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Medium Voltage Cables
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Type MC Armored Cables
Aluminum Building Wire
Nada Filipovic
23 June 2025
2026-07-24
Conductor Size (AWG or kcmil) | Ampacity | ||||
|---|---|---|---|---|---|
Direct Buried (Touching) (A)  | Direct Buried (Spaced 7.5 in) (A)  | In Conduit In Air (Touching) (A)  | In Cable Tray (Spaced One Cable Diameter) 5 kV to 15 kV (A)  | In Cable Tray (Spaced One Cable Diameter) 25 kV to 35 kV (A) | |
2 | 205 | 225 | 165 | 215 | --- |
1 | 230 | 260 | 190 | 250 | 250 |
1/0 | 260 | 295 | 215 | 290 | 290 |
2/0 | 295 | 335 | 255 | 335 | 330 |
3/0 | 340 | 380 | 290 | 385 | 380 |
4/0 | 385 | 435 | 330 | 445 | 445 |
250 | 410 | 475 | 365 | 495 | 490 |
350 | 505 | 575 | 440 | 610 | 605 |
500 | 605 | 700 | 535 | 765 | 755 |
750 | 740 | 865 | 655 | 990 | 970 |
1000 | 830 | 1005 | 755 | 1185 | 1160 |
Conductor Size (AWG or kcmil) | Ampacity | ||||
|---|---|---|---|---|---|
Direct Buried (Touching) (A) | Direct Buried (Spaced 7.5 in) (A) | In Conduit In Air (Touching) (A) | In Cable Tray (Spaced One Cable Diameter) 5 kV to 15 kV (A) | In Cable Tray (Spaced One Cable Diameter) 25 kV to 35 kV (A) | |
2023 NEC Article | Article 315.60(F) | Article 315.60(F) | Article 315.60(E) | Article 392.80(B)(2)(2) | Article 392.80(B)(2)(2) |
2023 NEC Table | Table 315.60(C)(19) One Circuit | Table 315.60(C)(15) One Circuit | Table 315.60(C)(7) | Table 315.60(C)(3) | Table 315.60(C)(3) |
Cable Configuration | 2023 NEC Figure 315.60(D)(3), Detail 7 | 2023 NEC Figure 315.60(D)(3), Detail 9 | Touching | Single Layer, Spaced One Cable Diameter | Single Layer, Spaced One Cable Diameter |
Installation Conditions | Earth Ambient = 20 deg C (68 F) Earth Thermal Resistivity = 0.90 deg C m / W Depth of Burial = 36 in | Earth Ambient = 20 deg C (68 F) Earth Thermal Resistivity = 0.90 deg C m / W Depth of Burial = 36 in | Ambient Air = 40 deg C (104F) | Ambient Air = 40 deg C (104 F) | Ambient Air = 40 deg C (104 F) |
