Daktronics Galaxy AF-3400 Series, Display Manual

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Figure 18: Power Termination Box (4, 6 and 8 Circuit Displays)
Main Disconnect
The National Electrical Code requires the use of a lockable power disconnect near
the display. Provide a lockable disconnect switch (knife switch) at the display
location so that all power lines can be completely disconnected. Use a 3-conductor
disconnect so that both hot lines and the neutral line can be disconnected. The main
disconnect should be mounted at or near the point of power supply connection to the
display. Provide a main disconnect for each supply circuit to the display.
Figure 16
illustrates the main disconnect.
The disconnecting means must be located in a direct line of sight from the display or
outline lighting that it controls. This requirement provides protection by enabling a
worker to keep the disconnecting means within view while working on the display.
Exception: Disconnecting means that are capable of being locked in the open
position may be located elsewhere.
3.7 Signal Termination from Computer to Display
The 46 mm, AF-3400 display is designed for quicker signal connection to the display
and between displays.
•
Signal will terminate to a watertight enclosure that connects to the primary
display using a quick connect cable.
•
Mount the temperature sensor to the display structure preferably at least one
foot away from the display. Terminate it to the primary display with a quick
connect cable (
Do not mount the temperature sensor between displays or
anywhere that the airflow is restricted).
•
The primary display connects to the mirror display (2V installations) with a
6-foot quick connect interconnect cable. For cables with right angle
connectors, make sure the cable extends to the side or down (never up) to
prevent stress on the cable. Flip the end of the cable to switch direction of
the right angle end.
Electrical Installation
3-9