My 2020 Winnebago oven sparked when a lid on top of stovetop shorted out against a hot plate sitting on top! Got my meter out and tested 12 volts to a known good ground! Found "ground wire" screwed to frame of oven "hot". Cut it off now all good. Lame electricians who built rig- check your oven with meter! 12 volts wont kill you, but will drain battery or cause sparks if shorted out.
