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Lutron Ganging and Derating Information
Ganging is the mounting of two or more controls side-by-side in a series of connected wallboxes.
What is a side section / fin breakoff?
A scored section along each side of the mounting plate/fin designed to be removed to facilitate ganging.
Ganging and Derating for Lutron Wallbox Dimmers
Vareo, Nova T*, Nova, Centurion - may be ganged without removing the side sections - no derating required. Side sections can be removed to save space or have ganged units fit into existing wallboxes - derating required (side sections must be removed if using VWP Vareo wallplates for Vareo wallplates for Vareo dimmers or tap switches).
Lumea2, Maestro, Diva, Skylark, Ariadni, Faedra, Glyder, Rotary - must remove side sections to gang - derating required.
Athena - no removable side sections - no derating required when ganged.
What is derating?
The reduction of the maximum capacity (load) a dimmer can reliably handle when the side sections (fins) are removed.
Planning a Multigang Installation
Step 1
Determine if the side sections are to be removed or to remain intact (applicable to Vareo, NovaT*, Nova, Centurion).
Consider: width of application, load, number of wallboxes required, product type and side section breakoff options
Control Widths (for determining width of a ganged installation)
| Control Size |
Width |
| |
Side Sections |
One Side Removed |
Two Sides Removed |
| Small |
2 3/4" |
2 1/4" |
1 3/4" |
| Large |
4 1/2" |
4 1/8" |
3 5/8" |
- All Vareo models are considered "small" controls
- For control sizes of Nova T* and Nova dimmers:
- 600W and 1000W models are "small" controls
- 1500W and 2000W models are "large" controls
- For control sizes of Centurion and Athena dimmers
- 600W and 1000W models are "small" controls
- 1500W and 2000W models are "large" controls
- All Lumea2, Maestro, Diva, Ariadni, Faedra, Glyder and Rotary models are considered "small" controls
Step 2
Use the capacity derating charts to determine maximum permissible loads for each control in the installation if side sections will be removed
Step 3
Determine number of wallboxes required and plan control placements in gang (see charts below):
WALLBOXES REQUIRED - All side sections intact
| |
Number of Small Controls |
| Number of Large Controls |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
| 0 |
0 |
1 |
1+1* |
4 |
4+1* |
7 |
7+1* |
| 1 |
1 |
3 |
5 |
6 |
8 |
9 |
11 |
| 2 |
4 |
6 |
7 |
9 |
10 |
12 |
14 |
| 3 |
6 |
8 |
10 |
11 |
13 |
14 |
16 |
| 4 |
9 |
11 |
12 |
14 |
15 |
17 |
18 |
NOTE: When ganging an even number of small controls with no side sections removed, use wallboxes with tapped ears as shown below. Do not use plastic rings or gangbox covers. Space an additional wallbox 3/4" apart from the other wallbox(es). A 3/4" chase nipple is recommended as a spacer between the wallboxes.
Example: wallbox arrangement required for gang of 4 small controls, side sections intact:
Assembling the Controls
When ganging any combination of small and large controls, place a small control on one extreme end of the gang, and a large control at the other end of the gang. Use center and offset mounting holes as necessary.
WALLBOXES REQUIRED - All inside sections removed
| |
Number of Small Controls |
| Number of Large Controls |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
| 0 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
| 1 |
1 |
3 |
4 |
5 |
6 |
7 |
8 |
| 2 |
3 |
5 |
6 |
7 |
8 |
9 |
10 |
| 3 |
5 |
7 |
8 |
9 |
10 |
11 |
12 |
| 4 |
7 |
9 |
10 |
11 |
12 |
13 |
14 |
Removing Inner Side Sections
When removing side sections, remove only inner side sections. Do not remove side sections on outer ends of the gang.
Assembling the Controls
When ganging any combination of small and large controls, place a small control on one extreme end of the gang and a large control at the other end of the gang. Use center and offset mounting holes as necessary.
Step 4
Determine the multigang wallplate requirements (Vareo, NovaT*, and Nova).
