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TECHNICAL INFORMATION
Technical information
Material
Aluminium trunking is manufactured
from high precision extruded
aluminium with a powder coat finish.
White RAL 9016
Silver Grey RAL 9006
Accessory boxes are supplied in PVC-U
or polycarbonate both of which are
100% recyclable.
Installation
Positioning
Bench and desk installations: a single
run can be fitted to rear of furniture
or, if run down centre line, two units
can be joined back to back presenting
accessories on both sides.
Fitting
• Secure trunking base in one plane
only every 500mm by drilling
alternative Ø6mm holes either side of
divider nib.
• Secure using No 8 round head screws
and washers. 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.
Earthing
• Base, covers and metallic fittings to
be cleaned of protective and powder
coatings and earth bonded.
• 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 cover to
base use LBS2
Joints and bends
• Base joints should be butt jointed
together.
• Internal and external bends are
prefabricated in aluminium, aligned
and butt jointed together so cutting
of base and covers has to be very
accurate to produce a good finish.
Bend radius control
Contact the Technical Team on
+44 (0)1424 856688
Accessory boxes
• Remove the appropriate box
knockout that align with segregated
compartment containing supply
cable and clip the box into the
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 (ESSB1/2 only). Cut
edges of the cover are concealed by
the accessory. Adjoining covers are
butt-jointed.
Covers – removal
To remove a cover, first detach an
accessory to gain access. The main
cover can then be gently eased off the
base.
Screening
Aluminium containment protects
internal circuits from external
electromagnetic interference. For
internal segregation and screening, use
a screened dividing fillet.
Dimensions
Bench trunking – with box
1 = 1345mm
2
total area
1 = 605mm
2
45% space factor
2 = 2188mm
2
total area
2 = 984mm
2
45% space factor
3 = 1345mm
2
total area
3 = 605mm
2
45% space factor
Bench trunking – No box
1 = 1842mm
2
total area
1 = 828mm
2
45% space factor
2 = 3342mm
2
total area
2 = 1504mm
2
45% space factor
3 = 1842mm
2
total area
3 = 828mm
2
45% space factor
Cable capacities
• All calculations allow for
a 45% space factor.
As there can be differences between
data cable sizes, Marshall-Tufflex
recommend that cable dimensions
are confirmedwith themanufacturing
company.
Cable capacity chart
Compartment 1 Compartment 2 Compartment 3
No box With box No box With box No box With box
PVC power cable
1.5mm² stranded copper
104
76
188
123
104
76
PVC power cable
2.5mm² stranded copper
70
51
126
83
70
51
PVC power cable
4.0mm² stranded copper
50
36
91
59
50
36
Data cable: Ø5.5mm
35
25
63
41
35
25
Data cable: Ø6.0mm
29
21
53
35
29
21
Data cable: Ø6.5mm
26
19
47
31
26
19
Data cable: Ø7.0mm
22
16
39
26
22
16
Data cable: Ø8.4mm
15
11
27
18
15
11
Only for straight runs. If bends are required please contact the Technical Team on +44 (0)1424 856688.
500mm
500mm
OPTION 1; BACK ONLY
OPTION 2; BASE ONLY
Bench trunking aluminium
p181
Product
Information
C. &C.MarshallLtd.
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Aluminium trunking systems
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