Section 3: electrical installation, 1 preparing for power/signal connection, 2 power and grounding connections – Daktronics DataTime Outdoor LED Time & Temperature Displays User Manual
Page 13: Power, Section 3, Electrical installation, Preparing for power/signal connection, Power and grounding connections
Section 3:
Electrical Installation
Daktronics outdoor displays are ETL and UL listed and tested to CSA standards for outdoor use.
Contact Daktronics with questions regarding the testing procedures.
Only qualified individuals should perform power routing and termination to the display. It is the
responsibility of the electrical contractor to ensure that all electrical work meets or exceeds local and
national codes.
3.1 Preparing for Power/Signal Connection
Reference Drawing:
Time & Temp Power/Signal Hookup ...................................................... Drawing A-938369
Electrical installation consists of the following process:
•
Providing power and ground to a disconnect near the display.
•
Routing power and ground from the main disconnect to the display driver/power
enclosure.
•
Connecting the display ground to a grounding electrode at the display location.
•
Routing the control signal cable from the control location to the display location.
Drawing A-938369 provides detailed instructions for power and signal connections for time
and temperature displays, including connection of the temperature sensor and connections
between host and client displays. Refer to this drawing before completing any part of the
electrical installation.
3.2 Power and Grounding Connections
Power
Correct power installation is imperative for proper display operation. The following
subsections detail display power installation. Only qualified individuals should complete
electrical installation. Improper installation could result in serious damage to the equipment
and be hazardous to personnel.
Daktronics DataTime displays have removable or hinged front panels that allow access to the
digits, cabling, and other electronic components. Power and control signal hookup has been
simplified.
DataTime outdoor displays require a dedicated, 120 V circuit for incoming power. The
display itself has no breakers or fuses.
WARNING: The display circuit must be fused at 15 A, and all conductors must be
designed to pass a 15 A current in normal operation. Failure to meet wiring and over
current protection device requirements is a violation of the National Electrical Code and
will void the display's warranty.
Electrical Installation
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