11 17 26 34 44 XHH, XHHW, XHHW-2 1 1 1 1 4 5 8 12 19 25 33   1/0 1 1 1 3 4 7 10 16 21 28   2/0 0 1 1 2 3 6 9 13 17 23   3/0 0 1 1 1 3 5 7 11 14 19   4/0 0 1 1 1 2 4 6 9 12 16   250 0 0 1 1 1 3 5 7 10 13   300 0 0 1 1 1 3 4 6 8 11   350 0 0 1 1 1 2 3 5 7 10   400 0 0 0 1 1 1 3 5 6 8   500 0 0 0 1 1 1 2 4 5 7   600 0 0 0 1 1 1 1 3 4 6   700 0 0 0 1 1 1 1 3 4 5   750 0 0 0 0 1 1 1 3 3 5
Reprinted with permission from NFPA 70-1999, the National Electrical Code®, Copyright 1998, National Fire Protection Association, Quincy, MA 02269. This reprinted material is not the referenced subject which is represented only by the Standard in its entirety.
See also Calculations Solving for Head when Pressure in PSI, Specific Gravity are known Guides Conductor sizing and ampacities for insulated conductors rated 0-2000 Volts in raceway, cable, or direct buried Parallel Conductor sizing and ampacities for insulated conductors rated 0-2000 Volts in raceway, cable, or direct buried Tables Maximum number of conductors in flexible metallic conduit Maximum number of conductors in rigid metallic conduit Definitions Volume Of Liquid In A Tank Offset Bend