Calculate horizontal, vertical, or compound cable tray offsets based on bend angle, offset distance, and available installation space. Measure this distance along the straight tray. The right cable tray sizing calculator helps engineers turn cable schedules into a verified tray width and fill check before material ordering and site installation. IEC 61537 covers cable tray and cable ladder systems for the support and accommodation of cables, while NEC Article 392 governs cable. us-trations without notice. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent.