re: "I found that GE doesn't offer information about its power needs on their site. Current draw is a component of energy use and a common specification of electrical appliances,"
no spoon feeding on a silver platter, I'm afraid.
Household appliances aren't usually sold to, or marketed for, the RV market.
When it comes to appliances, the usual ratings are in watts. Current is only typical in low voltage DC stuff. One of the major sources of 'difficulties' I see in RV energy needs planning is due to using inconvenient units.
Yes, a complete system can involve a lot of issues. The point though, was that you can buy that complete system at less or equivalent cost than the usual fare. That puts a strain on considering the options as they aren't so clear anymore.