Why are there two black wires connected to the bottom of my three-way switch? - Home Improvement Stack Exchange

I am installing a new 3 way switch. When I open up the existing three way I see two back wires connected that the bottom, one black in the top and one white at the top. Can someone advise what the

electrical - Three way switch with two common wires? - Home

3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila

How to a Wire Double 3-Way Combination Switch Device?

Echo vs. Echo Dot: Which Alexa device should you buy?

Three Way Switches (US/Can) - The Engineering Mindset

Gebildet 3 Sets NO/NC Black Magnetic Switch Wiring

Puzzle 1 (How to Measure 45 minutes using two identical wires

The 163 Absolute Best Cyber Monday Deals (So Far!)

MulltiControl™ Connector Cable

Car amplifiers FAQ