Maintenance free Junction Box

Discussion in 'Electricians' Talk' started by Three Phazed, Aug 15, 2019.

  1. Three Phazed

    Three Phazed New Member

    Morning all.

    Does anyone know of a maintenance free jb that can be used to connect SWA to T&E? I have looked but am struggling to find one. This may be because the gland is non compatible with the requirements but it may be that I just haven't found it yet. Thanks.
     
  2. Mike58

    Mike58 Active Member

    Use a ConnexBox product. They make the "WagoBox" and wiothin the range is an IP68 rated capsule which are designed to be buried in soil &c so should be MF - check with them.
    https://www.connexbox.com/shop/wago...capsule-ip68-adaptable-junction-box-grey.html

    Then use a gland https://www.connexbox.com/ip-68-corrosion-guard-swa-gland-11-16mm-1366.html or https://www.connexbox.com/shop/ip-66-cw20.html

    With other entires using standard compression glands: https://www.connexbox.com/shop/cable-glands

    Add Wago connectors and there you are.
     
    longboat likes this.
  3. Bob Rathbone

    Bob Rathbone Well-Known Member

    You don't say if it is to be buried. My route would be to use crimp connectors on the live conductors and with the SWA, bunch them into a suitably sized crimp connector along with the CPC of the twin and earth. Wago's might be OK for the live conductors but its the SWA causing issues as most methods involve the use of a mechanical clamp. Take a look at a resin filled underground joint, they fulfil the criteria.
     
  4. Bogle Crag

    Bogle Crag Active Member

    If its connecting to T&E I doubt it is buried, for an indoor connection I would use a galv adaptable box and wagos, what size cable are you talking about?
     
  5. Three Phazed

    Three Phazed New Member

    Hi all, sorry for the delay getting back, work got in the way...:)
    Thanks for taking the time to reply and suggest options.

    The cable size is 1.5mm sq. The joint will be from the T&E switch drop to the SWA cable going to the external duct. The idea was to site the box inside under the floor as I did not want to have an external box on show. Will have a look at the connex box, to see if its viable.

    Resin box at a push, though I have not seen it used for T&E before.

    Once again thanks for your help.
     
  6. Three Phazed

    Three Phazed New Member

    In order to update on this mornings query, I spoke to the manufacturer of the Connex box this morning. Whilst it offers a IP68 rating, it does not meet the requirements of being classified as maintenance free. It is great idea, and at least I now know what to use at the other end of the cable now.

    For the T&E to SWA I will go with the resin joint, as long as I can seal the opening with a suitable Bush it should be fine. Thanks for your help.
     
  7. Mike58

    Mike58 Active Member

    An interesting comment from them - did they say why?

    The normal Wago Box and WagoLight are MF when used with the appropriate connectors.
     
  8. Three Phazed

    Three Phazed New Member

    They said the box was designed for external use to provide a IP rated junction box for garden lighting applications. It was not designed to be maintenance free and so had not classified as such.

    Have the resin kit now, so will be busy this weekend. Thanks all who suggested solutions.
     
  9. Mike58

    Mike58 Active Member

    But they say it can be buried under tarmac (with suitable precautions for heavy loads) - surely that would need to be MF. I will have to investigate further.
     
  10. Tony Goddard

    Tony Goddard Active Member

    Just use a Pratley underground box, MF connectors, fill with resin, job done
     
  11. Bogle Crag

    Bogle Crag Active Member

    Why bother with expensive JBs and resin when it is located inside
     
  12. Tony Goddard

    Tony Goddard Active Member

    Apologies, I missed the point about it being indoors!!, yes, absolutely a simple gavanised through box and wagos or crimps inside, easy and cheap!
     
  13. Bogle Crag

    Bogle Crag Active Member

    Thats me all over..easy & cheap;)
     
  14. Mike58

    Mike58 Active Member

    And that is NOT classsed as MF.
     
  15. Bogle Crag

    Bogle Crag Active Member

    Earlier you said to use Wagos, why the about turn
     
  16. Tony Goddard

    Tony Goddard Active Member

    No reason a BESA box cannot satisfy BS5733 for maintenance free provided that the cables are clamped correctly to prevent movement (SWA gland on one side and bar clamp gland or stuffing gland on the other side plus importantly MF rated connectors such as Wago or Ideal Splice Line.
     
  17. Mike58

    Mike58 Active Member

    And WAGO connectors are only MF when in an approved box - READ THEIR WEBSITE. They cannot be put in any box of choosing, but one that they agree with.
     
  18. Tony Goddard

    Tony Goddard Active Member

    Blimey calm down, The British Standard is very clear on the requirements for maintenance free and so long as those requirements are met then there is no issue, several manufacturers of galvanised BESA boxes list their product as compliant when used with appropriate connectors and glands. Wago can make whatever specification they like to try and force you to buy their boxes, but the connectors themselves have to pass the standards approval on their own merit. You are not tied to Wago, there are several other makes and types of connectors that are approved for maintenance free connections, if various products are put together in a design which complies with the standard and are all individually tested to that standard or other stated standards then there is no problem.
     
    Bogle Crag likes this.
  19. Mike58

    Mike58 Active Member

    Wago do not make boxes they only state their connectors must be in boxes they approve/accept.
     
  20. Tony Goddard

    Tony Goddard Active Member

    The do make a line of boxes, the well known and very good WAGOBOX, however these are not suitable to terminate an SWA as they do not have the facility (20mm knockout or female thread) to take a gland

    http://www.wago.ltd.uk/enclosures/wagobox/

    You could potentially adapt a WAGOBOX XL by drilling the side to take an SWA gland and earth it with a P nut
     

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