The neutral requirement is to provide power to the device itself. This is unlikely to work in most houses in Australia as light switches are generally wired “double active”, so don’t have a neutral wire (or earth for that matter).
Do you need a neutral wire for a light switch?
The most common requirement of any hardwired automated light switch is a neutral wire. Yes, there are a few… (read very, very, very few) switches that don’t require a neutral, but those will limit you to incandescent only. … This is a diagram of a switch with the neutral run directly to the light.
What happens if a light switch doesn’t have a neutral wire?
The neutral wire allows the completion of the circuit and the switch to have power even when it’s turned to the off position when you want the lights off. Without this neutral wire in place, the circuit is broken any time the switch is now in the off position. It remains has power when the switch is in the On Mode.
How do I know if my switch has a neutral wire?
Checking The Switch Box
- Turn off your breaker box.
- Take off the trim plate over the switch.
- Remove the screws from your switch and pull out the existing switch to look at the wires.
- If you see a white wire (or group of them), it is VERY likely that you have a neutral in that switch box.
Do all 3 way switches have a neutral wire?
Well you’re in the right place for a 3-way. The most common wiring requirements of any hardwired automated 3-way light switch is a neutral wire and a traveler. Yes, there are a few… (read very, very, very few) switches that don’t require a neutral, but those will limit you to incandescent only.
Can I use ground as neutral?
a ground and a neutral are both wires. unless they’re tied together with other circuits, and not a ‘home run’ back to the panel, there is no difference between the two where they both end up on the same bus bar in the box.
Can I use the neutral wire from another circuit?
No, you can’t steal a neutral wire from another circuit. Each neutral wire is the return for the corresponding hot. If you “steal” a neutral from another circuit you run the risk of overloading that neutral wire (overheat, fire risk).
Will a light work without a neutral?
Can a light work without a neutral? Sure, but if you have no neutral you have to have something else to return lightbulb current to. … Then, you need two light bulbs to handle the voltage and you need to wire them in series. If you do that they should work just fine.
What happens if I don’t ground a light switch?
So there you have it, your home may opt for screws, cables, or grounded boxes, but your switches should all have a ground outlet to ensure your safety is secured. Without it, you put your body at risk of completing a circuit holding lethal electrical charges.
Do old homes have neutral wires?
In most modern homes in the U.S., if you open your light switch box, you’ll find four wires: load, line, neutral, and ground. … Without a neutral wire, they don’t work, and that’s a problem because most older homes don’t have neutral wires. Instead, you’ll only find load, line, and (hopefully) ground wires.
What happens if neutral wire is grounded?
If the grounded (neutral) service conductor is opened or not provided at all, objectionable neutral current will flow on metal parts of the electrical system and dangerous voltage will be present on the metal parts providing the potential for electric shock.
What is the purpose of the neutral wire?
Neutral wire carries the circuit back to the original power source. More specifically, neutral wire brings the circuit to a ground or busbar usually connected at the electrical panel. This gives currents circulation through your electrical system, which allows electricity to be fully utilized.
Are there any smart switches that don’t require a neutral wire?
There are dimmable smart switches on the market that can be installed without a neutral wire. … The Caseta switch works with Wink and the Caseta Smart Bridge (the Caseta Smart Bridge allows the switch to interface with Alexa, Apple HomeKit, and Google Home).
What wire goes to the black screw on a switch?
As marked before from the original switch, one wire (either power in, or the wire to the light fixture) goes to the black terminal, two wires go to the brass screws, and the bare copper wire (not visible here) goes to the ground screw.