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Caravan Park

Grobbyman
I have to replace 6 pitch boxes on a touring van caravan  site.

So six pitch boxes with 4 van hookup points per box, each hookup point protected by a 10A 30mA RCCB.

Unfortunately I've also discovered that the site is wired as a ring in 6mm SWA, buried direct in ground.


Any thoughts on max fuse size to protect a 6mm ring?


Regards

George
Parents
  • 0
    Caught me out with your second post there.


    The original device rating is the 100A mains fuse.


    The first box is fed, via a 30mA RCD and 3core 25mm SWA to the first box on the ring, it then goes off in 6mm.


    Bit of a lash up. 


    There is a 100mA S type at the origin but the park owners decided to change the 100mA  S type in the feeder box to 30mA so their guests could reset the trip when and as necessary.


    Feeder box with no lid, Incoming and outgoing single insulated SWA cores running up to and from the RCD, that kind of thing.


    Not too worried that a 63A fuse in the feeder box would go as it's unlikely that all pitches will be in use at the same time (even during the height of summer).


    George 



Reply
  • 0
    Caught me out with your second post there.


    The original device rating is the 100A mains fuse.


    The first box is fed, via a 30mA RCD and 3core 25mm SWA to the first box on the ring, it then goes off in 6mm.


    Bit of a lash up. 


    There is a 100mA S type at the origin but the park owners decided to change the 100mA  S type in the feeder box to 30mA so their guests could reset the trip when and as necessary.


    Feeder box with no lid, Incoming and outgoing single insulated SWA cores running up to and from the RCD, that kind of thing.


    Not too worried that a 63A fuse in the feeder box would go as it's unlikely that all pitches will be in use at the same time (even during the height of summer).


    George 



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