Lutron dimmers use tinned copper wires on some of our products. These
wires are silver in color as a result of the tinning process. Tinned
copper wires are compatible with copper wiring and wire nuts. Lutron
dimmer uses tinned copper wires to avoid stray strands and to make our
products easier to install.
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When dimmers are in the same wallbox, they are considered "ganged". To install ganged dimmers, simply remove the dimmer side sections from the heat sink (side tabs). The maximum wattage capacity for each dimmer is reduced (derated) so that the dimmer does not overheat.