Most home appliances are wired for 120V (methods 1 and 2). There are 3 methods to create an electrical circuit. As the neutral has a voltage potential of 0, it is safer to work with than the “hot” wires A (120V) and B (120V). In the middle of the transformer, you can see a line with 0V - this one is neutral. The voltage difference from end A (+120V) to end B (-120V) of the transformer is a total of 240V. This is done by a transformer that converts the incoming 13.2 kV electricity to a usable 240V (image below). Before it can be used in homes, it needs to be converted to a lower voltage (240V). Most big electrical transmission lines have really high voltage electricity (about 13.2 kV =13,200V). To understand what is a neutral wire, let's use a common US wiring for example. What to do if you don’t have a neutral wire - smart switch no neutral. Do I have a neutral wire and how do I know ?.This article explains what a neutral wire is, how to make sure if you have a neutral wire, and what to do if you do not have it to install a smart switch no neutral. Otherwise, you might end up spending a lot of time and resources rewiring walls. If you do not have a neutral wire, it would be smart to choose “no neutral switch” for the project. This is especially important if you are renovating an older house or apartment. So before you are going to buy a big amount of smart light switches, make sure if your walls have the neutral wire installed. The short answer is - Yes, you should! Common smart switches require a neutral wire. what is a neutral wire? Should you care about neutral wire when choosing a switch? Now that you are considering using smart switch for your home, you will notice there are many different options available such as HomeKit smart switch no neutral wire. or Zigbee/Z-Wave no neutral smart switches. These hubs won't cost as much as an electrician, but they're still fairly costly.This article explains what is a neutral wire, how to make sure if you have a neutral wire, and what to do if you do not have it to choose a smart switch no neutral. The easiest option is to simply buy compatible smart switches, but keep in mind that many of them only work by connecting through a compatible bridge or hub, which stores programming data like your wireless network details and login. There's always the potential to get hurt, so be safe instead of sorry. We recommend you consult with an electrician before pulling out switches or starting any rewiring in your home. If your house doesn't have neutral wires, your options are to rewire your home to add neutral wires, buy and add microcontrollers inside the switches to smarten them up or buy smart light switches that work without a neutral wire or microcontroller. There's a reason why almost every smart switch needs a neutral wire attached. That's why you typically need a neutral wire, which directly connects the power source to the switch: If you turn off the lights, the circuit still breaks, but the neutral wire gives the switch its own persistent source of power. If you switch off the lights, the electric current is broken because no power is passing through the bulb. Without a neutral wire, there is a single circuit between the bulb, power source (or junction box), and light switch.
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