Best Practice Guide to Cable Ladder and Cable Tray Systems - Channel Support Systems and other Associated Support

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Best Practice Guide to Cable Ladder and Cable Tray Systems - Channel Support Systems and other Associated Support


We explain Cable Management definitions and abbreviations that manufacturers such as Unistrut, Marco, Flexicon, Legrand, Cablofil and Pemsa use……


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 supports 

Cable cleats Used within an electrical installation to restrain cables in a manner that can withstand the forces they generate, including those generated during a short circuit. 

Cable ladder System component used for cable support consisting of supporting side members, fixed to each other by means of rungs 

Cable ladder system Assembly of cable supports consisting of cable ladder lengths and other system components 

Cable ties Is a type of fastener, especially used for binding and organising several cables or wires together or to a cable management system 

Cable tray System component used for cable support consisting of a base with integrated side members or a base connected to side members Note: cable tray includes perforated tray and wire mesh 

Cable tray system Assembly of cable supports consisting of cable tray lengths and other system components 


Channel support A light structural support system usually consisting of steel channel systems section (strut), steel brackets, channel nuts and set screws Note: channel support systems comply with BS 6946 

Coefficient of linear The change in length per unit length per unit rise in temperature expansion expressed in degrees C-1. 

Competent person Person who possesses sufficient technical knowledge, relevant practical skills and experience for the nature of the work undertaken and is able at all times to prevent danger and, where appropriate, injury to him/herself and others 

Damage With relation to cable management can be represented by broken welds, severely deformed / buckled sections 

Deflection The elastic movement of the section as a result of imposed loading 

Eccentric loads A load imposed on a structural member at some point other than the centroid of the section 

Electrical continuity The ability of a system to conduct electricity within prescribed impedance limits

Cable Ladder and Cable Tray Systems – Including Channel Support Systems and other Associated Supports 8

Electromagnetic A system’s ability to neither radiate nor conduct compatibility electromagnetic energy in such a manner as to cause unwanted effects

Equipotential Electrical connection maintaining various exposed-conductive-parts and bonding extraneous-conductive-parts at substantially the same potential

Fitting System component used to join, change direction, change dimension or terminate cable tray lengths or cable ladder lengths 

Fixings Nuts, bolts, washers etc (Internal fixings are used for connecting system components together as recommended and supplied by the cable support system manufacturer) (External fixings are used for connecting system components to an external structure and are not normally supplied by the cable support system manufacturer)

HDG finish Steel hot dip galvanized after the product is manufactured

Imposed load Any load other than the weight of the structure itself. (Imposed loads can include electrical cables and equipment, wind, ice and snow)

MICC (cable) Mineral insulated copper clad

Non-metallic System which consists of uPVC (Unplasticised Polyvinyl Chloride) or GRP (Glass Reinforced Polymer) 

PG finish Steel pre-galvanized before the product is manufactured

Point load A concentrated load at a single point

Safe working pull The maximum allowable load on a channel nut connection when out load applied perpendicularly to the strut length (BS 6946:1988 Requirements for safe pull out loads – the test failure load shall be a minimum of three times the safe working pull out load)

Safe working slip load The maximum allowable load on a channel nut connection when applied parallel to the strut length (BS 6946:1988 Requirements for safe working slip – the test load required to give continuous slip shall not be less than three times the safe working slip load.) 

Span Distance between the centres of two adjacent support devices 

SWL Maximum load that can be applied safely in normal use (safe working load) 

UDL (Uniformly Load applied evenly over a given area


Our technical team is available to offer more in-depth support if needed, simply contact them on 0121 706 7777 or technical@dpbuildingsystems.co.uk