Power Wiring - Chamberlain LA500DC Installation Manual

STEP 8

POWER WIRING

The standard control box can be wired for either 120 Vac or 240 Vac.
Factory default is 120 Vac. The Large Metal Control Box (XLM) can be
wired for 120 Vac (default).
The batteries are charged in the circuit by the toroid transformer,
plug-in transformer, or the solar panels. Main power supply and
control wiring MUST be run in separate conduits.
SOLAR APPLICATIONS: For solar applications refer to Solar Panels
section in the Appendix. Follow the directions according to your
application.
NOTE: If using an external receiver use shielded wire for the connections
or mount the receiver away from the operator to avoid interference with
the operator.
STANDARD CONTROL BOX
1. Turn off the AC power from the main power source circuit breaker.
2. Run the AC power wires to the control box.
3. Remove the toroid assembly from the control box by loosening the
four screws and lifting the assembly up and out.
4. Ensure the 120/240 plug is connected to either the 120 or 240 Vac
connector on the EMI board depending on your application. Factory
default is 120 Vac.
5. Connect the ground wire to the ground screw on the back of the
toroid assembly.
6. Connect the white wire from the toroid assembly to NEUTRAL using
a wire nut.
7. Connect the black wire from the toroid assembly to HOT using a
wire nut.
8. Replace the toroid assembly and tighten the four screws. Ensure the
wires are not pinched.
9. Plug the J15 plug into the control board. The control board will
power up. NOTE: You may see a small spark when plugging the J15
plug into the board.
10. Turn ON AC power to the operator.
INSTALLATION
Wire Gauge 14
Wire Gauge 12
Wire Gauge 10
Wire Gauge 14
Wire Gauge 12
Wire Gauge 10
NOTE: Use copper conductors ONLY.
Toroid
Assembly
(incoming power wires)
20
OPERATOR POWER SOURCE
120 VAC
OR
240 VAC
STANDARD CONTROL BOX
J15 Plug
240 Vac
Connector
120 Vac
Connector
Ground
Screw
(back view of toroid assembly)
350 feet (107 m)
525 feet (160 m)
850 feet (259 m)
1,150 feet (351 m)
1,850 feet (564 m)
2,950 feet (899 m)