Daktronics TN-2007 Installation And Maintenance Manual

Daktronics TN-2007 Installation And Maintenance Manual Manual pdf 19 page image

Electrical Installation 3-53.7 SignalSignal for the scoreboards travels directly from the controller, typically a RC-100controller. The signal for these scoreboards requires no signal wire, because it is awireless radio signal.3.8 Power DisconnectPower to the display should be routed through a fused disconnect switch capable ofopening all ungrounded power conductors. The National Electrical Code requires ameans of disconnect visible (in a direct line of sight) from the display. Thisrequirement protects workers by keeping the disconnecting means within view whilethey are servicing the display. An exception to this requirement is the type ofdisconnect which may be locked in the open position, and that may be locatedelsewhere. Daktronics recommends providing a lockable disconnect switch (knifeswitch) at the display location so that all power lines can be completelydisconnected.Note: Use a multi-connector disconnect so that all hot lines and the neutral line canbe disconnected. Power conductors from the disconnect to the display should berouted through conduit in agreement with local code.