Installing a Plum Lightpad in a 3-way with a dumb switch.

Installing a Lightpad in a multi-way switch with a dumb switch.

A multi-way means a light that is controlled by more than one switch such as at the top and bottom of a stairway or on two ends of a hallway.  The term 3-way applies to a light that is controlled by two switches.  4-way is a light that is controlled by three switches.

Plum recommends that all switches in a multi-way circuit be replaced with Plum Lightpads.  However, it is possible to control a multi-way switch with only one Plum Lightpad.  If you do this, you will need to disconnect the other switches in the multi-way circuit, effectively turning the multi-way into a single pole switch.  If this is acceptable to you, these instructions will walk you through the installation:

This method will disable to dumb switch and nothing will happen if it is flipped. If you do not disable the dumb switches, when you turn them off, the entire circuit will lose power and your Plum Lightpad will no longer be powered rendering it non-functional.

  • First, identify the Hot side and the Load side switch.  The Load side switch is the switch that connects to your light.
  • The switches you are replacing have 3 terminals.  Two will be the same color and one will be a different color
  • The two screws that are the same color are used for the traveler wires.
  • The different color screw is called the common terminal.
  • The wire connected to the common terminal is either the Hot wire from the breaker panel or the Load wire to the light.
  • To identify the Load wire vs the Hot wire, turn the breaker on and the switch off.  When the switch is off, the light will be off.
  • Using your voltage detection pen, touch the common wire on both switches.  The switch that registers Hot is the Hot side.  The other switch is the Load side and the wire connected the common on the Load side is the Load wire.
  • The Plum Lightpad must be connected to the Load wire.

Once you have identified the Hot/Load side then you can determine how to use the travelers.  Turn the breaker off before installing the Plum Lightpad

This instruction assumes that you have black and red traveler wires.  If your traveler wires are different color, substitute that color in these instructions.

Installing the Plum Lightpad on the Load side

To install the Plum Lightpad on the Load side, connect the Load wire to the red Plum wire.  If there is a hot wire in the Load side box, that hot wire should be connected to the black Plum wire.  If there is no hot in this electrical box, connect the black traveler wire to the black plum wire.  If there is a neutral wire in this box, connect that neutral wire to the white Plum wire.  If there is no neutral wire in this box, connect the red traveler to the white plum wire.

Disconnect the wires on the Load side switch.  If there was not a Hot wire in the Load side switch box, connect the Hot wire to the black traveler.  If there was not a neutral wire in the Load side switch box, connect a Neutral wire to the red traveler.  Cap any wires that are not used.  You may reinstall the disconnected dumb switch in the Hot side box if you want, or put a blank insert in the hot side switch plate.

Installing the Plum Lightpad on the Hot side

To install the Plum Lightpad on the Hot side, connect the Hot wire to the black Plum wire.  Connect the red traveler to the red Plum wire.  If there is a neutral wire in this box, connect that neutral wire to the white Plum wire.  If there is no neutral wire in this box, connect the black traveler to the white plum wire.

Disconnect the wires on the Load side switch.  Connect the Load wire to the red traveler.  If there was not a neutral wire in the Load side switch box, connect a Neutral wire to the black traveler.  You may reinstall the disconnected dumb switch in the Hot side box if you want, or put a blank insert in the hot side switch plate.

installing-a-plum lightpad in a 3-way with a-dumb-switch

2018-03-06T02:49:55+00:00