Electrical Installation
8
To make AC power connections at a traffic cabinet:
1.
Remove the panelboard cover to reveal the lugs.
2.
Route the power cables through the bushing and into the panelboard.
3.
Terminate each hot wire at L1 and L2, neutral wire at neutral ground bar lug, and
ground wire to the ground bus bar in the panelboard.
Display Termination
Each display operates on 24 VDC power. Power and signal wires enter through the
conduit hub in rear of the display. Power wires terminate at the terminal blocks. The signal
wires terminate at the VCB. Terminate all wires as labeled on the termination panels.
Conduit Sealing
Fill the ends of conduits entering the display with duct seal.
Module Connection
4-pin connectors make the low voltage power connections within the display. Power for
each module is provided with the use of one red and one black wire. Power connections
are completed at the factory.
Fans and Power Supplies Connection
The fans and power supplies use 120 VAC from the panelboard. The surge suppressor in
the panelboard protects the power supplies and modules from damaging power surges.
Traffic Cabinet
Individually wire the following items directly to the earth-ground rod with an 8 AWG or
larger wire according to local and national codes.
• Earth-ground lug mounted on the rear of the panelboard
•
Conduit grounding collars
• Earth-ground connection inside the panelboard
Earth-ground rods must be installed and connected per local and national codes.
1.
Connect the auxiliary power connection to the panelboard.
2.
Connect the neutral power wire to the neutral bus.
3.
Connect the hot wires from the terminals to the panelboard lugs.
Note:
The terminal blocks on the DC breaker rail are wired differently, depending on
wire gauge.
