GANGING AND DERATING LIGHTING CONTROLS

Commercial Grade Lighting Controls

Ganging and Derating Box-Mounted Lighting Controls

Ganging is an installation practice where two or more lighting controls are mounted side-by-side using the required number of connected wallboxes. Ganging may require the removal of part of the fins on Architectural Dimmers or part of the mounting strap on strap-mounted devices. In Architectural Dimmers, the metallic fins help dissipate heat from within the device. Strap mounted dimmers use the mounting strap for the same purpose. Therefore, removing a portion of the fins or strap for ganging purposes will require derating the dimmers to prevent them from overheating.

Ganging and Derating Leviton Lighting Controls

When ganging Mural, True Touch, TouchPoint, ToggleTouch and IllumaTech controls, the side sections of the mounting strap must be removed. Use pliers to carefully bend side sections back and forth until they break off. The side sections of the strap dissipate heat, so removing them requires derating the dimmer’s capacity. See Chart 1.

Note that Leviton SureSlide and Trimatron lighting controls can be ganged without removing any sections of their mounting straps. However, SureSlide and Trimatron controls must also be derated when they’re ganged.

Maximum Load Per Dimmer for Multi-Ganging All Strap-Mounted Dimmers

Chart 1

Dimmer

Single

2-Gang

More Than

Rating

 

 

2-Gang

500W

500W

400W

300W

 

 

 

 

600W

600W

500W

400W

1000W

1000W

800W

700W

 

 

 

 

400VA

400VA

350VA

250VA

600VA*

600VA

500VA

400VA

 

 

 

 

1000VA

1000VA

800VA

700VA

 

 

 

 

*Except IPX06-7, which requires no derating

Maximum Bulb Wattage for Magnetic Low-Voltage Lighting

The capacity of a magnetic low-voltage dimmer is its VA rating. If a wattage rating is also listed (as in this book), it is merely an estimate of the lamp wattage that can be placed on a UL-approved magnetic low- voltage transformer without exceeding the dimmer's VA rating. (This is, in turn, based on an estimate of transformer efficiency.)

Chart 2

Power To

Transformer

Lamp Load

Transformer

Efficiency

 

1000VA

X 80%

= 800W

 

 

 

600VA

X 75%

= 450W

 

 

 

Architectural

Ganging and Leviton Renoir® and Van Gogh® Architectural Lighting Controls

When fins are broken off on wide and narrow controls for ganging purposes, the number of switch boxes required can be quickly determined by referring to the two charts below.

Ganging

Specification

Switch boxes required

 

 

 

 

Number of Narrow Controls*

for ganging Leviton

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Controls

 

0

0

 

1

2

3

4

architectural controls

 

 

when no fins are removed:

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

Wideof

 

 

 

 

 

 

 

 

2

4

 

6

7

9

11

 

 

 

1

1

 

3

5

7

8

 

Number

 

 

 

 

 

 

 

 

3

7

 

9

10

11

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

9

 

11

12

14

16

 

 

 

 

 

 

 

 

 

 

*Narrow controls must have fins broken off to be ganged.

Switch boxes required

 

 

Number of Narrow Controls

 

 

for ganging Leviton

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

0

1

2

3

4

 

5

6

architectural controls

 

 

when all inside fins

 

 

 

 

 

 

 

 

 

 

 

 

0

0

1

2

3

4

 

5

6

are removed:

Controls

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

3

4

5

6

 

7

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wide

 

2

3

5

6

7

8

 

9

10

 

 

 

 

 

 

 

 

 

 

 

 

 

3

5

7

8

9

10

 

11

12

 

of

 

 

 

 

 

 

 

 

 

 

 

 

4

7

9

10

11

12

 

13

14

 

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

9

11

12

13

14

 

15

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

11

13

14

15

16

 

17

18

 

 

 

 

 

 

 

 

 

 

 

 

 

Lighting Controls

C

For answers to technical questions, call Leviton’s Techline at 1-800-824-3005 17

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Sylvania D3208 dimensions Ganging and Derating Lighting Controls, Ganging and Derating Leviton Lighting Controls