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Splitting up a 3 phase area???

Tomgunn
Hi everyone,


There are some 21 'open' areas and each 'area' doesn't have a door... each 'area', (about 10ft x 10ft x 20), has to have 4 DSO and a cooker supply / outlet. 


The problem is, as there are so many 'open' areas, (without any doors'), the 3 phase has to be 'balanced', (as we know), and each phase would be broken into about 7 areas, ie; 1 phase for 7 'areas / 'units'. That's simple enough BUT, as there aren't any doors' to these 'areas' / units I'm concerned about someone running, (unlikely but possible), a lead from one 'unit' to another thereby one 'area' would then have 415v in it. 


How could you protect this from happening / alternative wiring? There isn't a bus-bar anywhere and really all of the 21 'units' couldn't be put on the same phase. I don't know what the incoming fuse rating is yet. Has anyone done something similar??


I haven't worked out the amount of amps, per unit, yet but, with some 21 cooker outlets and some 80 odd DSO's it just wouldn't be possible to all go on one phase.


Any ideas welcomed!!


Cheers, Tom

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  • 0
    OMS:

    We don't worry about this anymore, Tom - we haven't for quite some time


    Worst case might be a couple of labels, but even that isn't necessary as the voltage to earth isn't going to exceed 250V under any conditions.


    If someone is so hard of thinking as to get the covers of two sockets on different phases and stick a wet finger into each of them, then tough luck.


    Balance loads across the three phases for sure, but phase disposition within a facility is broadly a thing of olden days


    Crack on, it's not just Brexit that needs paying for, we've got CV-19 to deal with as well.


    Regards


    OMS





     


    Hello OMS,


    Thanks for your reply too! ALWAYS supportive with the 'crack on', hahaha!! Luv' it!!


    Yep, I'm always the worrier!! Great advise and always a great read!


    Oh yes, Brexit and CV-19... hope everyone, on here, are coping!! Good luck to you all!


    Regards...


    Tom


Reply
  • 0
    OMS:

    We don't worry about this anymore, Tom - we haven't for quite some time


    Worst case might be a couple of labels, but even that isn't necessary as the voltage to earth isn't going to exceed 250V under any conditions.


    If someone is so hard of thinking as to get the covers of two sockets on different phases and stick a wet finger into each of them, then tough luck.


    Balance loads across the three phases for sure, but phase disposition within a facility is broadly a thing of olden days


    Crack on, it's not just Brexit that needs paying for, we've got CV-19 to deal with as well.


    Regards


    OMS





     


    Hello OMS,


    Thanks for your reply too! ALWAYS supportive with the 'crack on', hahaha!! Luv' it!!


    Yep, I'm always the worrier!! Great advise and always a great read!


    Oh yes, Brexit and CV-19... hope everyone, on here, are coping!! Good luck to you all!


    Regards...


    Tom


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