Daktronics AF-3180-64-R,A - Manual (Page 27)

Figure 21: Installation with Ground and Neutral Conductor Provided
Installation with Only a Neutral Conductor Provided
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 panel board.
• 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
panel board.
Refer to Figure 21 below for installation details.
Figure 22: Installation with only Neutral Conductor Provided
Electrical Installation 3-7