CBOX1050
INSTALLATION AND PROGRAMMING MANUAL
11
4.1 HIGH VOLTAGE WIRE GAUGE REQUIREMENTS
• Disconnect power to the gate operator by manually
opening its dedicated circuit breaker before making
any mechanical or electrical adjustments.
• Use a 20 amp dedicated circuit breaker for each
installed gate operator.
• Open dedicated circuit breaker supplying power to
gate operator before a new installation or making any
modifications to an existing installation of this gate
operator.
• All wiring connections must be made by a qualified
individual.
• Run individual circuits in separate U.L. Listed conduits.
Do not combine high voltage (120vac) power wiring
and low voltage (+12vdc to +24vdc) control wiring in
the same conduits.
TABLE 12-1: MAXIMUM RUN PER WIRE GAUGE
110V/AWG GAUGE 14 12 10 8 6 4
MAX RUN
180 FT
(54.8m)
280 FT
(85.3m)
460 FT
(140m)
700 FT
(213.3m)
1150 FT
(350.5m)
1800 FT
(548.6m)
IF AC POWER IS BEING RUN INTO THE CONTROL
BOX FOR CONVERSION TO DC, THE GATE
OPERATOR SYSTEM SHOULD BE GROUNDED
THROUGH THE EARTH GROUND IN THE AC
MAINS WIRING SYSTEM (GREEN WIRE). This
ground connection will prevent dangerous currents
from appearing on the metal control box, the actuator,
or the gate itself.
CAUTION!
DO NOT WIRE AC POWER TO
THE CONTROL BOARD! THE
CONTROL BOARD OPERATES ON
12VDC OR 24VDC ONLY!
Use Table below to determine high voltage wire size requirements. Distance shown in the chart is measured
from the operator to the power source. If power wiring is greater than the maximum distance shown, a service
feeder is recommended. When large gauge wire is used, a separate junction box must be installed for the
operator connection.
Wire table is based on stranded copper wire. Wire run calculations are based on a 110 VAC power source with
a 3% voltage drop on the power line, plus an additional 10% reduction in distance to allow for other electrical
losses in the system.
DANGER!
TO REDUCE THE RISK OF SEVERE
INJURY AND DEATH FOLLOW ALL
SAFETY PROCEDURES!
DANGER!
DO NOT WIRE AC MAINS
POWER TO METAL CONTROL
BOX WITHOUT EARTH GROUND
CONNECTION!
Nice recommends an 8 foot copper rod driven all the
way into the ground with a copper clamp and 12ga
copper wire minimum.
Connect ground wire to the grounding lug on the
lower left corner of the 1050 control board (FIGURE
4-1). Alternatively, bonding of the control box can be
done by drilling a hole in the control box, removing
the powder coating around the hole, and bonding the
copper ground wire to that area with a bolt.
FIGURE 4-1: 1050 CONTROL BOARD
GROUND LOCATION
GROUND
LUG
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