Daktronics BB-2140 Transparent Shot Clock - Manual (Page 15)

Electrical Installation 9
Section 4: Electrical Installation
CAUTION: Only qualified individuals should access the electrical components of the display and its
associated equipment. It is the responsibility of the electrical contractor to ensure that all electrical
work meets or exceeds local and national codes.
Daktronics engineering staff must approve all changes or the warranty will be void.
4.1 Installation Overview
Electrical installation involves routing power and control signal wiring through separate
conduit or wire ways.
Note: Control signal cable and some junction boxes are not provided as part of this
system and can be purchased locally or from Daktronics.
4.2 Power
Install a grounded receptacle near the equipment so that the power cord can easily reach it.
Each shot clock control enclosure comes with a 120 V AC or 230 V AC twist lock power plug.
The power plug will need to be attached to a 120 V AC or 230 V AC power cord (by the
customer) as follows:
 120 V AC wiring: Connect black wire to copper terminal, white wire to nickel
terminal, and green wire to green terminal.
 230 V AC wiring: Connect black wire to copper terminal, red wire to copper terminal,
and green wire to green terminal.
Grounding
Connect the scoreboard to earth ground. Proper grounding assures reliable equipment
operation and protects the equipment against damaging electrical 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 grounding connection on the power
cord‟s three-prong plug connects to the shell of the scoreboard.
Note: The customer must properly ground the outlet according to local and national
codes. Failure to ground the outlet voids the warranty for the scoreboard.