how do I replace switch that has black red white and copper wire?

[jsutme]

some newbie questions:
1. is the black wire always hot?
2. is this a 3 way switch based on the number of wires?
3. which side does the white and red wires go?

[machinist]

Hi!

Is the black wire always hot?
Not always, but usually black wires are hot (they carry the current). However, there are exceptions, like in a 3-way switch setup where black might not always mean “hot.” It's super important to double-check with a voltage tester before assuming anything. Electricity can be tricky!

Is this a 3-way switch based on the number of wires?
Maybe! A 3-way switch typically has three wires—usually black, red, and white (plus a ground wire). If you see two switches controlling one light, it’s probably a 3-way setup. But just counting wires isn’t a surefire way to know, it’s about how those wires are connected.

Which side do the white and red wires go?
It depends on what you’re wiring!

• The white wire is usually neutral and goes on the silver terminal.
• The red wire is often a traveler in a 3-way switch setup, connecting to a brass or similar terminal.

The key is to follow the wiring diagram that matches your specific situation or device. Hope this helps!