Click here for the wallplate configurator
Capacity derating charts
Vareo1,2 and Nova T*1,2 Products
| |
 |
 |
 |
| Control Type |
No side sections removed (full capacity) |
One side section removed |
Middle unit has two side sections removed |
| Dimmers |
Maximum Capacity |
| Incandescent |
600W |
500W |
300W |
| 1000W |
900W |
700W |
| 1500W |
1250W |
1000W |
| 1950W2 |
- - |
- - |
|
Magnetic Low Voltage |
600VA |
500VA |
300VA |
| (4540W) |
(400W) |
(250W) |
| 1000VA |
900VA |
700VA |
| (800W) |
(750W) |
(500W) |
| 1500VA |
1250VA |
1000VA |
| (1200W) |
(1000W) |
(800W) |
| Fluorescent |
| Hi-Lume / Eco-10 (ECO Series) |
| Vareo |
20 Ballast / 8A |
20 Ballast / 6A |
20 Ballast / 4.5A |
| Nova T* |
6A |
No derating required |
No derating required |
| 8A |
No derating required |
No derating required |
| 16A |
No derating required |
No derating required |
| Eco-10 (TVE Series) 0-10 VDC |
60 Ballast / 16A |
No derating required |
No derating required |
| Tu-Wire3 |
5A |
4A |
3.3A |
| Fan-Speed Control |
| Quiet Controls4 |
1.5A |
1.5A |
1.5A |
| Fully Variable Controls |
6A |
4.2A |
2.5A |
| 12A |
10A |
8.3A |
| Electronic Tapswitches6 |
1000W/VA |
800W/VA |
650W/VA |
1Controls must have side sections removed to gang if using "VWP Series" wallplates
2Recommended minimum 40 watt load
3Minimum capacity: 2 ballast / 2.5A
4For use with only one ceiling paddle fan; prevents motor him
5For NT-2000 only. Do not break fins / side sections
6VETS-R auxiliary electronics do not require derating
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Nova and Centurion Products
| |
|
|
|
| Control Type |
No side sections removed (full capacity) |
One side section removed |
Middle unit has two side sections removed |
| Dimmers |
Maximum Capacity |
| Incandescent |
600W |
500W |
400W |
| 1000W |
900W |
700W |
| 1500W |
1250W |
1000W |
| 2000W |
1800W |
1500W |
| Magnetic Low Voltage |
600VA |
600VA |
500VA |
| (450W) |
(450W) |
(400W) |
| 1000VA |
900VA |
700VA |
| (800W) |
(750W) |
(500W) |
| 1500VA |
1250VA |
1000VA |
| (1200W) |
(1000W) |
(800W) |
| 2000VA |
1800VA |
1500VA |
| (1600W) |
(1500W) |
(1200W) |
| Electronic
Low Voltage |
450W |
400W |
350W |
| Fluorescent |
Nova controls may be used with either Lutron Hi-lume electronic dimming ballasts or magnetic dimming ballasts. Controls used with electronic dimming ballasts do not require derating |
| Fan-Speed Controls |
| Fully Variable Controls |
6A |
5.5A |
5A |
| 12A |
11A |
10A |
Athena controls may only be ganged with side sections intact and do not require derating
Ariadni,
Diva, Diva Satin Colors, Faedra1, Glyder, Luméa2, Maestro1, RadioRA, Rotary, Spacer1, and Spacer System1
| |
 |
 |
 |
| Control type |
No side
sections removed (full capacity) |
One side
section removed |
Middle unit
has two side sections removed |
| Dimmers |
Maximum Capacity |
| Incandescent2 |
600W |
500W |
400W |
| 1000W |
800W |
650W |
| Dual Slide
Dimmers |
300W / 300W |
250W / 250W |
200W / 200W |
| Magnetic Low Voltage2 |
600VA |
500VA |
400VA |
| (450W) |
(375W) |
(300W) |
| 1000VA |
800VA |
650VA |
| (800W) |
(650W) |
(500W) |
| Electronic Low Voltage |
300W |
250W |
200W |
| 600W |
500W |
400W |
| Fluorescent |
| Hi-Lume / Eco-10 (ECO and TVE Series) |
20 Ballast /
6A |
No derating required |
No derating required |
| 8A |
No derating required |
No derating required |
| Tu-Wire |
5A |
4A |
3.3A |
| Fan-Speed Controls |
| Quiet Controls4 |
1.5A |
No derating required |
No derating required |
| Fully Variable Controls5 |
5A |
4A |
3A |
| 10A |
Cannot gang |
Cannot gang |
| Fan / Light Controls Quiet Controls4 |
| Skylark |
1.5A / 360W |
No derating required |
No derating required |
| Fan / Light Controls Fully Variable5 |
| Skylark |
5A / 360W |
4A / 360W |
3A / 360W |
| Skylark |
2.5A / 300W |
2.1A / 250W |
1.7A / 200W |
| Electronic Switches |
| RadioRA |
8A |
6.5A |
5A |
| Spacer System |
6A |
5A |
3.5A |
1Accessory dimmers/accessory switches for Spacer System, Spacer, RadioRA, Faedra, and Maestro Smart Remotes do not require derating.
2Minimum loads 40W for Maestro, Faedra, and Spacer dimmers; 60W for Spacer System dimmers, 50W for RadioRA dimmers
3Minimum capacity: 2 ballasts, 2.5A
4For use with one ceiling paddle fan; prevents motor hum
5Total fan plus light load may not exceed 2.5A |
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