Cable Trays* — A maximum of two 24 in. (31 mm) deep (or smaller) open-ladder cable tray with channel-shaped side rails formed of min 0. (25 mm) channel shape rungs spaced. In practice, cable tray dimensions are a system of interrelated measurements —width, depth, length, and material thickness—that directly affect cable fill compliance, heat dissipation, structural loading, and long-term expandability. Non-standard lengths are also available upon request. Standard widths are 150 mm. Specialized/Sigma Factory for Steel Products (SFSP) was first established in KSA in 1989 and has been expanding ever since through a variety of products and through its geographical presence. Cable trays offer continuous support of cables, are lightweight, quick and straight forward to install just about anywhere, and generally mean that changing cabling. Cable trays and busways at floor level or at slab penetrations shall have a waterstop no less than 50 mm in height.
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