Daktronics SW-2101 Aquatics/Track LED Scoreboard - Manual (Page 14)

8 Electrical Installation
4. Pull the power/signal cable from the lower module through the 2" hole in the top of
the cabinet up into the next module and connect the 5-pin jack to the mating plug in
the driver enclosure.
5. Repeat the connection process in Step 4 with any other modules in the system.
6. Connect the power cord to a 120 VAC power outlet.
7. Replace cover and panels. Insert a 2" plug in the bottom hole of the lowest module.
The hookup procedure for a 230 V display is identical; the only difference between the two
electrical systems is the 230 V power cord (Refer to Drawing A-130676).
3.2 Outdoor Scoreboard Power
Correct power installation is imperative for proper display operation. The subsections that
follow give details of display power installation. Only qualified individuals should attempt to
complete the electrical installation; untrained personnel should not attempt to install these
displays or any of the electrical components. Improper installation could result in serious
damage to the equipment or injury to personnel.
Outdoor scoreboards require a dedicated 120 or 240 VAC circuit for incoming power (refer to
the Electrical Specification drawings in Appendix B.
WARNING: It is critical that the scoreboard circuit be fused at 15 A and that all
conductors used must be designed to pass a 15 A current in normal operation.
Failure to meet wiring and overcurrent protection device requirements will void the
scoreboard warranty.
Grounding
The display must be properly grounded according to local and national codes or the warranty
will be void. Proper grounding is necessary for reliable equipment operation and protects the
equipment from damaging destructive disturbances and lightning.
Daktronics recommends a resistance-to-ground of 10 ohms or less. The electrical contractor
performing the electrical installation can verify ground resistance. Daktronics Sales and
Service personnel can also provide this service.
The display system must be earth-ground. The material for an earth-ground electrode differs
from region to region and may vary according to conditions present at the site. Consult local
and national electrical codes.
Daktronics does not recommend using the support structure as an earth-ground electrode;
concrete, primer, corrosion, and other factors make the support structure a poor ground.
Note: The support structure may be used as an earth-ground electrode only if designed to
do so. A qualified inspector must approve the support structure and grounding methods.
There are two types of power installation: installation with ground and neutral conductors
provided, and installation with only a neutral conductor provided. These two power
installations differ slightly, as described in the following paragraphs: