Electrical Installation
16
7 Electrical Installation
This section provides general guidelines for connecting power to a 65 series Daktronics
digital billboard. For display-specific power requirements, refer to the riser diagram or
contact the Project Manager.
Note:
Provide the site-required power to the display as listed on the system riser drawing.
Low or poor power can result in dim content, parts of the display out, module
flickering, or display damage.
Main Disconnect
Daktronics requires using a power disconnect switch with the display. Use a disconnect
so that all ungrounded conductors can be disconnected near the point of power
connection.
Locate the disconnecting means either in a direct line of sight from the display or so it
can be locked in the open position. This ensures that power is not reconnected while
service personnel work on the display.
Electrical Installation
1�
Refer to the display riser diagram for site-
required power.
2�
Run conduit from the main distribution panel
(provided by customer) to the display power
entrance(s).
3�
Route power to the display through a
disconnect switch.
4�
Loosen the four screws that secure the power
entrance cover and lift it off of the power
entrance. Refer to
5�
Feed power cable through the conduit into the
power entrance.
6�
Connect the ground wire to the ground lug on the left
side in the power entrance box (green wire) and
tighten to 45 in-lbs with a
3
/
16
″ hex head wrench. Refer
.
7�
Connect power line 1 (L1) to Line 1 of the tap and use
a
3
/
16
″ hex head wrench to tighten to 57 in-lbs.
8�
Connect power line 2 (L2) to Line 2 of the tap
and use a
3
/
16
″ Hex head wrench to tighten to
.
9�
Connect the neutral line to the neutral tap
and use a
3
/
16
″ Hex head wrench to tighten to
57 in-lbs.
10�
Verify the breakers for the control equipment
and surge suppressor are on.
11�
Verify the breaker for the Backlit ID is off unless
there is a backlit ID.
Figure 28:
Power Entrance Box
Figure 29:
Connect Ground Wire
Figure 30:
Connect Power Lines
