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PME earthing to a group of static caravans TT earth required?

LittlePlumb
Can anyone give me there valuable opinions on earthing to a static-mobile home please. As per BS7671, PME earthing is not allowed to (mobile) caravans. However, does a static caravan (plumbed in and permanent with a SWA cable supplying it and no plug/socket arrangement) count as a caravan. The Static caravan is metal framed, and placed some distance from the PME source 40m or so, and the cable size is 16mm CSA 3 core, so PME (100A single phase) could be exported on the cable as its greater than 10mm CSA,

The static caravan is permanent and not quite the same as a transportable caravan, so does a TT earth need to be installed?
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  • 0
    Immediate kneejerk response is ... definitely needs an earth rod per caravan (metal frame WILL be introducing true earth)... and the requirements for TT seem less onerous in this example?
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  • 0
    Immediate kneejerk response is ... definitely needs an earth rod per caravan (metal frame WILL be introducing true earth)... and the requirements for TT seem less onerous in this example?
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