Electrical Installation
11
Section 4:
Electrical Installation
4.1 Power Installation
Qualified personnel must perform electrical installations to prevent injury to personnel and
damage to equipment.
4.2 Grounding
All components of a display system—including but not limited to displays, control
equipment, and connected peripheral equipment—must be electrically grounded. Only
qualified individuals may perform electrical work, including verification of ground
resistance. Daktronics is not responsible for improper grounding or damage incurred as a
result of improper grounding.
Grounding methods must meet the provisions of all applicable local and national codes.
Inspect and verify all grounding methods meet the provisions of all applicable local and
national codes.
Proper grounding is necessary for reliable equipment operation and general electrical safety.
Failure to properly ground the display system may void the warranty, disrupt operation,
damage equipment, and cause bodily harm or death.
4.3 Power
For installation with ground and neutral conductors provided, the power cable must contain
an isolated earth-ground conductor. Do not connect neutral to ground at the disconnect or at
the display; this violates electrical codes and voids the warranty. Use a disconnect so all hot
lines and neutral can be disconnected.
4.4 Bonding Screw
A bonding screw is included (not installed) with the panelboard. If the bonding screw is
required, install it to avoid violation of local and national codes.
4.5 Power Connections
Each display operates on 120/240 VAC 3-wire plus ground, single-phase power. Power
routes through the opening in the display rear and terminates at the panelboard.
Route power and signal cables to the display in conduit approved by local and national
codes. Terminate all wires as labeled in the termination panels.
