8
Requirements of cables
Cables
Requirements of cables
The British Standard
BS 5839 Part 1 : 2013 Code of
practice for system design, installation,
commissioning and maintenance states
the requirements for standard and fi re
resisting cables in Clause 26.2 section d
& e.
“d) Standard fi re resisting cables should
meet PH 30 classifi cation when tested in
accordance with EN50200 and maintain
circuit integrity if exposed to the following
test:
- a sample of the cable is simultaneously
exposed to fl ame at a temperature of
830ºC - 0+40ºC and mechanical shock
for 15min, followed by simultaneous
exposure to water spray and mechanical
shock for a further 15min.
e) Enhanced fi re resisting cables should
meet the PH120 classifi cation when
tested in accordance with EN 50200 and
maintain circuit integrity if exposed to the
following test:
- a single sample of the cable is
simultaneously exposed to fl ame at a
temperature of 930ºC - 0+40ºC and
mechanical shock for a period of 60min,
followed by simultaneous exposure to
water spray and mechanical shock for a
further 60min.”
The cables listed in this manual are
those that have been tested/assessed
for EMC compliance with the system
products.
Mains Supply cable
The mains supply cable must be a
standard fi re resisting type and should
meet PH30 classifi cation, such as
standard or enhanced cable.
Repeat indicator to panel cable
A maximum of 1Km cable distance is
allowed between Control Panel and
Repeat indicator panel
Belden No. 9842 EIA RS485
Applications, O/A
Beldfoil® Braid
having two twisted pairs
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