Also note that caravan supplies require individual 30mA RCD protection that opens all live poles (including N) - so no relying on a SP RCBO or shared RCCB back at the CU.
The sockets are now required to be interlocked - beware of the older style hookup boxes or simple BS EN 60309 sockets.
For underground cables BS 7671 recommends a minimum depth of 600mm in the pitch area unless provided with additional mechanical protection and 6m height for overheads in areas subject to vehicle movement.
Also note that caravan supplies require individual 30mA RCD protection that opens all live poles (including N) - so no relying on a SP RCBO or shared RCCB back at the CU.
The sockets are now required to be interlocked - beware of the older style hookup boxes or simple BS EN 60309 sockets.
For underground cables BS 7671 recommends a minimum depth of 600mm in the pitch area unless provided with additional mechanical protection and 6m height for overheads in areas subject to vehicle movement.
