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60 Amp Junction Box.

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Mornin' All,

                      I came upon a burnt out terminal on a Crabtree ceiling 50 Amp. shower cord switch yesterday. The cables had become so hot after 3 years of use that the line P.V.C. had completely fallen off the conductor and had left a horrible black smelly sticky mess.


I had to replace the shower cord switch, but the damaged cable was then too short after removing the softened copper and damaged insulation.


So I had to make a trap in the room upstairs, which turned out to be wooden boards over other wooden boards to access the cable below with a view to lengthening one cable. I used a new 60 Amp junction box as it allows two large conductors to overlap and be secured by 4 screws. It is solid and of good quality.


It is this item.....

https://www.toolstation.com/60a-junction-box/p98775?store=N2&utm_source=googleshopping&utm_medium=feed&utm_campaign=googleshoppingfeed&gclid=EAIaIQobChMIufLP1ZD25gIVybTtCh2YWAeiEAQYASABEgJZkvD_BwE


Z.
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    I would consider crimps on a 40 Amp shower circuit cable a "no no." The 4 screw per terminal 60 Amp junction box that I used is much much better.

     





    Then why did I, in my previous role, crimp quite a lot of cables up to 185mm CSA, with the full support of the DNO who had contracted us?

    You are wrong, I think crimps would be the better option compared to screw terminals, which can come loose, however hard you screw them up.


    My current role involves a lot of domestic properties. We have, on average, one shower switch burnt out per week due to loose terminals. I have 2 other very experienced sparkies with me. We all make sure the terminals are as tight as we can get them, yet there are still failures from loose terminals that we know we have tightened properly when we installed them.

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  • 0

     



    I would consider crimps on a 40 Amp shower circuit cable a "no no." The 4 screw per terminal 60 Amp junction box that I used is much much better.

     





    Then why did I, in my previous role, crimp quite a lot of cables up to 185mm CSA, with the full support of the DNO who had contracted us?

    You are wrong, I think crimps would be the better option compared to screw terminals, which can come loose, however hard you screw them up.


    My current role involves a lot of domestic properties. We have, on average, one shower switch burnt out per week due to loose terminals. I have 2 other very experienced sparkies with me. We all make sure the terminals are as tight as we can get them, yet there are still failures from loose terminals that we know we have tightened properly when we installed them.

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