Forum Discussion
westend
Mar 10, 2014Explorer
If you have two Interstate grp 27 with 96 AH/pc and wish to keep to the Golden Rule of 50% drawn, you'll need to replenish 96 AH each day. Two 120W modules or one 235w module will get you into the range. You may have to size somewhat bigger because of the insolation at 66 Lat.. I don't think you're going to be using 96AH/day. Your daily use is where you should start with sizing solar.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,330 PostsLatest Activity: Oct 30, 2025