![]() ![]() Correctly calculated data and adherence to the design limits of the cables being installed with respect to tensions, sidewall pressures, and minimum bending radii increases the probability for a successful installation. Cable installed in tray is subject to many of the same considerations as cable being installed in conduit systems. It is incumbent that pre-planning of an orderly sequence of events takes place to ensure that a successful installation occurs within recognized limits. Designers and installers are continually faced with difficult challenges in the layout and installation of cable in tray. Accompanying this increase is the need for larger and longer cables to be installed. Discussed are the installation in tray of single and multi-conductor insulated cables with design limitations, example calculations, equipment, and equipment usage and its limitations.įor over thirty years, the use of a ladder-type tray as a rigid structural system for support of cables has grown dramatically. With this growth in the use of tray, it is increasingly important that the tray and cable be installed within industry recognized practices. These raceways are being more heavily loaded with increasing number and size of cables being installed. ![]() The use of ladder-type trays as raceways for insulated cables is becoming more prevalent. ![]()
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