Trays carry the weight of cables over long periods. Additional stress comes from vibration caused by nearby equipment, machinery, or wind. In industrial plants or near heavy machinery, standard supports often fail due to harmonic resonance or bolt loosening. Trays covered in dust, dirt, or chemical residues age faster because contaminants trap moisture or react with. Cable sag results from incorrect spacing of cable tray supports or from employing the incorrect tray type that is, light-duty perforated trays in high-load applications. Consequences: Sagging causes tension at connection. due to a thin, continuous natural oxide film (alumina) that protects ies aluminum alloys (Aluminum Association designation) to manufacture cable tray. This guide discusses common cable tray problems, from loosening and corrosion to grounding issues and installation errors, along.
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