How Did My Ground and Neutral Become Energized by a Short in the Buried Main Line?

I think the power guy's assessment was spot-onHe said it appeared that the buried cable coming in from the street had degraded or been damaged and that the "hot must have nipped the neutral."What was happening is that the incoming hot probably contacted the ground indirectly via the insulation failing in some fashion. Your neutral bonds with the ground in your main service panel, and are fed into a series of grounding rods near your panel. As such, your panel and all electrical switches and receptacles attach to this point (via grounding wire) and the powerful draw of the service neutral prevents it from flowing through you instead (which is why you don't bond ground and neutral anywhere else).What it sounds like is that the shielding on the incoming service wire degraded and was able to put that power into the ground nearby, which was then picked up by the grounding rods (this process would be amplified if the ground was wet from recent rains). This then reversed the process, where your ground and neutral now became live. This is evidenced byWhat, if anything, I need to do to ensure there are no hazardous conditions in my homeIt wouldn't hurt to have an electrician come out and inspect the panel. I wouldn't open a main panel myself, since the incoming hots from your power company cannot be turned off by you (that main breaker just cuts power to the rest of the panel). Specifically, make sure nothing in the panel was damaged, and that the ground and neutral bond look OK.

Next, take your contactless tester and try them against a ground and neutral wire. You shouldn't get any reading from them (unless electricity is flowing through your receptacle from a downstream source). A wiring tester would also help in this case.

Once the power company has permanently replaced the wire, you should be just fine

Long post, because I'm not sure what information is critical. The ultimate question is what, if anything, I need to do to ensure there are no hazardous conditions in my home.

Friday night, the lights flickered for 10 seconds and then the house lost power. (Mostly, it turns out.) No other house on the block lost power. I went out to the service panel. I could see the meter was not on.

When I touched the service panel, I got a shock and dropped the door. I got my no contact tester (not a volt meter but the light up stick) and it lit up and beeped when I touched the panel box. I turned the main breaker off with a wooden spoon. I touched the box again and it again showed voltage even with the main breaker off. I then started testing other things. It lit up on the ground wire. It lit up on the hose bib. I yelled into the house and told everyone not to move. I tested the door handle and it was ok. I got everyone and the dog out of the house and into the car for warmth and called the power company.

I went back in with the tester, testing everything before I touched it. Pretty much every thing I tested in the house that was connected to the electrical system showed a positive test. The outside of the metal oven. The frame of the tv. Metal lamps (the actual lamp, not just the cord.) A laptop that was plugged in (the laptop itself.) Each switch cover. Most peculiar, low power led lights in our range hood were on at about 20 percent their usual strength. (They are not on a batter back up.) The GFIs in my kitchen were tripped, but their lights were on, showing red (not green, as usual). The refigerator was getting some power, very weakly.

The guy from the power company got there a few hours later. He was initially confused about what was going on. He asked whether we had any solar or batteries or generators that could be "backfeeding" the electrical system. (We don't.) He unscrewed the lines feeding the house from the meter. As soon as he disconnected the last of them, everything stopped testing positive with the non-contact voltage meter. The lights in the stove went out. He tested each of the wires that were coming in from the street, which had been disconnected from the meter. It appeared to me, but I'm not sure because I was standing a respectful distance away, that he got a voltage reading on the neutral. He said it appeared that the buried cable coming in from the street had degraded or been damaged and that the "hot must have nipped the neutral." I wanted to ask more, but I also wanted to let him do his thing.

He ran a temporary above ground cable that restored power and said the company would install a new underground cable from the street this week. He cleared us to go back in the house. I tested things with my voltage meter and it was all ok. Everything was working fine, except the high speed internet. The guy from cox came yesterday. He found that the connector from the box across the street, which feeds the line to my house, was completely fried and melted. He said he had never seen that, but that it had "done its job." I think he was saying that the coaxial cable is grounded at my house and so current must have zapped it along the ground? I don't really understand. I looked at where the coax enters my house and there is a box on the outside of my house with a ground wire that comes out of the box and is clamped to a copper water line.

Anyway, seeing the melted cable freaked me out a little.

I did a bunch of reading on what could cause a house to have power if the main breaker is off. None of it makes sense. And how would my copper plumbing show positive? And why didn't any of my breakers trip?

Let's say that the insulation between the hot and neutral wore out beneath the ground, feeding my house. Could this explain it? That would put current on the neutral coming into the house. Could that serve as power to everything the house and the grounding system that flows independent of the breakers? Why wouldn't that be a short circuit that would trip a fuse or breaker in the transformer box at the street?

