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5.2
Appendix 2 – Recommended Fire Rated Cables
The following table provides a list of suitable fire rated cables with standard (30 minute) and
enhanced (120 minute) classification. Refer to Document No. 680-088 for an up to date list.
Manufacturer
Cable Type
Core Sizes (mm)
5839-1 Rated
Net
1.0
1.5
2.5
S
(30)
E
(120)
AEI
Firetec Multicore Ref. F1C
AEI
Firetec Armoured Ref. F1C
Calflex Calflam
CWZ
Cavicel SpA
Firecel SR/114H
Cavicel SpA
Firecel SR/114E
Draka
Firetuf (OHLS) FTZ
Draka Firetuf
PLUS
Huber & Suhner
Radox FRBS/M1x2
Irish Driver-Harris Co Ltd
Kilflam 2000
Irish Driver-Harris Co Ltd
Kilflam 3000
Pirelli FP200
Flex
Pirelli FP200
Gold
Pirelli
FP PLUS
Tratos Cavi SpA
FIRE-safe TW950
Tyco Thermal Controls
Mineral Insulated Twin Twisted PYRO-E CCM2T
Tyco Thermal Controls
Pyrotenax Served Mineral Insulated Cable (light
and heavy duty)
Tyco Thermal Control
Pyro-S
Wrexham
Mineral Insulated Cable (light and heavy duty)
5.2.1 Detector
Loop
Lengths
– Apollo, Hochiki and AV
16
With the above cables, loops can be up to 2Km in length. However, care must be taken when
designing the system to take into account the maximum loop loading. The voltage drop (load
current x cable resistance) over the cable always needs to be taken into account to ensure the
devices receive an adequate supply voltage. The following table gives recommendations for a loop.
(It may be possible to extend the lengths where the devices are distributed evenly – refer to the
device data sheets and Loop Calculators for further information on calculating loop loading, cable
cross sectional area and loop distance).
Maximum Circuit
Impedance
72
Ω
Circuit
Loading
Max. Circuit
Impedance
Loop Cable Distance (M)
1.0mm
2
1.5mm
2
2.5mm
2
Maximum Capacitance
(Core-Core)
230nF
100mA
55.0
Ω
1500 2000 2000
Maximum Capacitance
(Core-Screen)
410nF
200mA
27.5
Ω
760 1130 1860
Insulation Resistance
(Core-Core and Core-
Screen)
>2M
Ω
300mA
18.3
Ω
500 750 1200
NB: Maximum Circuit Impedence is the sum
of the resistance of both cable conductors.
400mA
13.7
Ω
380 560 920
500mA
11.0
Ω
300 450 740
16
See Nittan addendum for maximum line lengths with the Nittan protocol
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