4-1 Single Speed Wiring (for ES-1500)
Using a wire nut, tie the black wire on the 2 wire Romex from the fan to the red wire on the timer.
Using a wire nut, tie the bare copper wires together with the green ground wire on the timer.
Using a wire nut, tie the white common wires from the Romex to the white common wire on the timer.
Re-attach the ground screw and wire to the handy box. Cut your green ground wire in