651 / 759
Technical Hotline
+44 (0)1268 563720
651
CABLE MANAGEMENT
PERIMETER AND
DISTRIBUTION
PREMIER CABLE CAPACITY
TYPE OF
CONDUCTOR SIZE
CABLE
FACTOR
NBT3
(1)
NBT3TC
(3)
NBT3TC
(4)
NBT4
(2)
NBT4TC
(5)
NBT4TC
(6)
Full Term CSA 100% Fill (MM
2
)
1805
384
1383
3230
706
2455
TERM AT 45% FILL (MM
2
)
812
172
622
1453
317
1104
POWER CABLES
NUMBER OF CABLES AT 45% FILL
PVC
stranded
1.5mm
2
8.6
94
20
72
168
36
128
2.5mm
2
12.6
64
13
49
115
25
87
4mm
2
16.6
48
10
37
87
19
66
6mm
2
21.2
38
8
29
68
14
52
DATA CABLES
NUMBER OF CABLES AT 45% FILL (A) AND FULL CAPACITY (B)
A B A B A B A B A B A B
Cat 5E UTP 5.5mm dia.
30.2 26 59 5 12 20 45 48 106 10 23 36 81
Cat 5E STP 6.0mm dia.
36.0 22 50 4 10 17 38 40 89 8 19 30 68
Cat 6 UTP 6.5mm dia.
42.2 19 42 4 9 14 32 34 76 7 16 26 58
Cat 6 STP 7.0mm dia.
49.0 16 36 3 7 12 28 29 65 6 14 22 50
LIST NO.
COMPONENT DIMENSIONS
A
B
C
D
NBT3
240
170
125
125
NBT4
240
170
140
140
Norwich Technical
Components
The four components shown opposite are
fabricated sections and space must be allowed
for inclusion in runs of trunking. All other
components snap on over standard trunking
profiles.
The four components shown below are
fabricated sections and space must be allowed
for inclusion in runs of trunking.
All other components snap on over standard
trunking profiles.
A
B
B
B
FLAT TEE
FLAT ANGLE
C
C
D
D
EXTERNAL CORNER
INTERNAL CORNER
25
100 1
NBT3
40
100 2
NBT4
25
4
3
100
NBT3TC
40
6
5
100
NBT4TC
Note: NBT3 & NBT3TC are not deemed suitable for terminating Cat6 cabling.
Trunking
Dimensions (mm)