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 channelsupports
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 systems
A light structural support system usually consisting of steel channel section (strut), steel brackets, channel nuts and set screws Note: channel support systems comply with BS 6946
Coefficient of linear expansion
The change in length per unit length per unit rise in temperature 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
Electromagnetic compatibility
A system’s ability to neither radiate nor conduct electromagnetic energy in such a manner as to cause unwanted effects
Equipotential bonding
Electrical connection maintaining various exposed-conductive-parts and 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 pointSafe working pull out load
The maximum allowable load on a channel nut connection when 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 (safe working load)
Maximum load that can be applied safely in normal use
UDL (Uniformly Distributed Load)
Load applied evenly over a given areaContinue reading: General packing and handling
