A/C off of 20 amp service?
Has anyone ever heard of a single a/c unit not being able to start and run on a 20amp shore power circuit? We bought a new coach and the dealer says don't run a/c unless connected to a 30 amp servic...
Forum Discussion
dougrainer wrote:Effy wrote:
Yes, I do it all the time. Worst case it will trip a breaker.
Sorry, Worst case is NOT tripping a breaker, but overloading the systems which results in HEAT buildup, which can lead to a FIRE. Your Post is a good example of the misconception of what a 120 breaker REALLY does. A Lot of bad things have happened to people that assume that the 120 breakers stop ALL bad results. I always ask customers, WHY do you think your 30 amp shore cord end is all burnt and pitted? Why is your 30 to 15 amp adapter slightly melted and burnt and pitted? WHY do you think your 50 to 30 Dogbone is Burnt and pitted on the 30 amp end? BECAUSE THEY OVERLOAD THE SYSTEM WHEN NOT CONNECTED TO 50 OR 30 AMP SERVICE. Doug
Sorry, but I've never had that issue. Plugs are fine and clean and not pitted or melted in any way and I run AC off 20A quite frequently at the house with no issue. The cords never even get warm. Maybe my coach is set up to do this better than more sophisticated models with more demand. So, perhaps it's a case by case basis. I do have an extension cord rated for the load and the circuit I use has nothing else on it.
