10
Steel trunking Series 130 and Series 170
Single lengths
Where it is required to fit a single length
of trunking (under 3 metres) between
two inside walls and no accessory box
is fitted, it is advisable to install a coupler
in the centre of the run to facilitate the
removal of the cover.
Joints and bends
•
Base joints should be aligned and butt
jointed together.
•
Internal and external bends, flat angles
and tees are prefabricated in steel,
aligned and butt jointed to the base
using coupling bonding sets.
•
Clip-on external tolerance sleeve
overlaps the joints to cover minor
inaccuracies.
Screening
Steel containment protects internal
circuits from external electromagnetic
interference. For internal segregation
and screening, use the steel dividing
fillet 351189.
Internal coupling/bonding set
•
Comprises of two identical parts.
•
Insert both parts into end of one
length of trunking. Slide next section
of base onto couplers and fix into
position.
Accessory boxes
Standard depth 40mm
Remove the appropriate box knockout
and clip each side of the box into the
trunking base.
When boxes are installed consecutively,
use cover spacer WG01085 between
adjacent boxes.
Dividing fillet
Dividing fillet 351189 is supplied in 1
metre lengths. It is held in place through
using the universal multi-purpose clip. A
minimum of 3 clips are required to hold
2 lengths of the dividing fillet in place.
The trunking can be divided into up to 3
compartments using the dividing fillet.
Please refer to element 3 of the diagram
on page 5.
Covers
Covers are designed to limit
unauthorised removal and to remain in
position during normal conditions
irrespective of impact and minor
undulations of the mounting surface.
Covers – fitting
Covers are clipped into place from front.
If accessory boxes are installed, covers
are butt-joined to the edge of the box
(RSSB10WH end RSSB20WH). Cover
lengths are determined so that ends are
covered by a fitting or accessory.
External bends and flat angles should
be fitted with the correct bend/flat
angle cover.
Covers – removal
To remove a cover, first detach an
external joint cover or accessory to gain
access. The main cover can then be
gently eased off the base.
Material
Steel trunking is manufactured from pre-
galvanised steel with a powder coat
finish to RAL 9010.
Installation
Positioning
•
System 130: suitable for dado
installation.
•
System 170: suitable for dado and
skirting installation.
When used as a skirting system,
sufficient clearance should be allowed
between the floor covering and the
profile fittings that clip over the cover i.e.
5mm + floor covering is recommended.
Fitting
•
Secure trunking base every 750mm.
•
Secure using No 8 round head screws
and washers using the grooves in the
outer compartments of the base to
facilitate drilling 6mm holes.
•
Avoid over-tightening to permit
thermal movement.
•
The use of plastic caps over screw
heads is recommended to protect
installed cables.
•
To cut the trunking, use a fine tooth
blade (32/36tpi) or, preferably,a
circular saw with a 350mm fine
tungsten blade (90/108tpi). This will
produce an edge requiring minimal
de-burring.
•
Consecutive lengths of base are
aligned and butt jointed together using
the coupling/bonding set.
Earthing
•
Trunking base, main fittings and
accessories are fitted with earth
connections.
•
Bonding base to fittings: use
coupling/bonding set or wire between
fitted earth connections.
•
Bonding base to cover: covers have
pressed out side grippers which
automatically establish earth contact
when pressed into trunking base.
•
Bonding base to end caps: use
bonding strap LBS3.
Technical Information
