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https://www.legrand.co.uk/media/4377/beama_tray_and_ladder_best_practice_guide.pdf
6 Cable Ladder and Cable Tray Systems– Including Channel support Systems and other Associated Supports Definitions and Abbreviations Accessory Component used for a supplementary function e.g. to join two components together, clamp or fix to walls, ceilings or other supports, covers and cable retainers Associated supports Bespoke supports for cable tray and cable ladder other than BS 6946 channel
https://www.cablinginstall.com/home/article/16466812/overview-of-support-systems-for-cable-and-equipment
The support system for cabling and equipment is a vital component of a properly designed data-communications system. The acceptance and use of the eia/tia-569 Commercial Building Standard for Telecommunications Pathways and Spaces by architects and engineers has proven the importance of a carefully designed and maintained cable-support system.
http://copecabletray.com/e-document/Cope-Tray-Install-Guide/D592DE22F4A604A49B215C510B602413/Cope_Install_Guide_rev2.pdf
*The cable tray bottom will have openings sufficient for the passage of air and utilize 75 percent or less of the plan area of the surface to support cables. The maximum dis-tance between cable support surfaces shall not exceed 100 mm (4”) in the direction parallel to the cable tray side rails.
https://www.cabletrays.org/faq/
Cable trays support cable the way that roadway bridges support traffic. A bridge is a structure that provides safe passage for traffic across open spans. Cable tray is the bridge that allows for safe transport of wires across open spans. Therefore, think of cable tray as the structural component of a building’s electrical system
https://www.voltimum.co.uk/articles/cable-support-distances
Cable supports should be applied either side of the bend. For flexible systems, where the cable is not directly fixed to the support system, for example a J-hanger installation, calculations need to be undertaken to determine the required distance between the cable support positions to achieve a set deflection/off-set.
https://www.whyprysmian.co.uk/cable-support-spacing.html
Oct 30, 2017 · Cable supports should be applied either side of the bend. Flexible Systems For flexible systems, where the cable is not directly fixed to the support system, for example a J-hanger installation, calculations need to be undertaken to determine the required distance between the cable support positions to achieve a set deflection/off-set.
http://www.sourceiex.com/Catalogs/Chapter%2014%20Cable%20Support%20Systems.pdf
Cable Support Systems in the International World ... Minimum distance between expansion couplers 58 m Constants Expansion of steel per increased ºC: 0.0173 mm/m ... Support of cable tray and ladder is typically done in the same fashion as US installations but generally has fewer restrictions as to …
https://www.osha.gov/dts/shib/shib011609.html
This is an extreme limit and the cable tray will appear to be over half full due to voids between the cables or conductors. Another consideration for cable tray fill is not to overload the cable tray or its support system beyond their ratings.
http://www.cooperindustries.com/content/dam/public/bline/Resources/Library/catalogs/fasteners_and_fixing/spring_steel_fasteners_NA/NECRequirements.pdf
distance cannot be maintained, the cable or raceway shall be protected from penetration by screws or nails by a steel plate or bushing, at least 1.6 mm (1/16in.) ... Support wires that do not provide secure support shall not be permitted as the sole support.
https://www.cabletrays.org/codes-and-standards/
NEMA VE 1 – This standard specifies the manufacturing requirements for metal cable trays (such as; channel cable tray, ladder cable tray, single-rail cable tray, wire mesh cable tray, solid bottom or nonventillated cable tray and trough or ventilated cable tray) and associated fittings for use in accordance with the rules of the National Electrical Code.
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