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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
    Harry, the point I was making that the 7% failure rate combined with the 95% success rate suggests possible worse case of nearly 12% (11.65%) mortality. Cascading might in theory help reduce this figure a little bit and if you end up being the one relying on it you might appreciate the nuisance trips possibiliity.


    Of course this calculation is made on a purely arithmetical basis without other regards factored in
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  • 0
    Harry, the point I was making that the 7% failure rate combined with the 95% success rate suggests possible worse case of nearly 12% (11.65%) mortality. Cascading might in theory help reduce this figure a little bit and if you end up being the one relying on it you might appreciate the nuisance trips possibiliity.


    Of course this calculation is made on a purely arithmetical basis without other regards factored in
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