| Open Bottom |
Power greater than 2000V |
NEC 392.22(A) - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Single Conductor - 1\0 to 4\0 |
NEC 392.22(B)(1)(d) - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Single Conductor - 250 to 1000 kcmil |
NEC 392.22(B)(1)(b) - Sum of the cross-sectional areas of all cables shall not exceed Column 2 of Table 392.22(B)(1). |
| Single Conductor - larger than 1000 kcmil |
NEC 392.22(B)(1)(b) - NEC 392.22(1)(a) - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Multi Conductor - 4\0 or larger |
NEC 392.22(A)(1)(a) - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Multi Conductor - smaller than 4\0 |
NEC 392.22(A)(1)(b) - Sum of the cross-sectional areas of all cables shall not exceed Column 1 of Table 392.22(A)(1) |
| Control and Signal or Data |
NEC 392.22(A)(2) - Sum of the cross-sectional areas of all cables shall not exceed 50% of the cross-sectional area of the tray. |
| Solid Bottom |
Power greater than 2000V |
NEC 392.12 - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Single Conductor - 1\0 to 4\0 |
Not permitted |
| Single Conductor - 250 to 1000 kcmil |
Not permitted |
| Single Conductor - larger than 1000 kcmil |
Not permitted |
| Multi Conductor - 4\0 or larger |
NEC 392.22(A)(3)(a) - Sum of the diameters of all cables shall not exceed the cable tray width. |
| Multi Conductor - smaller than 4\0 |
NEC 392.22(A)(3)(b) - Sum of the cross-sectional areas of all cables shall not exceed Column 3 of Table 392.22(A)(1) |
| Control and Signal or Data |
NEC 392.22(A)(4) - Sum of the cross-sectional areas of all cables shall not exceed 40% of the cross-sectional area of the tray. |
