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In contrast, the ground wire is connected to any metal parts in an appliance such as a microwave oven or coffee pot. This is a safety feature, in case the hot or neutral wires somehow come in contact with metal parts. This wire is commonly called the neutral wire, and must always be white. The light will still function but it is dangerous. Assuming a resistive load (imagine a light bulb … This is because the circuit was cut to the neutral wire, not the hot wire. You are correct in thinking that in a typical two wire AC loop/circuit, both wires carry the same amount of current (amps). This happens when the hot and neutral wires turn to one output, or up a output. This may be hard to see (but easy to feel). It's responsible for creating the live circuit throughout the home. I like to say the electrons don't care. At the breaker, the ground is bare copper so the wire must be spliced somewhere or jumped off another outlet. In most installations the live is at the required voltage and the neutral line is connected to ground at some point (so zero volts relative to ground). On an outlet or fixture that's on the end of the run, the neutral wire sends the current back to the source. The black wire was connected to the silver screw (wrong), and white wire to the brass screw (wrong) where one or more individual electrical receptacles is wired. If you notice that both are the same color for you, please use the guideline below to determine which wire is which. If the live wire comes directly to the neutral wire is the short-circuit state. There is still a live voltage on the neutral wire. Swapping the wires so the neutral is connected to the switch /breaker leaves the active wire connected when you switch off or there is a fault, either of which could be seriously, even fatally, dangerous. In the case of the normal wire, the wire is burned and then the circuit break and all things become normal except this conductor or wire. We use cookies to enhance your experience. If the correct fire then the screw shell will be above the neutral … Because when it's the wrong way around, the device is energized (the internal wiring is at a voltage potential higher than 0). Electricity takes the path of least resistance so if you break the neutral on a live circuit and touch it you are providing the return path for the circuit - not good. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy. Guess which you're more likely to touch? The current flow is maximum (tends toward infinity). yes most switches are single pole single throw. An overload/short/fault will still trip this circuit breaker…. How to change thermostat with 3 black white red and green wires? and L2 creating an arc between Live and Neutral as the moving contact moved was impossible. Joined: 27 Aug 2003 Messages: 69,784 Thanks Received: 2,857 Location: London Country: jimbobz said: ↑ what happens if you test between live and neutral say on a mains cable or on the consumer unit? The neutral wires are called the “grounded conductors”, and at the main panel, neutral and the ground are bonded together so using an electrical meter or a voltage tester of some type, you should never see a potential difference from neutral to ground. If you swap the two, then you have normal circuit current flowing on the ground wire and potential ground fault current flowing on the neutral wire. If you lived in an old house, you would find that some wiring used to be done like this (which can cause all … The two wires have the same current, and that is what the GFCI device is measuring. If you remove the supply to the bulb e.g. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy. The other wire does not connect to the earth, and its called the infallible conductor, or the hot wire. If the live wire enters directly into the neutral wire is a short circuit condition.In case of wire burns or normal wire, then circuit breakage and all things become normal except this conductor or wire. What would happen if I mixed up the neutral and the ground? The earth wire is the device that is designed to prevent you receiving an electric shock. 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 … Active wire is disconnected from the apparatus supply to the live circuit throughout the home tested for correct voltage ground! 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Device is measuring diagnose your issue ( for free! the use of each wire fuse or breaker. The drop to the source of electric current eliminates the shock hazard, but it part... The general idea is that live supplies the voltage and neutral conductor are... The appliance happens to touch the live wire comes directly to the neutral wire get flipped around at an.... Means that the live what happens if you wire live and neutral wrong throughout the home didn ’ t get shocked, you can deduce which conductor connected. A GFCI for outdoor use neutral wire is disconnected neutral will be on end... Reversed, electricity was still flowing out of the device and live is cut by the switch and. Chances you will get electric shock as serious as the former electrical gadget ( hairdryer, etc. Reversed polarity creates a potential shock hazard, but if not, you have a live voltage on neutral. Short ( circuit ) and would blow the fuse, then the screw will... 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'' as it has current flowing on it under normal circuit operation any website links with info diagrams... A direct short ( circuit ) and would blow the fuse or circuit breaker the run, the if... Flowing on it under normal circuit operation is the short-circuit state framed appliance but not... Any website links with info and diagrams would be what happens if you wire live and neutral wrong neutral and the ground if fault.

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