Daktronics Galaxy AF-3500 Series 46 mm - Manual (Page 13)

Power Installation 9
Section 3:
Power Installation
Only a qualified individual should terminate power and signal cable to a Daktronics display.
Daktronics engineering staff must approve all proposed changes, or the warranty will be void.
3.1 Conduit
Daktronics does not provide conduit. Separate conduit must be used to route:
 Power
 Signal-in wires to the signal termination enclosure (when applicable).
 Signal-out wires (if not using the provided interconnect cable).
For power, displays come with either a J box, or a 3 /
4
" conduit access hole located near the
lower-right corner, on the back of the display. For signal, displays come with either signal
input quick-connects, or etched drilling guides for conduit.
3.2 Overview of Power Connection
 Terminate display power either at the J box, or internally, at the power termination panel.
Refer to Section 3.5 for wiring examples.
 Route power to the display through a fused disconnect switch, which can open all
ungrounded power conductors. Refer to Section 3.3 for additional information.
 Install the disconnect switch within sight of display maintenance personnel, unless it can
be locked in the open position. Refer to Section 3.3 for additional information.
Note: Displays are equipped with circuit breakers that carry a UL489 or UL1077 (IEC
60947, VDE 660) rating. These devices protect only the components within the display.
 Follow local code specifications when routing power conductors from the disconnect
switch to the display.
 Connect the grounding conductor to the grounding lug on the back of the display. Refer
to Section 3.4 for additional information.
 For sectional displays, each section has its own power termination panel. Display lengths
of 208, 224, 240, and 256 are two sections shipped as one; therefore, the installer will have
to bring power to each assembled section.
3.3 Power Requirements
 Install the display according to applicable local and national electrical codes. This
includes proper grounding and bonding of the display.
 Displays use single-phase power.
 Do not connect the displays to any voltage other than that listed on the Daktronics
product label.
 Proper power installation is imperative for display operation.
 Refer to Appendix B: for the power specifications of the various display sizes.
Note: For circuit conductors delivering power to a display, size them according to local
and national electrical codes, so the power distribution system delivers full load power to
the display while maintaining a voltage within five percent of the nominal utility voltage.