Daktronics AF-3400-64-R,A - Manual (Page 23)

3.5 Power
Reference Drawings:
Panel Board Layout, AF-3400-64mm .......................... Drawing A-192369
Power Specs, AF-3400-**x**-64-A-P-*-Domestic ........ Drawing A-192935
Power Specs, AF-3400-**x**-64-R-P-*-Domestic........ Drawing A-192937
Refer to Drawings A-192935 and A-192937 for voltage and current requirements for
the display size. The display will use either a 120/240VAC single-phase power or
120/208 three-phase power source.
Do not connect the display to any voltage other than that listed on the
Daktronics product label.
Proper power installation is imperative for proper display operation. The following
sub-sections give details of display power installation.
Grounding
This sign is intended to be installed in accordance with the requirements of
Article 600 of the National Electrical Code and/or other applicable local codes.
This includes proper grounding and bonding of the sign.
Displays must be grounded according to the provisions outlined in Article 250 of the
National Electrical Code
®
. Daktronics requires a resistance to ground of 10 ohms or
less. Verification of ground resistance can be performed by the electrical contractor
who is performing the electrical installation. Daktronics Sales and Service personnel
can also perform this service.
The display system must be connected to earth-ground. Proper grounding is
necessary for reliable equipment operation. It also protects the equipment from
damaging electrical disturbances and lightning. The display must be properly
grounded or the warranty will be void.
A grounding lug is included on the back of the display for easier connection of the
grounding electrode.
Figure 15: Display Grounding
Electrical Installation 3-5