Daktronics AB-1600-1.5,2.5 - Manual (Page 35)

Electrical Installation
3-9
power. A Daktronics supplied panelboard will be equipped with hi-magnetic trip breakers. If the
customer supplies the panelboard, hi-magnetic breakers should be used. The customer is to supply a
fused main disconnect(s) and wire for power distribution to the multiple breaker boxes. This customer
supplied fused main disconnect is considered the service entrance point.
Due to the inrush current required by the transformers on start-up, the main disconnect may have to be
oversized or use hi-magnetic trip breakers to handle this momentary inrush current requirement. An
alternative is to shut down the individual breakers on the panelboard before turning on the main
disconnect and then turn on the panelboard breakers individually.
The following table illustrates a typical panelboard wiring list. A list similar to this is located inside the
panelboard door. The Square D 30 amp QA breaker is UL listed for 1 or 2 #10 AWG wire(s).
Breaker Wire Wire Breaker
1 W101P & W201P (T1) 2
3 Main W102P & W202P (T2) 4
5 W103P & W203P (T3) 6
7 W104P & W204P (T4) Not Used 8
9 Spare Not Used 10
11 Not Used Not Used 12
Included with the panelboard is a surge suppresser that is not wired at the factory. Refer to Drawing
A-81039 for the wiring of the surge suppresser.
3.7 Configuring the Display Transformers
The transformer used in this display has a 24V output. Refer to drawings as listed in Sections 3.8 and
3.9 for information on configuring the transformer for variable incoming voltage.
3.8 Line Receiver Electrical Installation
Reference Drawings:
Schematic, Power & Wiring 220V ...........................................................Drawing A-127375
Schematic, Power & Wiring230V ............................................................Drawing A-127376
Schematic, Power & Wiring240V ............................................................Drawing A-127377
If the display has a line receiver, the data signal connection to the display is illustrated in Figure 31. If
the display has a data distributor, skip to the sub-section titled Data Distributor Electrical Installation.
For a description of the difference between a display with a line receiver and a data distributor refer to
Section 1.2 Display Overview.