Rev C
Doc 6001287 (01-20284)
5 of 40
C.
POWER WIRING
1. Provide a separate conduit stub for the AC power.
2. Each gate operator requires a 115 VAC 20 AMP single phase circuit.
NOTE:
Master and
Slave units each require separate circuits to prevent false overcurrent faults.
3. Wiring must comply with the local Electrical Code for operating a ½ HP motor (suggest 12
AWG for up to 300’ and 10 AWG for up to 500’ long wire runs).
4. Be sure to pull a ground wire in the conduit for the connection to the gate operator. Do not rely
on metallic conduit for earth ground.
D.
LOOP DETECTORS
1. The gate operator has a shelf that can support non-LiftMaster loop detector electronics. Power
for the loop detector can come from the auxiliary 115 VAC plugs in the gate operator or from
the 24 VAC provided by the gate operator control board.
NOTE:
The auxiliary plugs have power regardless of the unit power switch setting.
2. Conduit provisions should be made for the “loop” wire entrance to the loop detector.
3. Shelf space on systems without the Power Fail Operation Option is about 13" x 7" x 32" high
4. Use 16-24 AWG stranded or 18-24 AWG solid wire.
NOTE:
Optional LiftMaster-supplied loop detector add-on boards are available, both pre-installed
and for installation in the field. See Part 4, BG 3000-B1 Options.
E.
MASTER/SLAVE INTERCONNECTION (MASTER/SLAVE SYSTEM ONLY)
1.
A conduit between the Master and Slave units should be provided for the Master/Slave
interconnection cable.
2.
Two shielded twisted pair wire 16 AWG to 24 AWG will be connected between the two units at
TB5 on the controller board.
NOTES:
1.
See Installation and Operation of Master/Slave Systems for
Series B1 Gate Operators Doc. No. 6001378
2.
Do not run the Master/Slave cable and AC power wires in the same conduit.
3.
Master/Slave interconnection cable should not exceed 3000 feet in length.
F.
OTHER CONNECTIONS
1.
Provisions should be made for conduit entrance into the gate operator for external
activating devices such as key switches, telephone entry systems, loops, etc.
2.
Wire size requirement: 16-24AWG stranded or 18-24AWG solid wire should be used.
INSTALLATION NOTES