Grounding, also earthing, refers to the practice of providing a direct conductive path to the physical ground for an electric short to a chassis. Tag questions involving the installation or retrofitting of grounding with this.

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20
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4answers
12k views

Would you ever wire white and ground together?

I was replacing some outlets in my house with tamper-resistant ones, and came across one where the white and ground were wired together, as seen in this picture. Why? Is that okay or appropriate ...
11
votes
4answers
5k views

I have a 3-pronged receptacle but no ground wire connected to it. Is this ok?

I removed the plates from outlets to paint walls and noticed that some of my electric boxes have ground wires connected to outlets while others do not have a green wire at all. Is this ok? I know ...
8
votes
3answers
1k views

Is an ungrounded GFCI outlet safer than a plumbing-grounded non-GFCI outlet?

I'm in the United States. I have a handful of three-prong outlets that have been grounded to the underground water main just as it enters the crawlspace. All of the ground wires are home runs to the ...
8
votes
1answer
2k views

Can I extend an electrical ground wire with a copper wire crimp?

I am working with an electrical socket and I need extra length on the ground wire. It doesn't seem unreasonable that I can attach an extra three inches to the existing one and attach it with a copper ...
7
votes
2answers
603 views

How can I ground old 2-prong receptacles? (120V)

I have several old receptacles that are 2-prong. There is armored cable running from the breaker panel to each receptacle. What do I need to do in order to install and properly ground new 3-prong ...
7
votes
1answer
840 views

Does a device with a two prong plug need surge protection?

I have an iPhone and iPad whose power adapters are both two-prong. Since I cannot ground them in a surge protector, is it necessary that these devices even be used with a surge protector?
7
votes
2answers
807 views

What is a 'grounded neutral' and how bad is it?

I bought an electrical device a few months ago. A few weeks ago, it failed, complete with the release of magic smoke. I contacted the company, and they've had me mail it to them and have been ...
7
votes
4answers
2k views

Acceptable ground to neutral voltage?

First of all I'm pretty sure I know the theory behind the effect. I know about the inductive and capacitive coupling, about 3-phase balance problems and about ground bounce, so this question isn't ...
7
votes
2answers
1k views

How can I determine if my outlets can easily be grounded?

I'm not sure what to do here. I just moved into a building and my outlets are all 2 prong outlets. Here is what I know of for sure: All the outlets are 2 prong outlets The bathroom outlet has the ...
6
votes
2answers
746 views

How to use grounded European plug of coffee maker correctly in middle east countries?

I have bought a coffee maker with a European plug which doesn't have a grounding pin like our plugs here in Israel have. Here is a picture of the splitter I use and the European power plug: As seen ...
6
votes
3answers
2k views

Is it OK to have ground wire connected to breaker box wall instead of neutral bus?

After having issues with lights flickering, I noticed the main 100A breaker was warm and arcing slightly. Instead of just replacing the breaker, I decided to call in a electrician to install a larger ...
5
votes
4answers
4k views

What could cause the ground wire on my baseboard heater to burn?

On the photo below, you can see that the ground wire as burned. Description of what i know: the wire is connected on a 240V line to my baseboard heater the wire seems to be a AWG 14/2 I don't know ...
5
votes
1answer
2k views

Should I bond a water softener's in/out pipes?

Our house was built in 1997. The pipes are copper (including the city water supply pipe). Some time after the house was built, the previous owners installed a water softener. The softener parts are ...
5
votes
1answer
4k views

How can I determine if my receptacles are grounded, and how can I fix it if they are not?

My upstairs office has 3-prong outlets, but according to my surge suppressor, they are not grounded. I took one of the sockets off to inspect how it was wired, and it seems to have a ground wire ...
5
votes
3answers
2k views

Does a grounding wire from a breaker panel to an outside grounding rod need to be in conduit?

I've got a breaker panel in my detached garage (it is not a sub-panel, but is a primary forked off just past the meter). The panel seems to be wired correctly- the neutral and ground bars are tied ...
5
votes
1answer
292 views

Can a single metal electrical box use two ground clips?

Inside a metal electrical box, can I use multiple ground clips (one for each conductor), or is it required that all ground conductors be twisted together and pigtailed into the same clip?
5
votes
1answer
235 views

Can I obtain grounding from a different outlet?

I have a room with 2 ungrounded (2-prong) outlets and 1 switched grounded (3-prong) outlet. This has not been a serious inconvenience so far, as most of the equipment I wish to connect has ungrounded ...
4
votes
4answers
7k views

Can I safely ground a light fixture if the ceiling box has two hot and one neutral wire (no ground wire)

Checking for dupes, I saw this question, but the situation appears different as my box is metal, among other things. I'm fairly new to electrical projects, so bear with me. I recently installed a new ...
4
votes
2answers
670 views

How do I create a “ground”

I live in a old house (built in 1918), and because their was no electricity back then, all electricity was added after, and weird enough, nothing has a ground. So, I'm having problem with my ...
4
votes
2answers
394 views

Is this switch properly grounded?

I replaced a standard single pole switch with an Intermatic ST01 timer switch, into a metal electrical box with three other switches. The switch I was replacing had no ground connection, but some of ...
4
votes
3answers
441 views

Could bad grounding cause sparks and fire when connecting the cable box and TV?

I just moved into a home built in 1955. During inspection, it was noted that none of the outlets were grounded even though they had three prong outlets installed. Per our agreement, the owner ...
4
votes
1answer
169 views

Why do I hear intermittent speaker hum that goes away when I turn lights off or on?

