Feeder Cable Slot Details And Backfilling - Siemens BH17 7ER Installation Manual

The feeder cable is supplied with 1.5 mm
may be manufactured with or without steel wire armour to meet customer
specification. The referred types are 1 or 2 pair non-armoured cables with 1.5
2
mm conductors and an orange coloured outer covering. Armoured cable, also
orange coloured and with 1.5 mm
joint between loop tails and feeder cable is made in the road, or where ducts
do not protect cables.
It is most important that the 2 cores of each pair are identified and correctly
connected. With 2 pair Quad cable, opposite cores always form a pair. (Red is
opposite blue and yellow is opposite black). With 3 and 4 pair cable the pairs
are twisted and it is not possible to identify pairs by colours alone.
The feeder must be joined to the loop ends using crimp connectors encased
in an appropriate joint box. The crimp connectors must be suitable for joining
2
1.5 mm / 2.5 mm
stranded loop conductors.
The feeder cable codes are as follows:
1 pair
2 pairs
The following 2.5 mm
for completeness:
1 pair
2 pairs
3 pairs
4 pairs
2.8

Feeder Cable Slot Details and Backfilling

Feeder cable slots will be cut in the surface of the roadway using a motor
driven saw.
Slots must be cut at least 2 mm wider than the cable being installed and deep
enough to allow 65 mm of cover.
The minimum slot widths are as follows:
1 pair
2 pairs
1 pair
2 pairs
3 pairs
4 pairs
667/HE/20663/000
2
solid copper feeder cable conductors to 1.5 mm
2
1.5 mm Plain cable
998/4/85263/900
998/4/85263/901
2
cables are no longer recommended but are listed here
2
2.5 mm Plain cable
667/4/03082/900
667/4/03082/901
667/4/03082/902
667/4/03082/903
2
1.5 mm plain cable
10mm
12mm
2
2.5 mm plain cable
12mm
14mm
18mm
20mm
Issue 13
2 2
or 2.5 mm
2
conductors, is recommended where the
2
1.5 mm Armoured cable
998/4/85263/000
998/4/85263/001
2
2.5 mm Armoured cable
667/4/03082/000
667/4/03082/001
667/4/03082/002
667/4/03082/003
2
1.5 mm armoured cable
14mm
16mm
2
2.5 mm armoured cable
16mm
18mm
22mm
24mm
L D H
OOP ETECTOR ANDBOOK
copper conductors and
2
/ 2.5 mm
2
Page 17