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•    Disconnect wires from screw terminals or  

     Quickwire™ slots (shown).
•    Pull off pre-cut insulation from Dimmer 

leads.

•    Make sure that the ends of the wires 

from the wall box are 

straight (cut if 

necessary)

.

•    Remove 5/8" (1.6 cm) of insulation from 

each wire in the wall box (shown).

   For Single-Pole Application, go to Step 

5A.

•   

For 3-Way Application, go to Step 5B.

Single Pole (One location) or 3-Way (Multi-location)

Electronic Low-Voltage Slide Dimmer

Cat. No. 6615-P 

300W–120VAC, 60Hz

INSTALLATION INSTRUCTIONS

DI-00X-06615-02B

Tools needed to install your Dimmer:

Slotted/Philips Screwdriver 

Electrical Tape

Pliers 

 

 

Pencil

Cutters 

 

 

Ruler

Installing Dimmer by itself or with other devices:

If installing Dimmer in a single device application, proceed with the 

INSTALLING YOUR DIMMER

 section. If installing Dimmer in a multi-

device application, proceed as follows:

MULTI-DEVICE APPLICATION

In multi-dimmer installations, the reduction of the dimmerʼs capacity is 

required. Refer to the chart for maximum load per dimmer.

MAXIMUM BULB WATTAGE

The maximum bulb wattage is determined by the efficiency of the 

transformer in the low-voltage lighting system. Transformer efficiencies 

will vary from different manufacturers; consider 80% efficient as average. 

Use the chart to determine maximum bulb wattage for typical transformer 

efficiency ratings.

INSTALLING YOUR DIMMER

NOTE: 

Use check boxes       when Steps are completed. 

       

WARNING:

 To avoid fire, shock, or death; 

TURN OFF  

 

POWER

 at circuit breaker or fuse and test that power is off  

 

before wiring!

       

Removing existing switch:

 

Remove existing wallplate 

and switch mounting screws. Carefully pull switch from wall

        

box. 

DO NOT

 remove wires attached to the switch at this time.

    

 

       

Identifying your wiring application (most    

common):

        

NOTE:

 If the wiring in the wall box does not resemble any of 

these configurations, consult a qualified electrician.

 

Step 2

Step 4

Step 1

Step 3

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Single-Pole:

Look at the back of your 

switch. If there are 2 wires 

connected to two screw 

terminals (not including a 

green or bare copper wire 

used for grounding), you 

have a Single-Pole switch. 

3-Way:

Look at the back of your switch. If there 

are 3 wires connected to three screw 

terminals (not including a green or bare 

copper wire used for grounding), you 

have a 3-Way switch. Note that one of  

the screw terminals will usually be a 

different color (black) or labeled 

Common. Tag that wire with electrical 

tape to identify.  

WARNINGS:

•    To be installed and/or used in accordance with appropriate electrical codes and regulations.
•    If you are unsure about any part of these instructions, consult a qualified electrician.
•    To avoid overheating and possible damage to this device and other equipment, do not install to control a  

     receptacle, fluorescent lighting, a motor- or a transformer-operated appliance. 
•    Use with electronic low-voltage transformers only. 

Do Not

 use to control a magnetic low-voltage transformer. 

Use a Leviton magnetic low-voltage dimmer to control magnetic low-voltage transformers.

•    This dimmer provides protection from overheating. An excessive load applied to the dimmer will cause the 

dimmer to overheat. The excess load must be removed to resume proper operation.

CAUTIONS:

•    This dimmer requires a neutral wire connection. If a neutral wire is not in the wall box, consult a qualified electrician.
•    Use only one (1) dimmer in a 3- or 4-way circuit. The switch(es) will turn the light on at the brightness level selected 

at the dimmer.

•    Lighting fixture and dimmer must be grounded.
•    Disconnect power at circuit breaker or fuse when servicing fixture.
•    Use this device only with copper or copper clad wire. With aluminum wire use only devices marked CO/ALR or 

CU/AL.

                                    

                         More than  

 Cat. No.        Single        Two Devices    2 Devices

 6615-P           300W              300W               250W

MAXIMUM LOAD PER DIMMER FOR MULTI-DEVICE

Tag Common 

Screw Wire

Strip 5/8"

Cut

(if necessary)

Strip Gage

5/8"

Press in slot and 

pull out wire

                                                 

 Two         More than  

            Rating               Single      Gang

       

  2 Gang

   

         300W                   240W        200W         160W

MAXIMUM BULB WATTAGE AT 80% EFFICIENCY

Disconnecting switch wires and preparing wires:

              

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