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Which bits of domestic wiring does BS 7671 cover?

AJJewsbury
As BS 7671 has been gradually extending its scope over the years, so we're now just about at the point that it covers any electrical installation that isn't specifically covered by another (BS?) standard (to paraphrase section 110) - and specifically mentions communication, signalling and control fixed wiring. So I'm trying to figure out what standards apply to what:


A few examples:
  • Power and lighting - yes, I'm happy that's just BS 7671.

  • Phone cabling - comes under BS 6701 that seems clear enough (maybe in addition to BS 7671, but there's room for deviation from BS 7671 demands all the same)

  • ELV intruder alarm wiring - I've come across BS EN 50131 series but can't tell (without paying a fortune) whether that covers just individual components or also acts as an installation standard - anyone know?

  • Fixed speaker wiring (say from a wall or ceiling speaker to 4mm sockets/binding posts on the wall behind the hifi)

  • UHF co-ax (i.e. TV aerial/satellite)

  • LV control wiring for CH systems (I'm guessing this is BS 7671 although every EICR I see seems to suggest otherwise)

  • Likewise similar wiring - e.g. pump/valves for solar thermal systems, air-con or heatpumps.

  • ELV heating control wiring (e.g. from 12V 'network' type room 'stats to underfloor heating manifold controllers)

  • Structured cabling (CAT 5 kind of thing) - usually done to TIA/EIA-568 - am I right in thinking that BS EN 50173 is equivalent?


Anyone know of some standards that would apply to these instead of (or in addition to) BS 7671? Or on paper at least, should I be looking to find sheathed speaker cables, IP2X binding posts and a suitable 30mA RCD for when they're concealed in the wall (as far as I can tell the amplifier isn't a SELV source), intruder alarm contacts that don't rely on the timber door frame to complete the enclosure, or co-ax that complies with BS 5467, 6724, 7846, 8436 or 60702-1? ?


   - Andy.
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    AJJewsbury:

    As BS 7671 has been gradually extending its scope over the years, so we're now just about at the point that it covers any electrical installation that isn't specifically covered by another (BS?) standard (to paraphrase section 110) - and specifically mentions communication, signalling and control fixed wiring. So I'm trying to figure out what standards apply to what:


    A few examples:




    All of the below, see 110.1.3 for further details.




    • Power and lighting - yes, I'm happy that's just BS 7671.


    Well, not quite, BS 7671 + BS 5266 and BS EN 1838 for emergency lighting


    • Phone cabling - comes under BS 6701 that seems clear enough (maybe in addition to BS 7671, but there's room for deviation from BS 7671 demands all the same)


    BS 6701 reinforces or augments BS 7671 requirements. There are no "conflicts". BS 6701 actually refers to BS 7671 as a requirement.


    • ELV intruder alarm wiring - I've come across BS EN 50131 series but can't tell (without paying a fortune) whether that covers just individual components or also acts as an installation standard - anyone know?


    A bit of both, but the general cabling is ICT cabling and BS 6701 (and the standards it references) covers that oo.


    • Fixed speaker wiring (say from a wall or ceiling speaker to 4mm sockets/binding posts on the wall behind the hifi)


    BS 7671 alone really. The equipment is covered by BS EN 62368-1 (which replaces BS EN 60065).


    • UHF co-ax (i.e. TV aerial/satellite)


    BS 7671 + BS EN 60728-11 + BS 6701 (as it's ICT cabling). Whilst this is not listed specifically in Regulation 110.1.3 of BS 7671, BS EN 60728-11 refers specifically to IEC 60364-series of standards (which are implemented in the UK as BS 7671).


    • LV control wiring for CH systems (I'm guessing this is BS 7671 although every EICR I see seems to suggest otherwise)


    BS 7671 + standards referenced from BS 6701 (as it's ICT cabling)


    • Likewise similar wiring - e.g. pump/valves for solar thermal systems, air-con or heatpumps.


    Likewise.


    • ELV heating control wiring (e.g. from 12V 'network' type room 'stats to underfloor heating manifold controllers)


    And again.


    • Structured cabling (CAT 5 kind of thing) - usually done to TIA/EIA-568 - am I right in thinking that BS EN 50173 is equivalent?


