Does an electric crepe maker require a hood and ventilation?
Doubtful (assuming we're talking about something along the lines of this, if its some kind of commercial unit doing 10 at a time, get a hood).  

Crepes don't typically output enough fumes or smoke of any kind in quantity and an electric crepe maker should be even better on that front.  There may be a bit of steam, but nothing that should warrant an vent outside.