EMT：Electrical Metallic Tubing
（American Standard Electrical Metallic Tubing) Standard: ANSI C.80.3 and UL797
| Size | Diameter | Length Without Coupling (mm.) |
Wall Thickness |
Min. Acceptable Weight |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inside Dia. | Outside Dia. | ||||||||||
| Inch. | mm. | Inch. | mm. | Inch. | mm. | ft. | mm. | Inch. | mm. | lbs./ft. | kgs./m. |
| 1/2″ | 15 | 0.622 | 15.80 | 0.706 | 17.93 | 10 | 3050 | 0.042 | 1.07 | 0.285 | 0.424 |
| 3/4″ | 20 | 0.824 | 20.93 | 0.922 | 23.42 | 10 | 3050 | 0.049 | 1.25 | 0.435 | 0.647 |
| 1″ | 25 | 1.049 | 26.64 | 1.163 | 29.54 | 10 | 3050 | 0.057 | 1.45 | 0.640 | 0.952 |
| 1 1/4″ | 32 | 1.380 | 35.05 | 1.510 | 38.35 | 10 | 3050 | 0.065 | 1.65 | 0.950 | 1.414 |
| 1 1/2″ | 40 | 1.610 | 40.89 | 1.740 | 44.20 | 10 | 3050 | 0.065 | 1.65 | 1.100 | 1.637 |
| 2″ | 50 | 2.067 | 52.50 | 2.197 | 55.80 | 10 | 3050 | 0.065 | 1.65 | 1.400 | 2.083 |
IMC：Intermediate Metal Conduit
（American Standard Intermediate Metal Conduit) Standard: ANSI C.80.6 and UL1242
| Size | Outside Diameter Nominal(mm.) |
Length Without Coupling (mm.) |
Wall Thickness (mm.) |
Min. Weight of 10 Unit Length with Coupling (kgs.) |
|
|---|---|---|---|---|---|
| Inch. | mm. | ||||
| 1/2″ | 15 | 20.7 | 3030 | 1.79 | 25.4 |
| 3/4″ | 20 | 26.1 | 3030 | 1.9 | 34.6 |
| 1″ | 25 | 32.8 | 3025 | 2.16 | 49.9 |
| 1 1/4″ | 32 | 41.6 | 3025 | 2.16 | 64.3 |
| 1 1/2″ | 40 | 47.8 | 3025 | 2.29 | 79.1 |
| 2″ | 50 | 59.9 | 3025 | 2.41 | 105.2 |
| 2 1/2″ | 65 | 72.6 | 3010 | 3.56 | 186.2 |
| 3″ | 80 | 88.3 | 3010 | 3.56 | 229.0 |
| 3 1/2″ | 90 | 100.9 | 3005 | 3.56 | 263.0 |
| 4″ | 100 | 113.4 | 3005 | 3.56 | 296.1 |
RSC：Rigid Steel Conduit
（American Standard Rigid Steel Conduit, Zinc Coated) Standard: ANSI C.80.1 and UL6
| Size | Diameter | Nominal Wall Thickness (mm.) |
Length Without Coupling(m.) |
Min. Weight of 10 Unit Length with Coupling (kgs.) |
||
|---|---|---|---|---|---|---|
| Inch. | mm. | Inside Dia. (mm.) | Outside Dia.(mm.) | |||
| 1/2″ | 15 | 16.1 | 21.1 | 2.64 | 3.03 | 35.85 |
| 3/4″ | 20 | 21.2 | 26.7 | 2.72 | 3.03 | 47.63 |
| 1″ | 25 | 27.0 | 33.4 | 3.20 | 3.02 | 69.40 |
| 1 1/4″ | 32 | 35.4 | 42.2 | 3.38 | 3.02 | 91.17 |
| 1 1/2″ | 40 | 41.2 | 48.3 | 3.51 | 3.02 | 112.96 |
| 2″ | 50 | 52.9 | 60.3 | 3.71 | 3.02 | 150.60 |
| 2 1/2″ | 65 | 63.2 | 73.0 | 4.90 | 3.01 | 239.05 |
| 3″ | 80 | 78.5 | 88.9 | 5.21 | 3.01 | 309.63 |
| 3 1/2″ | 90 | 90.7 | 101.6 | 5.46 | 3.00 | 376.94 |
| 4″ | 100 | 102.9 | 114.3 | 5.72 | 3.00 | 441.04 |
| 5″ | 125 | 128.9 | 141.3 | 6.22 | 3.00 | 595.85 |
| 6″ | 150 | 154.8 | 168.3 | 6.76 | 3.00 | 791.67 |
LFMC：Liquidtight Flexible Metal Conduit EF Interlocked
| Size (Inch.) | Inner Diameter |
Outside Diameter |
PVC Jacket Thickness (mm.) |
Min. Bending Radius (mm.) |
Length of Each Roll |
||||
|---|---|---|---|---|---|---|---|---|---|
| Min (mm.) | Max (mm.) | Min (mm.) | Max (mm.) | Min (mm.) | Max (mm.) | (ft.) | (m.) | ||
| 1/2″ | 15.70 | 16.30 | 20.80 | 21.30 | 1.00 | 1.35 | 70 | 200 | 60 |
| 3/4″ | 20.70 | 21.30 | 26.00 | 26.70 | 1.10 | 1.55 | 100 | 100 | 30 |
| 1″ | 26.20 | 26.90 | 32.70 | 33.40 | 1.70 | 1.95 | 180 | 100 | 30 |
| 1 1/4″ | 35.10 | 35.70 | 41.50 | 42.20 | 1.25 | 1.70 | 200 | 50 | 15 |
| 1 1/2″ | 40.20 | 40.80 | 47.40 | 48.30 | 1.80 | 2.30 | 250 | 50 | 15 |
| 2″ | 51.00 | 51.80 | 59.40 | 60.30 | 2.40 | 2.80 | 450 | 50 | 15 |
| 2 1/2″ | 62.50 | 64.00 | 72.10 | 73.00 | 2.00 | 2.50 | 550 | 25 | 7.5 |
| 3″ | 77.60 | 78.80 | 87.70 | 88.90 | 2.50 | 3.20 | 800 | 25 | 7.5 |
| 4″ | 101.10 | 102.50 | 113.20 | 114.30 | 2.80 | 3.03 | 1200 | 25 | 7.5 |
FMC: Flexible Metal Conduit Squarelocked
| Size | Inner Diameter | Outdoor Diameter | Length of Each Roll | ||
|---|---|---|---|---|---|
| (Inch.) | Min(mm.) | Max(mm.) | Min(mm.) | Max(mm.) | |
| 1/2″ | 12.20 | 12.80 | 15.00 | 15.80 | 50 |
| 3/4″ | 18.60 | 19.50 | 21.50 | 22.50 | 50 |
| 1″ | 24.60 | 25.60 | 28.00 | 28.80 | 30 |
| 1 1/4″ | 31.50 | 32.30 | 36.60 | 38.00 | 15 |
| 1 1/2″ | 37.80 | 38.50 | 41.60 | 43.00 | 15 |
| 2″ | 49.80 | 50.60 | 55.20 | 56.20 | 15 |
| 2 1/2″ | 62.50 | 63.50 | 69.40 | 70.80 | 10 |
| 3″ | 75.50 | 76.50 | 82.50 | 83.80 | 10 |
| 4″ | 101.50 | 102.50 | 108.00 | 19.10 | 10 |
