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 Can u reverse live and neutral ?

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vapanel
post Sep 18 2023, 06:13 PM

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QUOTE(hightechgadgets8 @ Sep 18 2023, 05:48 PM)
Reversing the live and neutral connections in an electrical circuit can have serious consequences and should never be done. In a standard electrical wiring configuration, the live wire (also known as the hot wire) carries the electrical current from the power source to the appliance or device, while the neutral wire provides a return path for the current to complete the circuit. This configuration is designed to ensure safety and proper functioning of electrical devices.

If you reverse the live and neutral connections, several potential issues and dangers can arise:

Electrical Shock: Reversing the connections can lead to the appliance or device becoming live even when it's switched off. This can result in electric shocks if someone comes into contact with it.

Appliance Damage: Many electrical appliances are designed to work with the live and neutral wires connected in a specific way. Reversing the connections can damage the appliance or cause it to malfunction.

Fire Hazard: In some cases, reversing the connections can increase the risk of overheating and potential fire hazards. It can also disrupt the operation of safety mechanisms built into electrical devices.

Violation of Electrical Codes: Electrical codes and regulations typically require proper wiring connections to ensure safety. Reversing live and neutral wires would be a violation of these codes.

Inaccurate Polarity: Reversing the connections can lead to incorrect polarity in electrical circuits, which can affect the performance of sensitive electronic devices and cause issues with lighting fixtures.

To sum it up, reversing the live and neutral connections is dangerous and can lead to electrical hazards, appliance damage, and safety violations. If you suspect a wiring issue or need electrical work done, it's essential to hire a qualified electrician to ensure that the wiring is correctly installed and compliant with safety standards.
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If live still disconnect if you off the switch

Stupid article
pureawesomeness
post Sep 18 2023, 06:14 PM

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Reversing plugs with only two wires (live and neutral) is generally considered acceptable because the wiring for these plugs is designed to accommodate either orientation. These plugs are often used for appliances and devices that don't have a specific polarity requirement, such as lamps, toasters, and many small household appliances.

In such cases, the design of the plugs and sockets ensures that the appliance will function safely regardless of how the plug is inserted. This design simplifies the connection process for users and reduces the likelihood of errors.

However, it's crucial to note that even though it's generally acceptable to reverse two-wire plugs, this doesn't apply to three-wire plugs, which also include a ground wire. The ground wire serves a vital safety function and should always be connected correctly to ensure electrical safety.

So, while reversing two-wire plugs is typically fine, it's essential to be cautious and follow proper wiring practices for three-wire plugs to maintain safety and prevent electrical hazards.
DarkAeon
post Sep 18 2023, 06:15 PM

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if u dunno what u r doing, get professional help
alexander3133
post Sep 18 2023, 06:15 PM

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QUOTE(samjet @ Sep 18 2023, 05:53 PM)
but it is alternating current we are talking.... polarity changed all the time.. no?
sorry if i noob
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The problem most concerning is the safety issue.
When you turn off the switch at the socket, with plug still on the socket, normal socket switch only cut off live wire, neutral wire still connected to the plug, and hence your appliance.

So if you reversed the life and neutral wire, the switch will just cut off neutral wire woth live wire still connected to your appliance.

So if somehow your earth or ground is not working and you touch yiur appliance, you might get shock from live.
vapanel
post Sep 18 2023, 06:16 PM

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QUOTE(Xploit Machine @ Sep 18 2023, 06:11 PM)
will not work .. in the case 3 pin u must follow L-N properly, but in 2 pin devices it has in-built component to trans-verse the electrical source, if you still try change the polarity in 3 pin plugs, the ELCB will trip ..
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How? I thought our appliances is just load

Need to follow one?
vapanel
post Sep 18 2023, 06:18 PM

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QUOTE(alexander3133 @ Sep 18 2023, 06:15 PM)
The problem most concerning is the safety issue.
When you turn off the switch at the socket, with plug still on the socket, normal socket switch only cut off live wire, neutral wire still connected to the plug, and hence your appliance.

So if you reversed the life and neutral wire, the switch will just cut off neutral wire woth live wire still connected to your appliance.

So if somehow your earth or ground is not working and you touch yiur appliance, you might get shock from live.
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I assume he reverse appliances wire

Not the live wire in socket

Else he really stupid lol
Xploit Machine
post Sep 18 2023, 06:19 PM

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QUOTE(vapanel @ Sep 18 2023, 06:16 PM)
How? I thought our appliances is just load

Need to follow one?
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no, just give it a try biggrin.gif
march173
post Sep 18 2023, 06:20 PM

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If your device doesn't have DC circuit inside, it should work fine.
vapanel
post Sep 18 2023, 06:21 PM

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QUOTE(march173 @ Sep 18 2023, 06:20 PM)
If your device doesn't have DC circuit inside, it should work fine.
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Talk cock la

Where got such limitations when we only talk about ac



All fake EE engineer replying

This post has been edited by vapanel: Sep 18 2023, 06:22 PM
march173
post Sep 18 2023, 06:52 PM

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QUOTE(vapanel @ Sep 18 2023, 06:21 PM)
Talk cock la

Where got such limitations when we only talk about ac
All fake EE engineer replying
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Thats why I saying if it doesnt have DC circuit inside. If just AC, no issue.

vapanel
post Sep 18 2023, 07:03 PM

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QUOTE(march173 @ Sep 18 2023, 06:52 PM)
Thats why I saying if it doesnt have DC circuit inside. If just AC, no issue.
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but doesn't make sense to say that because the circuit connect to AC will be AC circuit.

