Daktronics AF-3010-34 - Manual (Page 27)

Ins allation w th Only a Neutral Conductor Provided t i
Installations where no grounding conductor is provided must comply with article
250-32 of the National Electrical Code. If the installation in question meets all of the
requirements of article 250-32, the following guidelines must be observed:
· Connect the grounding electrode cable at the local disconnect, never at the
display power termination panel.
· A disconnect that opens all of the ungrounded phase conductors should be
used.
· The neutral and the ground conductors should be bonded in the display
power termination panel.
Refer to Figure 17 below for installation details.
Figure 17: Installation with Only Neutral Conductor Provided
3.5 Control Cable Requirements
RS232
This cable is a 2-conductor shielded cable used to transmit an RS232 signal
(Daktronics part number W-1117). This unshielded cable should not be subjected to
mechanical flexing after installation. This cable is not for direct burial and should be
routed in a dedicated, grounded, metallic conduit at the base of the display structure.
This cable has a maximum length of 25 feet.
Electrical Installation 3-5