Power - Chamberlain HD920EV Owner's Manual

Installation
STEP 15 Connect power
To prevent possible SERIOUS INJURY or DEATH from electrocution or fire:
• Be sure power is NOT connected to the opener, and disconnect power to circuit BEFORE
removing cover to establish permanent wiring connection.
• Garage door installation and wiring MUST be in compliance with ALL local electrical and building
codes.
• NEVER use an extension cord, 2-wire adapter, or change plug in any way to make it fit outlet. Be
sure the opener is grounded.
To avoid installation difficulties, do not activate the garage door opener at this time.
To reduce the risk of electric shock, your garage door opener has a grounding type plug with a third
grounding pin. This plug will only fit into a grounding type outlet. If the plug doesn't fit into your outlet,
contact a qualified electrician to install the proper outlet.
THERE ARE TWO OPTIONS FOR CONNECTING POWER:
OPTION A
TYPICAL WIRING
1. Plug in the garage door opener into a grounded outlet.
2. DO NOT run garage door opener at this time.
OPTION B
PERMANENT WIRING (Models manufactured before 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. Be sure power is NOT connected to the opener, and disconnect power to circuit.
2. Remove the garage door opener cover and set aside.
3. Remove the attached green ground terminal.
4. Cut black and white wires and strip away 1/2 inch (1 cm) of insulation, 3 inch (7.5 cm) before
spade terminals.
5. Remove the power cord from opener.
6. Install a conduit or flex cable adapter to the 7/8 inch hole.
7. Run wires through conduit, cut to proper length and strip insulation.
8. Attach with wire nuts provided. Attach the ground wire to the green ground screw. The opener
must be grounded.
9. Properly secure wire under plastic ties so that wire does not come in contact with moving parts.
10. Reinstall the cover. DO NOT run garage door opener at this time.
PERMANENT WIRING
Refer to page 27 for models manufactured after October 2012.
26
Ground Wire
Black
Ground Tab
Wire
Green Ground
Screw
White Wire
Wire Nuts