The Regs and motor caravans

[milliamp]

Hi guys,
I am sure there must be some caravanners amongst the sparkies and other well informed of you out there.
The regs indicate motor caravans (and caravans) should have overcurrent protection which disconnects all live conductors in their installations. All of the 'vans I have seen recently have an RCD and single pole MCB's, is there something I have overlooked or do the manufacturers have a different set of rules?
The question is posed because I have been asked to install some circuits in a friends camper van.

Thanks for any advice.

 

[Spark123]

It depends which standard the installation is to, BS7671 then you'll need to use DP devices.
regs from other countries will probably be different.