Yes, this is normal. There are two ways to wire a two-way switch with 2-core cable like you have: one where the switch is between the supply and the light fixture(s).Dec 5, 2011

Is common the hot wire in a light switch?

The most important wire to get right is the one connected to each switch’s common screw terminal. This is the “hot” wire (usually colored black, but not always), and it brings the power from the source and delivers it to the first switch and then from the second switch to the light fixture.
Dec 11, 2021

How does a light switch work with one wire?





Quote from the video:
Quote from Youtube video: Rather than wrapping black electrical tape around the white wire in this design we do need to use more wire nuts. And one of the neutral wires will terminate within the switch.

Why is white wire hot on switch?

Here’s a rundown of electrical wires: The black wire is the “hot” wire, it carries the electricity from the breaker panel into the switch or light source. The white wire is the “neutral” wire, it takes any unused electricity and current and sends it back to the breaker panel.

When wiring a light switch where does the hot wire go?

The incoming hot wire is connected to the right switch’s common terminal. Two lengths of four-wire with ground cable, joined at the fixture box, link the right and left switch traveler terminals to each other and to the fixture.
Feb 10, 2022

What happens if I wire a light switch wrong?

But here’s the catch: If you connect the circuit wires to the wrong terminals on an outlet, the outlet will still work, but the polarity will be backward. When this happens, a lamp, for example, will have its bulb socket sleeve energized rather than the little tab inside the socket.

Why would my neutral wire be hot?





If the neutral is disconnected anywhere between the light bulb and the panel, then the neutral from the light to the point of the break in the neutral will become hot (and the device will be unpowered, because no current will be flowing through it). Look for a disconnected neutral.
Apr 12, 2018

What happens if a light switch doesn’t have a neutral wire?

Every smart switch needs a neutral wire attached because they need to stay powered all the time. Without a neutral wire, there is a single circuit between the bulb, power source (or junction box), and light switch.
May 12, 2022

Why does my light switch have 2 black and 2 white wires?

So, why are there two black and two white wires in your outlet box? There are two black and two white wires in an outlet box because the outlet is in the middle of a series circuit, accepting power from another source and sending it on. Two cables are hot wires, bringing the power in and carrying it onward to the next.
Oct 7, 2021

Why would a light switch have 2 black wires?

Black means hot, white signifies neutral, and green indicates ground. However, if you need to rewire a light switch or a plug socket, you may occasionally come across two black wires. It’s essential that you determine which black wire is hot before proceeding.

Does positive and negative matter on a light switch?



The circuit works the same no matter where you put the switch. Part of the electrical code (for house wiring) says that the switch should always go between the hot conductor and the load. This is for safety.
Dec 24, 2015

Which is the hot wire on a single pole switch?

A single-pole switch has two brass terminal screws on the side that connect to the electrical circuit’s black (“hot”) wires. One black wire comes from the power source (the electrical panel) and the other goes to one or more light fixtures.
Jun 5, 2022

When wiring a light switch what Colour is the live wire?

Blue and Yellow: Hot Wires



While these wires are live wires and carry power, you might only see yellow wires as switch legs to ceiling fans or outlets controlled by light switches. You may also see blue wires used in three- or four-way switches.
Feb 14, 2022

Can wiring a light switch wrong cause a fire?



Usually, a broken or failing light switch isn’t a fire hazard itself, but it can overheat if the contacts or the switch wear down. Sometimes a bad light switch can cause other components on the circuit, such as a bulb, to become a fire hazard by causing an intermittent current.
Jan 29, 2022

What happens if you mix up the hot and neutral wires?

This happens when the hot and neutral wires get flipped around at an outlet, or upstream from an outlet. Reversed polarity creates a potential shock hazard, but it’s usually an easy repair.
Jun 22, 2021

How do you check if a light is wired correctly?

Quote from the video:
Quote from Youtube video: And the other probe is a little bit larger. And your plug the smaller probe if your plug is wired properly is the hot side of your plug.

How do you know if a light switch is wired wrong?

If either wire at the light fixture is still hot then the switch is wired incorrectly. If one of the wires is still hot at the light fixture with the switch in the off position, then you most likely have the light switch on the neutral wire.

Does it matter which wire on a light switch?



It doesn’t matter as long as you do it the same on both switches. So, if you connect it to the upper right terminal on one switch, connect it to the upper right terminal on the other switch. Connect the second traveler wire to the terminal opposite the red wire terminal.
Nov 29, 2021

Which wire is positive when both are black?

If the multi-colored wire is black and red, the black wire is the negative wire, while the red one is positive. If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive. Look in the owner manual to determine which wires are negative in a car.

Is the black wire hot?

Hot wire is identified by its black casing. This is the main color of hot wire for most homes. However, other hot wires can red, blue, or yellow, although these colors can indicate a different function besides powering an outlet.

How do you wire a light switch with two black wires?

Connect the top screw to the wire that feeds to the light. Connect the bottom screw to the hot wire. When you turn the power back on, and if you want to swap the direction of the switch (as in press down to turn off, or turn on), turn off the power and switch the two black wires.
Jan 17, 2017