[rames14]

Interesting post. We have the newer 50 amp service with our 2005 3400RL. However, our seasonal site only has 30 amp, so we have been using the 30 amp adapter. I finally broke down and purchased the 30 amp pigtail and a 50 ft 30 amp cord. I have not popped the circuit yet despite running a/c, microwave and tv. However, did pop one time with the stereo cranked and the above all running. We enjoy the lighter weight and less space taken up by the 30 amp cord.

Also, when talking about the autoformer, it seems that people are sometimes forgetting to separate current from voltage. Think of it in terms of water - pressure is voltage and flow is current. 30 amp and 50 amp have the same pressure (110 v) but different amounts of flow available. That is why a 30 amp autoformer and 50 amp autoformer do the same with the voltage but you need to consider the current useage. If you have 50 amp service but only carry a 30 amp cord, you will never use the 50 amp current. The reason our 3400RL has 50 amp service is because of the second a/c prep and the washer/dryer prep. We have neither and probably won't have them in the future. Just a little further clarification.

From the sound of it, though, the autoformer also has a protective side - preventing voltage spikes from damaging the electrical system in the trailer.