Select your tray type (ladder, ventilated trough, solid bottom, or channel), enter the tray width and usable depth, then add cables by size and quantity. The calculator computes the total cable cross-sectional area and compares it against the applicable NEC fill limit. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. For mixed cables, sum the areas of all individual cables.
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