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Burglar/Intruder Alarm Cable

ebee

The thread about colour coding got me thinking.

Not wanting to hijack that thread though.

I was going to waffle on but determined to save you all from that.

So Burglar/Intruder alarms - hardwired not wireless.

We use 6 core alarm cable quite often but in the days before PIRs it was common to use 4 core.

Those having a set colour coding usually picked which colours were for which function and stuck with that.

Those starting their careers when 4 core was common (before PIRs were invented) had a slightly different mindset to those that started on 6 core because PIRs were already in vogue.

Anybody agree/disagree ?

 

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    The relevant standard, as has been pointed out, is BS 4737-3.30:2015 Intruder alarm systems. Specifications for components. Specification for PVC insulated cables for interconnecting wiring

    Clause 6.1.1 confirms there is no accepted standard colour code for the cable itself, and therefore there can be no accepted standard code for the use of the cable:

    6.1.1 General
    The cores shall be distinguishable, for example by colour or striping.
    Conformity shall be checked by visual examination.

    Only the rip-cord cas a confirmed colour-code according to Table 2:

    • Green: LSHF 100 ohms/km per conductor at 20 degrees
    • Red: PVC 100 ohms/km per conductor at 20 degrees
    • Yellow: PVC 155 ohms/km per conductor at 20 degrees


    Cables to the standard should be used for a maximum voltage of 50 V (although the standard does not specify AC or DC I would assume DC given the primary application).

    The Standard includes installation guidelines in Appendix A … and reference is made to BS 7671 as the primary standard. Minimum bend radius = 6 x diameter of cable

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  • 0

    The relevant standard, as has been pointed out, is BS 4737-3.30:2015 Intruder alarm systems. Specifications for components. Specification for PVC insulated cables for interconnecting wiring

    Clause 6.1.1 confirms there is no accepted standard colour code for the cable itself, and therefore there can be no accepted standard code for the use of the cable:

    6.1.1 General
    The cores shall be distinguishable, for example by colour or striping.
    Conformity shall be checked by visual examination.

    Only the rip-cord cas a confirmed colour-code according to Table 2:

    • Green: LSHF 100 ohms/km per conductor at 20 degrees
    • Red: PVC 100 ohms/km per conductor at 20 degrees
    • Yellow: PVC 155 ohms/km per conductor at 20 degrees


    Cables to the standard should be used for a maximum voltage of 50 V (although the standard does not specify AC or DC I would assume DC given the primary application).

    The Standard includes installation guidelines in Appendix A … and reference is made to BS 7671 as the primary standard. Minimum bend radius = 6 x diameter of cable

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