![]()
Tel
01424 856600
Fax
01424 856611
Technical Hotline
+44 (0) 1424 856688
264 |
Aluminium perimeter trunking systems
Technical information
Material
Aluminium trunking is manufactured
from high precision extruded
aluminium with a powder coat finish.
White RAL 9016
Silver Grey RAL 9006
Installation
Positioning
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 Ø6mm 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 diameter
fine tungsten blade (90/108tpi). This
will produce an edge requiring
minimal de-burring.
• Consecutive lengths of base are
aligned and butt jointed together.
Earthing
• Clean protective coating from base,
covers and metallic fittings and then
earth bond.
• Incoming earth connection is made
using LTB1 bonding assembly
installed in the earth channel of the
base.
• Bonding base to base: in final ring or
radial 32Amp circuits, bonding strap
LBS1 can be used.
• Bonding covers and end caps to
base: use bonding strap LBS2.
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
• Moulded from colour matching
polycarbonate.
• Internal and external bends must be
mitred at 45° to ensure total
enclosure and segregation of
trunking compartments, including
any internal fitted segregator.
• Straight lengths should be butt
jointed together.
• Flat angles and tees are prefabricated
in aluminium.
• Cutting of base and covers is not
critical as external moulded clip-on
fittings cover the joint and overlap
covers by 10mm each side to cover
minor inaccuracies.
Bend radius control
Contact the Technical Team on 01424
856688
Accessory boxes
• For mounting an accessory box in the
alternative compartment to supply,
drill the main web adjacent to the
box position.
• Remove the appropriate knock out
and clip the box into the trunking
base.
• For boxes in the same compartment
as the supply, remove the
appropriate box knock-outs and clip
the box into trunking base.
• When boxes are installed
consecutively, a 14mm wide spacer
(ES1) is required to cover the space
between the boxes.
• Part M box assemblies with
contrasting coloured faceplates are
available to meet the requirements of
DDA regulations for Visual
Impairment.
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,
the LTL1 cover is butt-joined to the
edge of the box. Cut edges of the
cover are subsequently concealed by
the accessory. For fittings, a gap of
25mm is left between the two cover
ends to permit the fitting to clip to
base.
Covers – removal
To remove a cover, first detach a
coupler, internal or external bend
component to gain access. The main
cover can then be gently eased off the
base. To remove the outer cover, firstly
ease from the base by inserting the
blade of a terminal screwdriver
between the captive legs of the cover
and the base and then ease away from
the base.
Screening
Aluminium containment will protect all
internal circuits from external
electromagnetic interference. For
internal segregation and screening, use
a screened dividing fillet.
Method of continuation through a
partitionwall
Continue the main lateral run of base
through the partition wall.Fit short
lengths of cover where the trunking
passes through the partition. The
partition wall trunking is then butted
up to the main run and the joint
covered by an internal bend fitting.
5mm +
FLOOR
COVERING
DRILL HOLE OF
SUITABLE SIZE
INSERT SCREWDRIVER
INTO SHADED AREA
LEVER OUT
PARTITION WALL
COVERS TO BE FITTED
BEFORE BASE IS INSTALLED
X
100mm
100mm
X
Sterling Profile aluminium
X
100mm
100mm
X
100mm
167mm
167mm
167mm
167mm
