Daktronics Galaxy AF-3155, Manual

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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 can all be disconnected. The main
disconnect should be mounted at or near the point of power supply connection to the
display. A main disconnect is to be provided for each supply circuit to the display.
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
Note: The AF-3155 is designed for quicker connection to other displays, and to
additional components such as the temperature sensor or a radio. Connection of the
control equipment to the first display can be done using a cable with a quick connect
or can be wired directly to the controller in that display. Depending on the number of
displays and the communication type ordered, the following cables may be provided
with the displays:
Figure 22: Display Front View
1. Interconnect cable from Primary to Secondary display, length 4 feet
2. Temperature sensor with quick connect cable, length 25 feet
3. Client radio with quick connect cable, length 25 feet
Electrical Installation
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