Leviton Catalog - Womack Electric Supply Company

GANGING AND DERATING LIGHTING CONTROLSCommercial Grade Lighting ControlsGanging and Derating Box-Mounted Lighting ControlsGanging is an installation practice where two or more lighting controlsare mounted side-by-side using the required number of connectedwallboxes. Ganging may require the removal of part of the fins onArchitectural Dimmers or part of the mounting strap on strap-mounteddevices. In Architectural Dimmers, the metallic fins help dissipate heatfrom within the device. Strap mounted dimmers use the mountingstrap for the same purpose. Therefore, removing a portion of the fins orstrap for ganging purposes will require derating the dimmers to preventthem from overheating.Ganging and Derating Leviton Lighting ControlsWhen ganging Mural, True Touch, TouchPoint, ToggleTouch andIllumaTech controls, the side sections of the mounting strap must beremoved. Use pliers to carefully bend side sections back and forthuntil they break off. The side sections of the strap dissipate heat, soremoving them requires derating the dimmer’s capacity. See Chart 1.Note that Leviton SureSlide and Trimatron lighting controls can beganged without removing any sections of their mounting straps.However, SureSlide and Trimatron controls must also be derated whenthey’re ganged.GangingSwitch boxes requiredfor ganging Levitonarchitectural controlswhen no fins are removed:Maximum Load Per Dimmer for Multi-GangingAll Strap-Mounted DimmersGanging and Leviton Renoir ® and Van Gogh ® Architectural Lighting ControlsWhen fins are broken off on wide and narrow controls for ganging purposes, the number of switch boxes required can be quickly determined byreferring to the two charts below.Number of Wide Controls*Narrow controls must have fins broken off to be ganged.Number of Narrow Controls*0 0 1 2 3 40 • • • • •1 1 3 5 7 82 4 6 7 9 113 7 9 10 11 134 9 11 12 14 16Chart 1Dimmer Single 2-Gang More ThanRating2-Gang500W 500W 400W 300W600W 600W 500W 400W1000W 1000W 800W 700W400VA 400VA 350VA 250VA600VA* 600VA 500VA 400VA1000VA 1000VA 800VA 700VA*Except IPX06-7, which requires no deratingMaximum Bulb Wattage for Magnetic Low-Voltage LightingThe capacity of a magnetic low-voltage dimmer is its VA rating. If awattage rating is also listed (as in this book), it is merely an estimate ofthe lamp wattage that can be placed on a UL-approved magnetic lowvoltagetransformer without exceeding the dimmer's VA rating. (Thisis, in turn, based on an estimate of transformer efficiency.)Chart 2Power To Transformer Lamp LoadTransformer Efficiency1000VA X 80% = 800W600VA X 75% = 450WSwitch boxes requiredfor ganging Levitonarchitectural controlswhen all inside finsare removed:Number of Wide ControlsNumber of Narrow Controls0 0 1 2 3 4 5 60 0 1 2 3 4 5 61 1 3 4 5 6 7 82 3 5 6 7 8 9 103 5 7 8 9 10 11 124 7 9 10 11 12 13 145 9 11 12 13 14 15 166 11 13 14 15 16 17 18Architectural Specification Lighting ControlsFor answers to technical questions, call Leviton’s Techline at 1-800-824-3005C17