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Steel trunking Series 130, Series 170 and Series 210
Tel
01424 856600
Fax
01424 856611
Technical Hotline
+44 (0) 1424 856688
270 |
Steel perimeter trunking systems
Technical information
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.
Internal coupling/bonding set
• Put coupling sleeve (B) halfway into
already installed trunking base or
fabricated fitting.
• Slide next section of base on to
sleeve and fix base in position.
• Push serrated edge coupler
component plate firmly into bottom
of trunking/fitting base (A)
overlapping base joint equally both
side to make a good bond.
• Ensure that coupling sleeve (B) is
pushed tightly 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 UKO1085 between
adjacent boxes.
Dividing fillet
Cut to length between boxes and
bends.Clip into ‘C’ rail.
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 (RSSB1/2 only). Cover lengths
are determined so that ends are
covered by a fitting or accessory. Every
cover must have at least one pair of
side grippers to ensure earth continuity
i.e. cover length must be at least 50mm
with side grippers in the middle.
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.
Screening
Steel containment protects internal
circuits from external electromagnetic
interference. For internal segregation
and screening, use the steel dividing
fillet 8510066.
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.
• System 210: 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.
B
A
