Electrical systems 240V Mains Test & Operation Campervan Caravan and MotorhomeRemember that camping on site using a 230V electricity supply within campers requires even more care than in the home. Because your unit is mobile there is a greater likelihood of things going wrong with an electrical installation than with the fixed installation within your house. It is therefore important you make sure your cables and equipment are maintained in good condition by simple checks every time you use them, by regular inspections by a