Wiring Diagram For Caravan Battery. If the car battery is flat and you try to start the car a heavy current will be drawn from the caravans leisure battery and would cause the caravan wiring to over heat and possibly cause a fire. Terminal 2 of the car socket should be fed from the ve of the car battery via a fuse and also a relay that only closes when the alternator is charging or when the car ignition in switched on.
It is not recommending which setups are good or bad. Once the batteries equalise out the charge will stop. Circuit tv refrigerator lv and battery charger circuits whilst the 10 or 16 amp mcb should protect the socket outlets used for heavier consumption appliances such as electric kettles toasters hairdryers etc.
In caravans without batteries a large 12v transformer is sometimes fitted to supply 12v dc when the caravan is plugged into 240v mains power.
As part of taking care of your caravan its handy to know that modern caravans can provide self sufficient accommodation off grid via an on board 12 volt leisure battery which will power lighting heating hot water and entertainment systems but only for a limited period. This is primarily based on two factors. Looking for one that sort of shows everything ie from the 240v side to charge the battery to the 12v car plug in to the caravan. In caravans without batteries a large 12v transformer is sometimes fitted to supply 12v dc when the caravan is plugged into 240v mains power.