On 16 Dec, 09:51, Adrian wrote:
Dave Osborne gurgled happily, sounding much like
they were saying:

I'm thinking of building in one of those Lidl battery chargers in the
old car. So it can be left on float when not in use. The mains lead on
those is only two core and the case plastic. I was considering a
Buccaneer weather proof mains connector mounted in the body below the
rear bumper. Should the car body be connected to mains earth?
No. If the battery charger is double insulated, then the only issue is
preventing the chassis becoming live from a fault on the mains cable.
Cover the mains lead in plastic conduit and ensure that it can't chafe
or snag on anything. Make sure you plug in to an RCD-protected supply.

Or do it the other way round, and plug the low-voltage into the car,
keeping the charger.

Motorbike Optimate-style.

The extra-low voltage option would be by far the safest solution. If
you really do want to put a 230v mains supply into the car then use a
3 core flex with a trailing socket and a 3 pin mains rated connector
at the car end. Earth the car via the earth pin of the connector.
Also use a supply with 30mA RCD protection (which all sockets rated at
less than 20A, intended to supply equipment for use out of doors
should have for additional personal protection in the event of a fault)