Electrical Installation
6
4 Electrical Installation
This section explains the steps necessary to make final electrical connections to the
display from the primary power source. For display-specific power requirements, refer to
the shop drawing or label on the display's back.
Electrical Installation Preparation
• Follow all installation guidelines
• Route power to the display through a disconnect switch
• Provide the required power per display requirements
• Follow all local and national electrical codes
• Do not wire the display to a timer or light sensor, ensuring the eCCB display has power
at all times
• Do not connect the display to any voltage other than that listed on the product label
• Do not connect the neutral to the ground at the disconnect or the display
Electrical Requirements
Do not connect displays to any voltage other than that listed on the display product
label. Galaxy
®
eCCB displays have a voltage input of 100-240 VAC and a frequency
input of 50/60 Hz. Galaxy
®
eCCB displays do not operate on 277 VAC. Connecting 277
VAC may damage internal components and will void the display's warranty.
A dedicated circuit can be shared among all components of the sign structure
(including Galaxy
®
eCCB displays and fluorescent lighting), but only if the circuit is not
controlled by timers or external light sensors. If a circuit is controlled by these devices,
either assign the eCCB to a separate circuit so it has power at all times or disconnect the
timers or external light sensors.
The eCCB display cannot share a circuit with external electrical devices such as air
compressors or island lighting.
A dedicated circuit is defined as one hot, one neutral, and one ground wire.
Maximum amperage will vary with the number and size of Galaxy
®
eCCB displays
connected.
Follow all local and national electrical codes during electrical installation.
Note:
Displays must be fed by a branch circuit no larger than 20A. Failure to meet wiring
and over-current protection device requirements may violate local and national
electrical codes and will void the display warranty.
Note:
Size circuits according to local and national codes so the power distribution
system delivers full-load power to the display while maintaining a voltage within 5
percent of the nominal voltage.
Main Disconnect
Daktronics requires installation of a power disconnect switch with the display so all
ungrounded conductors can be disconnected near the point of power connection.
