Daktronics Galaxy AF-3200 34 mm - Manual (Page 13)

two faces, power will need to be connected to both the primary and the
mirror displays separately.
6. Connect the grounding electrode conductor at the grounding lug on the
back of the display. If the display has two faces, a ground will need to be
connected to each display face.
7. Signal cable is routed to the signal termination enclosure. A grounding
electrode may also be connected there (when required).
8. Signal into the enclosures must be routed through 1/2"conduit.
9. The signal quick-connect cable from the enclosure to the display can be
routed through conduit or through the display pole.
Note: Daktronics strongly recommends that the quick-connect cable be secured to
protect it from weather and vandalism.
3.3 Power Requirements
Do not connect the displays to any voltage other than that listed on the
Daktronics product label.
Conductors of circuits delivering power to a Daktronics display shall be
sized in accordance with NEC and local electrical codes so that the power
distribution system is capable of delivering full load power to the display
while maintaining a voltage within 5% of the utility nominal voltage.
Each display uses a 120 VAC or 120/240 VAC single-phase power source. Proper
power installation is imperative for proper display operation. Basic power
information for various display sizes can be found in the specifications chart in
Appendix A. The following sub-sections provide details for power installation.
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 be disconnected. The main
disconnect should be mounted at or near the point of power supply connection. 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 enables a worker to keep the
disconnecting means within view while working on the display.
Exception: Disconnect components that are capable of being locked in the open
position may be located elsewhere.
3.4 Grounding
This sign is to be installed in accordance with the requirements of
Articles 250 and 600 of the National Electrical Code
and/or other applicable local codes.
This includes proper grounding and bonding of the sign.
Power Installation 3-2