Ganging and Derating Chart
| Control Type | Maximum Capacity | ||
| Full Capacity | Derated Capacities | ||
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| Dimmers | |||
| Incandescent [2] | 600W 1000W |
500W 800W |
400W 650W |
| Dual Slide Dimmers | 300W/300W | 250W/250W | 200W/200W |
| Electronic Low Voltage | 300W 600W |
250W 500W |
200W 400W |
| Magnetic Low Voltage [2] | 600VA (450W) 1000VA (800W) |
500VA (375W) 800VA (650W) |
400VA (300W) 650VA (500W) |
| Fan Speed Controls | |||
| Quiet 3-Speed [3] | 1.5A | No Derating Required | No Derating Required |
| Fully Variable | 5A | 4A | 3A |
| Fan /Light Controls | |||
| Quiet 3-Speed [3] | 1.5A/300W 1.5A/600W |
No Derating Required No Derating Required |
No Derating Required No Derating Required |
| Fully Variable [4] | 2.5A/300W | 2.1A/250W | 1.7A/200W |
| Electronic Switches | |||
| RadioRA | 8A | 6.5A | 5A |
| Spacer System | 6A | 5A | 3.5A |
| Ganging and Derating:
A typical dimmer is wider than a switch. This increased size helps the dimmer dissipate the internal heat normal to operation. Dimmers can be ganged together such that the space between them is the same as for switches. To do this, a portion of the fins (heat sink) must be removed. The fins are grooved to make the removal of fins easy with a pair of pliers. The removal of these fins reduces the capacity (load) the dimmer can control. Derating Requirements for: Ariadni®, Diva®, Diva Satin Colors®, Glyder®, Lumea2®, Maestro®, RadioRA®, Rotary®, Skylark®, Spacer®, and Spacer System™ Controls Derating refers to the reduction of the maximum capacity (load) a unit can reliably handle when fins/side sections are removed.
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