Daktronics BA-515 Display Manual

Also see for BA-1018: DISPLAY MANUAL Installation, Maintenance, and Specifications Manual

Contents

Daktronics BA-515 Display Manual Manual pdf 46 page image

Electrical Installation42WARNING: It is critical that the scoreboard circuit be fused at 15 A and that all conductorsused must be designed to pass a 15 A current in normal operation. Failure to meet wiring andovercurrent protection device requirements is a violation of the National Electrical Code® andwill void the scoreboard warranty.All power conductors are 14 AWG, except where 18 AWG wiring is called out on theschematic. All signal conductors are 18 AWG.Refer to the outdoor scoreboard schematics listed at the beginning of this section and to thetables in Section 3 to determine circuit specifications and maximum power requirements forthe models described in this manual.GroundingReference Drawings:Schematic; Multipurpose LED DRVR .................................................... Drawing A-165028Schematic; GEN III & IV OD LED, 3 DRVR Display .............................. Drawing A-179541Schematic; GEN III & IV, OD LED, 1 DRV w/TNMC ............................. Drawing A-179790Schematic; GEN III & IV, OD LED, 3 DRV w/TNMC ............................. Drawing A-180081Schematic; GEN III & IV, O.D. LED, 2 DRVR Display ........................... Drawing A-180637Schematic; GEN IV Outdoor LED,16 Column DRVR ............................ Drawing A-285779Schematic, GEN IV Outdoor Driver,8 Column Driver ............................ Drawing A-285881Schematic; 240V GEN IV Outdoor LED, 16, COL Driver ...................... Drawing A-324504Schematic; Baseball w/S.O.P. GEN IV, optional TNMC ........................ Drawing B-204725Schematic; GEN III & IV OD LED, 1DRVR W/S.O.P. ............................ Drawing B-210454Schematic; 3 DRVR, TNMC, G4 ............................................................ Drawing A-751690Note: Displays MUST be grounded according to the provisions outlined in Article 250 of theNational Electrical Code and according to the specifications in this manual. Daktronicsrecommends 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 display system must be connected to an earth electrode installed at the display. Propergrounding is necessary for reliable equipment operation. It also protects the equipment fromdamaging electrical disturbances and lightning.Note: The display must be properly grounded, or the warranty will be void.Refer to the schematics listed at the beginning of this section for information about groundwire connection. The connection is illustrated in the “Pwr In” detail on each of theschematics.The material for an earth-ground electrode differs from region to region and may varyaccording to conditions present at the site. Consult the National Electrical Code and any localelectrical codes that may apply. The support structure of the display cannot be used as anearth-ground electrode. The support is generally embedded in concrete, and if it is in earth,the steel is usually primed or it corrodes, making it a poor ground in either case.