It depends - if a single circuits' neutral is disconnected then anything downstream will not work - there is no return path for power. If it is the neutral for a milti-wire circuit (such as the neutral - and ground - connection at the main panel) then you run the risk of creating a voltage imbalance if there are any 220v devices running. That's because a 120v load is using the other hot leg as a return path - through the 220v device. Clear as mud, huh? Suffice to say it is a bad thing. I have seen many instances in which office equipment has burned up due to bad connections in a multi-wire power pole.
An open neutral means the neutral wire is disconnected or broken. You will have to remove the outlet and find out which is the case. The wire may also be broken.
a loose connection of a neutral wire
The neutral wire and power wire are never connected together.
If they are grounded they get an electric shock or electrocuted. If they are not grounded or in simultaneous contact with the neutral wire, nothing. That's why birds can sit on a high voltage wire and survive; they are not grounded.
Yes <<>> In North America, a three wire 120/240 volt system uses a neutral wire. For 240 volts two "hot" wires are used with no neutral.
There is nothing to save. When the neutral wire becomes disconnected the equipment just stops operating. Disconnect the power supply, reconnect the neutral and the equipment will start operating again.
An open neutral means the neutral wire is disconnected or broken. You will have to remove the outlet and find out which is the case. The wire may also be broken.
If the neutral wire is disconnected, appliances may still work due to the complete circuit path provided by the hot wire. However, this can be dangerous as the voltage may not be stable, causing potential damage to appliances and posing a risk of electric shock to users. It is important to have a properly connected neutral wire in an electrical system for safe and efficient operation of appliances.
when the wire is disconnected from the dry cell you feel not hot
If a "hot" wire contacts the "neutral" or ground wire, electrical current flows to the ground.
'Can' yes. 'Should' no. <<>> Never use a green wire for a neutral. It is colour coded for a reason and that is to protect the people that work on electrical equipment. If you turn a ground wire into a neutral it then becomes a current carrying conductor. There are times in the electrical trade when grounds have to be disconnected and if it is used as a neutral and the tradesman is holding one end and touching a grounded object a shock will occur. Again never use a green ground wire as a neutral.
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a loose connection of a neutral wire
You have some serious wiring problems, for sure. My first guess is that your grounding conductor and neutral are touching somewhere and your ground is acting as the neutral when the neutral is disconnected. The light coming on when the hair dryer is used is another mystery. You need to hire a competent electrician to trouble shoot these problems.
Typical home wiring will have one hot wire, one neutral wire, and one ground wire per circuit. An open neutral would indicate that the neutral wire, usually white wire, is broken.
If wired properly the ridged wire is the neutral.
The neutral wire is typically colored white or gray.