Chamberlain HD920EV Owner's Manual page 28

Installation
OPTION B
PERMANENT WIRING (Models manufactured after October 2012)
If permanent wiring is required by your local code, refer to the following procedure. To make a
permanent connection through the 7/8 inch hole in the top of the motor unit (according to local
code):
1. Remove the motor unit cover screws and set the cover aside.
2. Remove the attached 3-prong cord.
3. Connect the black (line) wire to the screw on the brass terminal; the white (neutral) wire to the
screw on the silver terminal; and the ground wire to the green ground screw. The opener
must be grounded.
4. Reinstall the cover.
Green
Ground
Screw
Ground
Wire
Ground Tab
Black
Wire
Black
White Wire
Wire
27