Sign & Digital Graphics

December '14

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22 • December 2014 • S I G N & D I G I T A L G R A P H I C S ELECTRIC SIGNAGE Raceway Wiring One interesting raceway function (and advantage) is the ability to house both wiring and electrical components. This is one example of how raceways differ from both wireway and flush mounting. A raceway will contain not only wiring (as wireways do) but also power supplies. Professional raceway wiring requires a number of specific protocols to be fol- lowed for a high-quality and long-lasting job. As a signage retailer, you should per- form a quick check on these wiring qual- ity features prior to sending the sign out for installation. First, the wiring butt connectors must not have any exposed copper (well- constructed butt connectors are better than using wire nuts or electrical tape.) Exposed copper may result in electrical "arcing," which in turn may short out the sign electricity. Second, all excess internal wire should be eliminated. A "thicket" of internal raceway wiring will make future sign service more difficult and costly. Sample raceway specifications and materials. Excerpt from sign permit application listing sign projection as a permit criteria. Wiring raceway butt connectors.

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