Power Installation
5
3 Power Installation
Only qualified individuals should terminate power and signal cable within this Daktronics
display.
Daktronics engineering staff must approve any changes made to the display. Before
altering the display, submit detailed drawings for the proposed modifications to the
Daktronics engineering staff for evaluation and approval, or the warranty will be void.
Note:
Daktronics recommends that a separate circuit be run to the electronic
display(s) to isolate it and prevent any issues that could be caused by line
voltage fluctuations or high frequency noise on the power line caused by
other types of equipment. A separate circuit also makes display maintenance
and troubleshooting easier. Daktronics assumes no liability for any issues
caused by line voltage fluctuations or other improper power conditions if these
recommendations are not followed.
Conduit
Daktronics does not include conduit with the display. Separate conduit must be used to
route the following:
• Power
• Signal IN wires
• Signal OUT wires (if signal is required for another display)
For power, displays are provided with either a J-box or a
3
/
4
" conduit access hole
located near the lower right on the back of the display.
Overview of Power/Signal Connection
1.
Power to the display will be terminated externally in most cases. The
section shows external wiring examples.
2.
Possible methods for signal termination are shown in the various communication
manuals.
3.
Power is routed to the display through a fused disconnect switch capable of opening
all ungrounded power conductors. Install the disconnect within the line of sight of
any personnel performing maintenance on the display, unless it can be locked in the
open position.
Note:
Displays are equipped with circuit breakers that carry a
UL489
or
UL1077
(IEC 60947, VDE 660)
rating. These devices are intended only to protect the
components within the display.
4.
Power conductors from the disconnect to the display should be routed through
conduit following local code specifications.
5.
Display power will terminate either to the J-box or internally at the power termination
panel.
