My electrician (weird old guy, has retired by now) once told me, one customer got these ES-to-outlet adaptors in Portugal and his guys used them for drilling etc in basements without receptacles. This guy also sold ungrounded receptacles and illegal 3way taps for ungrounded receptacles for a pretty long time. (this is where the ungrounded receptacle supplying my cell phone charger, reel-to-reel tape recorder, mini disc walkman, etc came from).