Second what Dono said. Have to high tap an EM bought to a show.
It is not uncommon for the line voltage at a pinball show at a big exhibition hall to drop well under 110 V when all the machines are active. I've measured as little as 107 V coming out of the line chords before, but most of the time it is somewhere between 110-114v and you need to high tap or the game will play really poorly.