RV Repair: electrical / keeps tripping outlet, microwave cause, rv battery

Question
I have a 1994 27ft. Nomad RV, which I just purchased. Everything tested fine when I bought it, but now every time I plug the rv into my house outlet I trip the line. I checked all the fuses ( they seem fine) I tried diff. outlets at my house, and diff. extension cords, nothing helps. The only thing I was using in the camper was a small plug in TV that was working fine, then later that same afternoon the line tripped.
RV battery is working fine ( I have all lights ) but obviously that wont last long without being able to plug in outlet power to recharge. Any help you could offer would really be appreciated.
Thank you,
Patti

Answer
I'm assuming your camper has a 30 amp power cord and you are trying to plug into a regular house outlet which is 15 amps with an adapter.  You still should not trip your house breaker by only running a t.v.  Are you running your A/C by chance or microwave cause if you are yes you will probally trip a 15 amp breaker.  Without doing an amp draw on your main hot line to the camper to see if there is any odd draws or shorts in your system its hard to tell what exactly is your prblem if any at all.  Its hard to solve electrical problems without being there to do a couple of small tests.