Vibrant93 wrote:
dougrainer wrote:
BOTH 120 Breakers are supposed to be ON all the time. When you have 30 amp service and a 5kw Genset, that bottom 20 amp breaker is dedicated to the 2nd AC compressor. When on 30 amp shore power, there is a Energy Management system that monitors the AMP draw on Shore Power and if you have available amps will allow BOTH AC compressors to run. Some Model Motorhomes do not have an EMS system, but do have a switch that allows you to turn on the 2nd compressor as they expect you to manage your AC amperage. This type system is usually more than 15 years or older. On RV's(30 amp) that have 2 roof top AC units, the same applies. The 20 amp breaker is dedicated to the Rear AC unit and usually there will be a Front/Rear AC switch inside the RV to switch between the Front and Rear AC when on Shore Power. Doug
If you don't have the owners manual click this link
https://winnebagoind.com/resources/manuals/pdfs/Operator2000/00Suncruiser.pdf
Thanks all for the responses. This makes a lot more sense now. I'm really angry that Itasca didn't put a 50 amp service in this coach. We do have an EMS system that shed's power and anytime we are on shore power and are running the air it sheds once that 2nd compressor kicks in. I'm excited to flip this switch and see what happens when on generator power. I'm guessing we'll have colder air when it's 90* and humid OR we'll find out that the 2nd compressor is frozen!
30 amp service was the standard until the 2007 model year. 50 amp was available as an extra cost option from about 2000. As I remember the option on our 2001 Adventurer cost around $300.00.
Keep in mind at the time your coach was new there were very few RV parks that had 50 amp service. When we ordered our 2001 Adventurer the sales person was a bit surprised we wanted the 50 amp service. He said a recent publication by the industry indicated there were less than 15% of parks with 50 amp service. He also made sure we had a 30 amp adaptor to avoid problems.
I'll bet we didn't use the 50 amp service more than half a dozen times in the first 3 years we had the motorhome. It wasn't available most places and was an extra charge in parks that had it.
Fast forward another 3 years and the majority of parks had 50 amp service. It was still an extra cost at all but the higher end parks. Now it's standard at almost every RV park and all the state parks in our area.