Daktronics GPR-12EV-RGB - Manual (Page 11)

Power Installation 5
Section 3: Power Installation
Read the mechanical, power, and signal installation sections before installing the display(s).
Only a qualified individual should terminate power and signal cable at this Daktronics display.
All proposed changes must be approved by Daktronics engineering staff or the warranty will be null
and void.
3.1 Conduit
Daktronics does not include the 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).
Some displays have a J box on the back for power termination which has 3 /
4
" (1.905 cm)
threaded holes, while others have a 3 /
4
" hole for conduit, and is capped with a rubber plug
on the back for power entry. In this case, power is terminated to an internal power
termination panel. Refer to the shop drawing to determine which type of display is being
installed.
3.2 Overview of Power/ Signal Connection
Following is a brief summary of the power and signal connections to the display.
1. Possible methods for signal termination are shown in the manual for the specific
communication type.
2. Power is routed to the display through a fused disconnect switch that can open all
ungrounded power conductors. Install this disconnect within the line of sight of
personnel performing maintenance on the display. (If the disconnect is located out of
sight of the display, it must be capable of being locked in the open position.)
3. Route power conductors from the disconnect to the display through conduit
according to local and national electrical codes.
4. Display power terminates either internally at the power termination panel or
externally at the J box.
5. Connect the grounding electrode conductor at the grounding lug on the back of the
display.
6. Route signal cable to the signal termination enclosure. When required, the signal
enclosure must be grounded.
7. Route signal into the enclosure through 3 /
4
"conduit. Use supplied hole that is capped
with rubber plug.