Daktronics AF-3165-34-RGB User Manual
Page 29
Installation with Ground and Neutral Conductors Provided
For this type of installation, the power cable must contain an isolated earth-ground
conductor. Under this circumstance, do not connect neutral to ground at the
disconnect or at the display. This would violate electrical codes and void the
warranty. Use a disconnect so that all hot lines and neutral can be opened. Refer to
for installation details. The National Electrical Code requires the use of a
lockable power disconnect within sight of or at the sign.
Figure 19: Installation with Ground and Neutral Conductors 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
sign 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 sign panel
board.
for installation details.
Figure 20: Installation with Only A Neutral Conductor Provided
Electrical Installation
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