Please help me with 30 amp ??

I am getting really confused.....we have a 25 ft 30 amp power cord that came with the rpod 177 we just purchased. We park the camper under our carport that does not have a power source closer than 40ft away. We plug it in to a an adapter that plugs into a regular 110 extension cord, then into a 110 outlet. When we do this and try to run just the AC in the camper within 2 minutes the breaker trips.....we live in a double wide mobile home and very rarely have a problem with breakers. Any suggestions? Do we need to get a heavy duty extension cord, or maybe a 50 ft 30 amp cord or should there be a different power source that it plugs into? Please keep the answer as simple as possible. I'm getting very frustrated! 

You cannot run you A/c off of the 110 plug. You can only run it when you plug into a 30 amp at a campground or a larger generator.

First question is what is the rating of the breaker that is tripping? 15A or 20A? A 15A breaker by itself is very marginal for the AC. What else is on that breaker? Other outlets, appliances, lights? These items will reduce the current available for the camper. A 20A circuit, used by itself, should handle the AC but not much else.

A "regular" extension cord is usually #16 AWG or #14 AWG. These actually cause the AC to draw more current, thereby tripping the breaker faster. The minimum extension cord should be a heavy duty #12 AWG cord. #10 wire is better if you can find it. Keep it as short as possible.

The ultimate solution would be a properly installed 30 Amp RV outlet wired with #8 wire. You cannot upgrade the existing breaker without rewiring the mobile home.

Originally posted by Leo B You cannot run you A/c off of the 110 plug. You can only run it when you plug into a 30 amp at a campground or a larger generator.

  I do it all the time and have for years with many different campers.  The unit in my 179 draws around 13 amps when running...

Originally posted by Donnat10 Thank you all for the info.  I really like this site. everybody is so helpful. Most of the circuits in the breaker box are 15A. The one I was trying to use was a 15 and has other things on it. There are a few slots open on the breaker panel. I am going to see if a 20A can be put in so we can use if for the camper AC only.  Thanks so much for helping to clarify all this.

A new 20A breaker can be added, but it must be wired separately with #12AWG minimum, #10AWG preferably. #12 would be allowed by code, but #10 would be better. Voltage drop due to small wire is your enemy. You cannot add a 20A breaker and use it with the existing wiring. 

Keep us informed. Good luck and happy camping.