Anyway, the "why" is less important to me than understanding if there are likely to be unseen dangers in the house as a result of this incident and what, if anything, I can do about that. I guess the power company guys will be back to re-install cable to my house and I can ask them, but I'd like to be educated. I can't find anything like this on the internet. Many thanks.

·OTHER ANSWER:

Long post, because I'm not sure what information is critical. The ultimate question is what, if anything, I need to do to ensure there are no hazardous conditions in my home.

Friday night, the lights flickered for 10 seconds and then the house lost power. (Mostly, it turns out.) No other house on the block lost power. I went out to the service panel. I could see the meter was not on.

When I touched the service panel, I got a shock and dropped the door. I got my no contact tester (not a volt meter but the light up stick) and it lit up and beeped when I touched the panel box. I turned the main breaker off with a wooden spoon. I touched the box again and it again showed voltage even with the main breaker off. I then started testing other things. It lit up on the ground wire. It lit up on the hose bib. I yelled into the house and told everyone not to move. I tested the door handle and it was ok. I got everyone and the dog out of the house and into the car for warmth and called the power company.

I went back in with the tester, testing everything before I touched it. Pretty much every thing I tested in the house that was connected to the electrical system showed a positive test. The outside of the metal oven. The frame of the tv. Metal lamps (the actual lamp, not just the cord.) A laptop that was plugged in (the laptop itself.) Each switch cover. Most peculiar, low power led lights in our range hood were on at about 20 percent their usual strength. (They are not on a batter back up.) The GFIs in my kitchen were tripped, but their lights were on, showing red (not green, as usual). The refigerator was getting some power, very weakly.

The guy from the power company got there a few hours later. He was initially confused about what was going on. He asked whether we had any solar or batteries or generators that could be "backfeeding" the electrical system. (We don't.) He unscrewed the lines feeding the house from the meter. As soon as he disconnected the last of them, everything stopped testing positive with the non-contact voltage meter. The lights in the stove went out. He tested each of the wires that were coming in from the street, which had been disconnected from the meter. It appeared to me, but I'm not sure because I was standing a respectful distance away, that he got a voltage reading on the neutral. He said it appeared that the buried cable coming in from the street had degraded or been damaged and that the "hot must have nipped the neutral." I wanted to ask more, but I also wanted to let him do his thing.

He ran a temporary above ground cable that restored power and said the company would install a new underground cable from the street this week. He cleared us to go back in the house. I tested things with my voltage meter and it was all ok. Everything was working fine, except the high speed internet. The guy from cox came yesterday. He found that the connector from the box across the street, which feeds the line to my house, was completely fried and melted. He said he had never seen that, but that it had "done its job." I think he was saying that the coaxial cable is grounded at my house and so current must have zapped it along the ground? I don't really understand. I looked at where the coax enters my house and there is a box on the outside of my house with a ground wire that comes out of the box and is clamped to a copper water line.

Anyway, seeing the melted cable freaked me out a little.

I did a bunch of reading on what could cause a house to have power if the main breaker is off. None of it makes sense. And how would my copper plumbing show positive? And why didn't any of my breakers trip?

Let's say that the insulation between the hot and neutral wore out beneath the ground, feeding my house. Could this explain it? That would put current on the neutral coming into the house. Could that serve as power to everything the house and the grounding system that flows independent of the breakers? Why wouldn't that be a short circuit that would trip a fuse or breaker in the transformer box at the street?

Anyway, the "why" is less important to me than understanding if there are likely to be unseen dangers in the house as a result of this incident and what, if anything, I can do about that. I guess the power company guys will be back to re-install cable to my house and I can ask them, but I'd like to be educated. I can't find anything like this on the internet. Many thanks.

How Did My Ground and Neutral Become Energized by a Short in the Buried Main Line? 1

