In cable tray terminology, UC refers to the load classification used to specify the mechanical strength of a tray. It is part of the NEMA VE 1 and CSA standards for metal cable trays, which define load/span ratings for different tray types such as ladder, ventilated, solid bottom, or channel trays . The UC rating indicates the maximum weight per unit length that the tray can safely support when the load is evenly distributed along the tray's span, as opposed to a point load or concentrated load.
A ladder-type cable tray with a UC rating of 50 lb/ft can safely support cables that collectively weigh up to 50 pounds per foot of tray length, provided the load is evenly distributed. If the load is concentrated at a single point, a different rating, often called CC (Concentrated Load), would apply. Understanding UC ratings is essential for proper cable tray selection, safe installation, and compliance with NEC and NEMA standards. It ensures that the tray system can handle the intended cable load without structural failure or safety risks .
What is Cable Tray? In electrical cabling, a cable tray is a metallic structure used to handle insulated electrical power
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Home / Resources / Technical Guide / A Technical Guide to Tray Cable A Technical Guide to Tray Cable Across industry tray cable
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FEATURES Attaches 2" tray to cabinet tops and channel framing. Fold over tabs secure tray without fasteners.
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