hello, can any one advise me. when we have the heater running on mains, and then turn kettle on, the rcd trips out. we found out that the heater and the kettle socket are on the same circuit breaker, and the remaining socket is not with the other sockets. the caravan is a 2007 abbey vogue 460. we have been back to the dealer and we are still waiting for a reply. is this normal. do we have to turn the fire off everytime my husband needs a coffee. thankyou for any info given.