Open hot just means that the wire that should be hot is not connected to the power supply. The neutral and ground are possibly still connected. You should check continuity between the outgoing (switched hot) wire at the switch and the red wire (going to the top receptacle) at the receptacle..
Similarly, you may ask, is an open hot circuit dangerous?
Leaving an open hot wire could cause problems in your wiring system. Beyond that, though, if a wire is not supposed to be open and hot, there is a risk that it could start an electrical fire.
Also Know, what causes an open hot circuit? Open hot just means that the wire that should be hot is not connected to the power supply. The neutral and ground are possibly still connected. You can then remove the switch and cap of the wires that go into it. If there is continuity then you should be able to replace the switch and the receptacles will work again.
Moreover, how do you fix an open hot in a house circuit?
How to Find an Open Hot in a House Circuit
- Open the door to the circuit panel and make sure that all of the breakers are on and that none have been tripped.
- Find an electrical outlet or see if there are any exposed electrical wires in the area.
- Hold the electrostatic wand to the wire or cable until the indicator light comes on or a sound is heard.
What causes an open neutral circuit?
An open neutral occurs in the panel when a break occurs in the neutral wire that connects the panel to the line transformer. The main effect is that the lights in the house dim and get brighter for no apparent reason. Some lights may get bright enough to burn out.
Related Question Answers
How do you fix an open neutral?
Re: How do I fix an open neutral? Check the neutral bus bar in the load center. Look for loose wires, or just go down the row and tighten all the screws. It is either at the receptacle, at the panel, or along the way where someone has wire-nutted the neutrals together (loosely).Will an open neutral trip a breaker?
If the voltage from the hot wire to the lifted neutral wire is above 0 volts, there is a ground fault on the lifted neutral wire. The readings taken here show that the neutral connections from the utility to the breaker box are ok; and that the neutral is open somewhere in the branch circuit neutral.What to do if an outlet is hot?
1. The most important thing to do if an electrical outlet is hot is to find the circuit breaker that controls that outlet, and turn it off. 2. Then unplug everything from the hot outlet. What does an open neutral mean?
Open Neutral If the tester is correct, this means the receptacle is not working because, even though the black wire is hot, the white (neutral) wire is not connected well somewhere, so that it cannot carry any current "back" to the main panel.Can a bad outlet cause an open ground?
Newer Wiring In homes where all the outlets were installed with a ground, any failure of the ground must be corrected by replacing the failing outlet, or replacing and/or reconnecting the ground wire. In many cases the open ground on one outlet is the result of a disconnected wire at another outlet.What does it mean when you have an open ground?
An open ground is when you have a three-prong receptacle that is not connected to an equipment grounding conductor. This is unsafe because an appliance that is designed to use an equipment ground to discharge an unsafe fault condition will not have a conductor to discharge that fault.What does an open wire mean?
open wire - Computer Definition Referring to a metallic wire pair circuit comprising uninsulated electrical conductors. The conductors are physically separated, attached to insulators of glass, ceramic, or plastic mounted on crossarms that are attached to poles or towers.Will an outlet work without a neutral?
Yes it can work but the chances of getting a shock from the device increases. The neutral wire provides a path for the flow of fault current at the time of short circuit fault. In the absence of a neutral wire, the device might get damaged due to unavailability of a path for the flow of fault current.What does Hot neutral reverse mean?
This happens when the hot and neutral wires get flipped around at an outlet, or upstream from an outlet. Reversed polarity creates a potential shock hazard, but it's usually an easy repair. This wire is commonly referred to as the neutral wire, and it should always be white.What is a hot ground reverse?
Hot/ground reversal often means a missing neutral. Missing neutral would cause the receptacles (and lights) to not work but still activate a proximity voltage detector.What is a hot wire?
Electrical Wires The black wire is the "hot" wire, which carries the electricity from the breaker panel into the switch or light source. The white wire is the "neutral" wire, which takes any unused electricity and current and sends them back to the breaker panel.How do you wire a GFCI?
Install the new ground-fault circuit interrupter outlet by attaching both the black and white wires to the "line" side of the outlet. Connect the bare wire to the grounding screw. Replace the cover plate, then check to make sure the GFCI is operating properly. Press the test button; the outlet should go dead.Why does my neutral wire have voltage?
Because the resistance of the copper neutral wire is usually very near zero, this also keeps the voltage low. However, if the neutral wire is damaged or has a high impedance fault like a corroded connection, the voltage in the neutral can increase to a dangerous level at some point out in the branch circuit.Is it normal for a plug to get warm?
While it is normal for an appliance plug to become warm, it is abnormal for such a plug to get hot. To provide enough power to operate the appliance, more power must pass through the plug or outlet to reach the appliance. Most of the increased power is converted to waste heat, and the plug becomes hot to the touch.Can you change outlet without turning off power?
No need to touch the bare wire when changing an outlet, unless it is packed tight in the box or ridiculously short wires (which you about have to kill the power to deal with then). I'd hate to guess how many outlets I've changed over the past 28+ years as an Electrician without turning off the power to the outlet.Can you rewire a house without removing drywall?
Thankfully, there is an alternative to tearing down walls. It is possible to rewire your home without removing the drywall. The method used by the electrician is to find a crawlspace to feed the wire through the wall.Is a hot outlet dangerous?
Your fuse or breaker may be rated too high, which allows for more electricity to pass through your circuit (wires in the wall). This is a potential fire hazard, and a warm outlet may be a warning sign that your circuit is operating above its amperage rating. This is dangerous and can, in some cases, start a fire.What causes a wall outlet to get hot?
A Loose connection will start to heat up an outlet by causing electricity to travel through an air gap or a smaller strand of wiring. When wiring loosens the electrical connection to the outlet will rely on fewer strands of wiring. This causes your outlet to get hot and increases the chance of a fire. 