    This is definitely covered by BS 7671 + BS 6701.

    Anyone know of some standards that would apply to these instead of (or in addition to) BS 7671? Or on paper at least, should I be looking to find sheathed speaker cables, IP2X binding posts and a suitable 30mA RCD for when they're concealed in the wall (as far as I can tell the amplifier isn't a SELV source), intruder alarm contacts that don't rely on the timber door frame to complete the enclosure, or co-ax that complies with BS 5467, 6724, 7846, 8436 or 60702-1? ?


       - Andy.

     






    I feel your pain on the RCD issue, I have raised this a number of times ... but a good question that everyone appears happy to ignore. The intruder alarm contacts will comply with a relevant standard. Perhaps more tricky may well be whether the panel is providing SELV/PELV or not, especially when BS EN 62368-1 takes over from BS EN 60950-1 and BS EN 60065, as the new standard has completely abandoned the concept of SELV and PELV !!!

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  • 0

    AJJewsbury:

    As BS 7671 has been gradually extending its scope over the years, so we're now just about at the point that it covers any electrical installation that isn't specifically covered by another (BS?) standard (to paraphrase section 110) - and specifically mentions communication, signalling and control fixed wiring. So I'm trying to figure out what standards apply to what:


    A few examples:




    All of the below, see 110.1.3 for further details.




    • Power and lighting - yes, I'm happy that's just BS 7671.


    Well, not quite, BS 7671 + BS 5266 and BS EN 1838 for emergency lighting


    • Phone cabling - comes under BS 6701 that seems clear enough (maybe in addition to BS 7671, but there's room for deviation from BS 7671 demands all the same)


    BS 6701 reinforces or augments BS 7671 requirements. There are no "conflicts". BS 6701 actually refers to BS 7671 as a requirement.


    • ELV intruder alarm wiring - I've come across BS EN 50131 series but can't tell (without paying a fortune) whether that covers just individual components or also acts as an installation standard - anyone know?


    A bit of both, but the general cabling is ICT cabling and BS 6701 (and the standards it references) covers that oo.


    • Fixed speaker wiring (say from a wall or ceiling speaker to 4mm sockets/binding posts on the wall behind the hifi)


    BS 7671 alone really. The equipment is covered by BS EN 62368-1 (which replaces BS EN 60065).


    • UHF co-ax (i.e. TV aerial/satellite)


    BS 7671 + BS EN 60728-11 + BS 6701 (as it's ICT cabling). Whilst this is not listed specifically in Regulation 110.1.3 of BS 7671, BS EN 60728-11 refers specifically to IEC 60364-series of standards (which are implemented in the UK as BS 7671).


    • LV control wiring for CH systems (I'm guessing this is BS 7671 although every EICR I see seems to suggest otherwise)


    BS 7671 + standards referenced from BS 6701 (as it's ICT cabling)


    • Likewise similar wiring - e.g. pump/valves for solar thermal systems, air-con or heatpumps.


    Likewise.


    • ELV heating control wiring (e.g. from 12V 'network' type room 'stats to underfloor heating manifold controllers)


    And again.


    • Structured cabling (CAT 5 kind of thing) - usually done to TIA/EIA-568 - am I right in thinking that BS EN 50173 is equivalent?


    This is definitely covered by BS 7671 + BS 6701.

    Anyone know of some standards that would apply to these instead of (or in addition to) BS 7671? Or on paper at least, should I be looking to find sheathed speaker cables, IP2X binding posts and a suitable 30mA RCD for when they're concealed in the wall (as far as I can tell the amplifier isn't a SELV source), intruder alarm contacts that don't rely on the timber door frame to complete the enclosure, or co-ax that complies with BS 5467, 6724, 7846, 8436 or 60702-1? ?


       - Andy.

     






    I feel your pain on the RCD issue, I have raised this a number of times ... but a good question that everyone appears happy to ignore. The intruder alarm contacts will comply with a relevant standard. Perhaps more tricky may well be whether the panel is providing SELV/PELV or not, especially when BS EN 62368-1 takes over from BS EN 60950-1 and BS EN 60065, as the new standard has completely abandoned the concept of SELV and PELV !!!

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