Welcome to the forum.
By "... hooked to electric .." do you mean at your house or 30amp at a campground?
Have you checked the circuit breakers? Were some of them shutoff when you parked it?
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.