DC circuit is after the ACDC conversion.
knumskul
post Sep 18 2023, 07:19 PM

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Somebody didn't pay attention in Kemahiran Hidup
rcracer
post Sep 18 2023, 08:10 PM

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Yes can, those black 2 pin plug, how do you know neutral or live, just smash it in
LaiN87
post Sep 18 2023, 08:26 PM

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Simple motor, fan can just swap the polarity. L-N or N-L.

Complex electronics like amplifier / TV / Apple TV, have the L-N interchangeable.
The short answer is yes, it's interchangeable regardless if the electronics have DC circuit inside.

But 1 time I found that L-N wrongly cause an issue.
My Microsoft Surface Book. Wrong polarity cause surge issue on the body of the laptop. I get electrocuted.
I need to swap it.

My USB-C charger. Wrong polarity cause leakage current. I get electrocuted if touch the USB-C / lightning cable.
I need to swap it.

So it's not so simple as can interchange it.
But it will work.
ar188
post Sep 18 2023, 08:26 PM

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equipment should work, but shouldnt do it for human safety.. cos wall switch on/off /fuse is only connected to live side.

QUOTE
This is an answer for users of 230V in Europe. In Europe we have Live (brown) and Neutral (Blue). If you touch a neutral wire (not a good idea), then in theory nothing will happen. If however, you touch a Live, you will get a 230V shock (really bad news). It only takes 50mA (0.05A) to kill you, so be careful! If you swap live and neutral which are connected to a lamp, yes it will work fine. However, the switch on the lamp is connected on the Live side. So even though you have switched the lamp off, you have only broken the neutral return path and the light itself is still live. Since the earth is also a valid return path, you could still get a shock between Live and Earth of Live and just standing on the ground (unless you have very wet insulated rubber boots).

UK plugs all have three pins, even 5amp light plugs. This ensures the neutral and earth are always connected the same way around. In mainland europe, many things have just two pins and these can be inserted either way around. I prefer the UK system as it is safer.


QUOTE
You could do it but you should not. Swapping the wires will not have any effect on your circuits. They will keep running as usual and you can switch them on/off with the switches as you did earlier. But it is dangerous to swap the live and neutral wires.

Very.

Neutral wires are at low potential and grounded at the substaion transformer so they pose no risk of giving electric shock to you. Now, all the switches are connected in the live wire. So once you turn the switch off, your appliance is effectively disconnected from live feed and safe. If you swap the wires, even though the switching off will break the circuit, the appliance be still connected to the high potential live wire and a seemingly inert appliance can give you a nasty electric shock.

jueiri
post Sep 18 2023, 08:36 PM

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QUOTE(qsub @ Sep 18 2023, 06:09 PM)
if u reverse live and neutral, ur reading electric meter will reverse too!
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Electric meter reverse?

Do ayam get money from TNB? biggrin.gif
spacelion
post Sep 18 2023, 08:44 PM

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QUOTE(magnor @ Sep 18 2023, 05:46 PM)
I think TS confused ground/earth wire with neutral. Not the same.
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But u definitely cannot reverse the live and ground wire wor
lagenda110
post Sep 18 2023, 08:48 PM

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QUOTE(narf03 @ Sep 18 2023, 05:39 PM)
What will happen when you reverse the live and neutral connection ?

Some device come with 2 pins connector, those i think reversing them has no problem.

But lets say some devices come with 3 pin plug, what will happen if i do reverse the live and neutral wire ?
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ur breaker will trip..or your plug will explode first haha
kamfoo
post Sep 18 2023, 09:39 PM

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Can
Xploit Machine
post Sep 18 2023, 09:45 PM

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QUOTE(ar188 @ Sep 18 2023, 08:26 PM)
equipment should work, but shouldnt do it for human safety.. cos wall switch on/off /fuse is only connected to live side.
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"This is an answer for users of 230V in Europe. In Europe we have Live (brown) and Neutral (Blue). If you touch a neutral wire (not a good idea), then in theory nothing will happen. If however, you touch a Live, you will get a 230V shock (really bad news)."

dont ever trust NEUTRAL point .. in some cases there will be "return" current in there too smile.gif

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