مقالات مقترحة
مركز المعلومات وظائف المدونة
How Mars Solar Street Light Bring Bright and Security to Ghana School?
In the night time,if it don't have light,it will prone to have criminal behavior.If it have light,then people will be more safe.In order to provide residents with a safe living environment, the government installed street lights as much as possible.Mr. Eddie is the purchasing manager of the Ghana government unit. He often helps the government to purchase some goods in China, mostly used to build schools, churches, and public areas. In March 2018, he found our company in Google. He said that they have a solar street light project. In this solar street light project, it need to install solar street lights in every school in the city. Then can provide more safe environment for children.Before the solar street light project begin, he needed to buy two solar led lights samples and test our quality. Both solar led lights samples were shipped via DHL and he was quickly received and tested.In April, he sent me an email,tell us that the solar led lights sample have passed government's testing. He needed to buy 20 sets of 80W solar led lights installed in a school. This is a demonstration project,if it is successfully then they can promoted to schools throughout the city.Because the length of the solar lamp pole is 8M, it can't be transported by bulk cargo, so I gave him two optional. Optional 1 is buy solar panels, lithium batteries, controllers, LED lights with us, buy the poles with locally. Optional 2 is 80W solar lamp system with pole will load a 40ft container and the transportation costs will be higher. Because he has tested the quality of our solar lamp products, even if the transportation costs are expensive, he insist on buying complete solar lamp system with us,then can have the best performance for the solar lamp system.After few months operation, he sent me an email and gave feedback on the installation of solar powered lights. He expressed his satisfaction for our solar powered lights and will continue to cooperate with us in the future·RELATED QUESTIONWhat is proffesional led stage lighting?When you're putting on an occasion, whether it is an unassuming school play or a party, stage lighting rental is an unquestionable requirement. Lighting is a main thrust of your production, giving brightening, center, detail and modifying the view of the group of audience. There is nothing that so vitally passes on an inclination superior to a decent lighting system, and with boundless inventive potential, will serve as an immense advantage for your creation.Focus, position and hanging:Conventional stage lighting must be set up because of these three contemplations. Focus refers to where the light will point; position alludes to where the light will start from; hanging refers to the real demonstration of hanging the light. Shading, force and example (assuming any) should be considered next.Types of stage lighting :Ellipsoidal - these lights are the conventional stage lights and thought to be the most critical. They are centering lights, the appearance in front of an audience of which can be adjusted by screens and channels.Fresnel - these lights are utilized for shading washes on the stage.Standard Jars - these lights are the sort you will see in even the dingiest of bars. Continuously a strong choice, standard jars can get hammered, are sturdy and simple to transport.Follow spots - these are spotlights used to pursue somebody around a phase.Obviously, there are increasingly choices accessible for stage lighting with the consistent progress of innovation. Presently you have the fundamentals; here are a couple of more alternatives:LEDs - these Professional LED Stage Lightingare useful for centered pillars and have been gradually supplanting conventional globules in stage lighting.Dizzies - these lights are round circles with a few Drove lights (more often than not of varying hues) covering the surface. The circle pivots in an assortment of bearings and examples, making a whirling, confounding example, consequently the name.Gels - this term alludes to the hues given to lights. They function as shading channels, and should work in congruity with the shade of the light itself to accomplish the craved impact.Once you have got your types of lighting down, you'll have to consider where to place them. Here's an essential summary of lighting positions:Front - This is utilized for the most part for perceivability and shading impacts. Side - can be utilized to awesome impact to complement activity.Back - Additionally utilized for impact. This kind of lighting can make the dream of profundity on a phase, or notwithstanding to silhouette a man totally.
What Is Smart Solar Street Light Project?
ASKING THE RIGHT QUESTIONS: SOLAR STREET LIGHTS PROS & CONS
SOLAR STREET LIGHT ARUDRA SOLUTION
The Significance of Beautiful Handmade Best Solar Street Light
Solar Street Light Cost Comparison Guide – Choosing Solar Over Traditional
Explore the Benefits of Solar Street Lights
أفضل طريقة جديدة للحصول على أكبر ضوء الشارع الليثيوم أيون للطاقة الشمسية!
بطارية ليثيوم ضوء الشارع الشمسية: احصل على أفضل صفقة اليوم!
Overall design of grid connected photovoltaic power generation system
related searches
Frequently Asked Questions (FAQ) for Solar Street Light
Good Quality Solar Street Light Manufacturer in Punjab
What Is the Market for Solar Street Light Lazada in China?
IP66 Snail Outdoor Solar Street Light Lumussolem S3: Everything you want to know
More Mines, Fewer Schools in Former Maoist Stronghold
Vegas Street Lights to Be Powered by Pedestrian Footsteps
Catching Light in a Bottle
What Can I Do About My Strong RF Noise?
Is It Possible for a Nebula to Hide a Solar System(s) From Scientists Here on Earth?

Xingshen التكنولوجيا المحدودة

مهمتنا للعملاء:
حماية البيئة ، التصنيع الذكي.
لايوجد بيانات
الاتصال بنا

إذا كان لديك أي أسئلة ، يرجى الاتصال بنا.

Service@lumussolem.com

شخص الاتصال: درة

موبايل: 86 138 7381 4717

إضافة: مبنى دونغتشنغ ، طريق لانتشو الشرقي ، منطقة بينغشان ، شنتشن ، قوانغدونغ

Copyright © 2021 LumusSolem All Rights Reserved |Sitemap
chat online
contact customer service
messenger
wechat
skype
whatsapp
إلغاء