My caravan is wired very simply; 12v feed to battery, 12v feed to fridge and an earth for each. No relays, no fuss. I have used an old 12S socket and bridged pins 3+7 (earths) and 4+6 (4 from battery, 6 to fridge) with 17A cable. The effect of this is that I can run the fridge off the caravan battery during a short ferry crossing or when parked up for a meal. I have tested it whilst using the hookup at home, and the fridge got cold fairly quickly.
Here is my question. Does the fridge have two elements, one for 12v and one for 240v? If so, I suspect it would be better to cool the fridge before a trip by using the hookup, my funny 12S socket and 12v source. But if it has only one element then 240v would do the same job. Does anyone know? It is a basic Dometic.
I know I can't expect too much from a leisure battery compared to the charging output from the car, but I am hoping that every little helps.
Here is my question. Does the fridge have two elements, one for 12v and one for 240v? If so, I suspect it would be better to cool the fridge before a trip by using the hookup, my funny 12S socket and 12v source. But if it has only one element then 240v would do the same job. Does anyone know? It is a basic Dometic.
I know I can't expect too much from a leisure battery compared to the charging output from the car, but I am hoping that every little helps.