Quick Answer
Wire a MAXWELL Smooth Intermediate Toggle Switch between two existing 3-way switches to control a light from three or more locations. Follow the steps below for safe, reliable installation.
Understanding Intermediate Switch Wiring
An intermediate toggle switch works with standard 3-way (two-way) switches to add extra control points. The MAXWELL Smooth Intermediate Toggle Switch is designed to be wired between two 3-way switches, not as a standalone switch. You must already have a working 3-way circuit before adding this switch.
Common Mistake: Using the Wrong Switch Type
A common error is confusing an intermediate switch with a standard 3-way switch. An intermediate switch has four terminals (usually labelled A, B, C, D) and is wired differently. Using a standard 3-way switch in the intermediate position will not work. Ensure you have the correct MAXWELL Smooth Intermediate Toggle Switch for the job.
Step-by-Step Wiring Guide
- 1. Turn Off Power and Verify Circuit: Switch off the circuit breaker for the lighting circuit at the main panel. Use a non-contact voltage tester to confirm power is off at the switch box where you will install the intermediate switch. Never skip the voltage test. Even if the breaker is off, always verify with a tester.
- 2. Prepare the Wires: Remove the switch plate and carefully pull out the existing wires. You will typically find two traveler wires (usually black and red) that run between the two 3-way switches. Do not disconnect the common or ground wires from the 3-way switches unless you are also replacing them. Label the traveler wires with tape to avoid confusion later.
- 3. Connect the Traveler Wires to the Intermediate Switch: The MAXWELL Smooth Intermediate Toggle Switch has four terminals. Connect one traveler wire to terminal A and the other traveler wire to terminal B. Then connect the remaining traveler wire from the other 3-way switch to terminal C and the last traveler wire to terminal D. The switch does not require a neutral or ground connection. Ensure each traveler wire is securely tightened in its terminal. Loose connections cause flickering.
- 4. Mount the Switch and Test: Carefully push the wires back into the box, mount the MAXWELL switch to the plate, and secure the plate. Restore power and test the light from all switch locations. If the light does not turn on or off from one location, recheck the traveler wire connections. If the light only works from some locations, you likely swapped the traveler wires on one side. Swap terminals A and B (or C and D) and retest.
Product Facts
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MAXWELL Smooth Intermediate Toggle Switch - Brass: Control a light from three or more different locations with our Smooth Intermediate Toggle Switch. Pair with a plate of your choice. This switch is the key to adding extra control points in a multi-location lighting setup, allowing you to turn lights on or off from hallways, landings, or room entries.
MAXWELL Smooth Intermediate Toggle Switch - Brass