VaBene wrote:

We have a horsebox with living accomodation.
On board 240V generator to power lights, 13A sockets, battery chargers etc.
Is there a way that an RCD, or similar device, can be incorporated to
protect any person in case they come into contact with live at any point?
Should both the neutral and earth be wired to the chassis of the vehicle.


If you connect the generator neutral line to the vehicle chassis, your
RCD will act on any shock from the live, it will be fully effective.
Your earth connection is then also the vehicle chassis. This is an IT
system.

Connection to external ground isn't needed if the electrics are
contained wholly within the vehicle. However if leads to the ouside
are used then you do need to earth the vehicle chassis.

PS there's a chance that one side of the gen already connects to
chassis, and it might be the one you're currently treating as 'live.'
If so, grounding the neutral would pop the breaker. If this happens,
ground the other gen output line instead, and make sure your fusing
etc is in what is now the live line.

All this describes the practicalities of portable generator fault /
shock protection rather than being a statement of the full
requirements of the 17th edition, which will be more demanding in your
case.

PPS you'll want a passive RCD, not an active one. If you get the wrong
type you'll have to press the reset button every time you start the
gen to get power.


NT