Good Morning btbaillie: We never anticipated needing an extension for the 30-footer that came with the BH, but before we got our 5'er home from its maiden 6,000 mile voyage, we used it in two different parks. One in MO and one in AZ. We were fortunate to catch a Camping World sale on when we went in to pick up the extension 50-amp 30-footer. We did encounter a park down in OR where we stopped overnight last fall, and I had to pull out a 100-foot 15-amp cord that I have set up for the BH's idle period in a storage yard. If you don't immediately need the cord, do a little research on finding a sale price, or go down to one of your favorite electrical supply stores and price the parts needed to put one together. Many times, when you find a camping supply vendor running a sale on a 50-amp cord, it's hard to buy the individual parts and put the cord together for some of the camping store sale prices you'll find. Good luck with your first trip, and enjoy that retirement time.....Happy Trails, gebills