Recently had my TT w/ 15K A/C plugged into my garage outlet. I used the 30amp cord and an extension 30amp that I carry in case the campground power box is not within reach. This combo plugged into the small 30 to 15 plug adapters most of us carry. Made sure nothing else in the garage was on the circuit, batteries charged, no power to W/H, refer in TT was on AUTO. Ran fine. I did opt to have an electrician install a 30a RV plug right next to my panel so now I have a dedicated circuit for the TT. Cost me $120 for install and I think it was a good investment.
Rockwood Windjammer 3002W (11/10/2011)
2011 Sierra Denali HD - Duramax/Allison
2006 Yukon Denali