I'm hearing speaker hum in a stereo system that I recently hooked up. I can't pinpoint when the hum begins, but I've identified that turning certain lights off or on in the same room eliminates the ...
4
votes
4answers
2k views

How can I upgrade a 3 wire appliance receptacle to a 4 wire receptacle?

I have a cabin, wired for 220 and even has a sub-breaker near the outlet. There are 3 wires to the connector (two hots and the neutral). The range-top that I want to hook up is a 4-wire model (2 ...
4
votes
1answer
1k views

How many ground rods are required for panel and subpanel?

I have a main service panel with two breakers: the main service breaker and a single large breaker to another subpanel in the same structure. All other circuits are serviced from the subpanel. My ...
4
votes
2answers
663 views

How should I ground two switches in a handy box that were previously ungrounded?

I am replacing two light switches in my bathroom. One controls the light above the sink and the other controls the fan in the ceiling. When I took the old switches out, I saw that the three neutrals ...
4
votes
2answers
363 views

How should I connect to a short ground wire in a metal box?

I live in a 50's era house that has breakers and a ground wire in every metal box of the house. The problem is they only used 2 prong outlets. They cut the ground wire short and wrapped it around the ...
4
votes
3answers
600 views

Could a disconnected ground wire in the breaker box have caused any problems?

A major home improvement company renovated the outside of our home. During the process the subcontractor jacked into our breaker box without permission and without the use of an electrician. After ...
4
votes
2answers
2k views

Why does my computer have a ground fault only when a peripheral is attached?

I have a weird problem regarding grounding: I have a computer, printer and a LCD screen connected to the electric outlet through a power strip. My computer is zapping me when I touch the body so I ...
4
votes
1answer
216 views

How would I ground an internal ethernet surge protector?

I have a Cat-6 cable running to an external PoE security camera that I'd like to have surge protected, but I'm unsure how to ground the protector. It has a prong coming off that I assume is the ground ...
3
votes
2answers
35k views

How should I connect the ground wire for my light fixture?

I am replacing a light fixture in my bathroom and have the following setup: The electrical box is plastic The wire coming from supply has black (hot), white (neutral) and copper (ground). The light ...
3
votes
1answer
665 views

How can I make a fake ground output?

I'm having problems with my electrical oven: I get shocked when I touch it. I think the way to solve this is to connect the ground wire it has (the green wire) to ground? The problem with that is ...
3
votes
4answers
2k views

GFCI not tripped, but no current downstream

I have an outside shed with a non-GFCI outlet and a light fixture. Only the light is controlled by a switch. The shed is wired off of an outside GCFI outlet. Everything, including the outlet, was ...
3
votes
1answer
134 views

Do I need to ground Ethernet cable run beneath a pier & beam house?

I'm fairly amateur when it comes to home networking, though I get the basic concepts. I bought a 1000' spool of this Cat6 Ethernet cable, simply because it was the only outdoor-rated cable sold by ...
3
votes
2answers
2k views

Is there a length limit on grounding conductor to ground rod?

My service panel is over a concrete patio, it was improperly grounded in the crawlspace. I cannot drive a proper ground rod in the crawlspace so I would like to drive one into the earth on the side ...
3
votes
1answer
333 views

What is this orange clip my ground wire is connected to?

I am trying to replace a dome light with a nice small ceiling fan. When disassembling the old light, I notice an odd orange/clear clip connecting the lights ground to the house. What is this called, ...
3
votes
2answers
229 views

Are directTV dishes energized in some way?

Are directTV dishes usually energized in some way? I was recently at my grandmothers house installing an over the air digital tv antenna. I decided to use the same coax cable that originally ran to ...
3
votes
2answers
674 views

Can I terminate a ground wire to the neutral bus if the ground bus is full?

I have a Crouse-Hinds main load center. The ground bus is at the top left of panel and the neutral bus is at the bottom right of the panel. I want to add a 15 amp circuit for two outlets in my ...
3
votes
1answer
657 views

DIY solution for open ground wiring where electronics need to be plugged in?

Although many of the original two-prong outlets in a rental property (built around 1958) have been replaced with three-prong ones almost none of them are actually grounded (the couple that are ...
3
votes
1answer
2k views

Is it okay to have an ungrounded light fixture?

I recently moved into an older home (built in 1968) and have been replacing some of the older light fixtures. We pulled down one of the lights and found that there is a ground running into the box but ...
3
votes
1answer
241 views

Where do I attach the fixture grounding wire when no supply grounding wire is provided?

I am replacing an undercounter light and I have a black, white and red supply wire but no green or bare copper supply wire. Where do I attach the green ground wire attached to the fixture?
3
votes
3answers
1k views

Can I attach the main ground from my service panel to the old steel water main in my house?

My current main ground is improperly connected to the water line in my house and I am planning on changing it this week. It is "connected" to (read: formerly soldered, now kind-of-sort-of laying on) a ...
2
votes
2answers
2k views

How do I know what size grounding conductor is required?

Is there an international standard that specifies the size of the grounding conductor to bond a metallic part of the installation to a grounding bar?. And to connect the grounding bar to the ...
2
votes
2answers
13k views

Where does the ground wire go in a 3-prong dryer cord configuration?

We moved to a new place where the dryer connection is 3-prong instead of 4-prong. The dryer was originally 4-prong, so we bought a 3-prong cord and installed it. It works fine, except I am not ...
2
votes
2answers
1k views

Can a grounding issue with newly installed light fixtures cause a short circuit/blown fuse?

I have installed three lights (60 Watt Bulbs) on the same line (wire) connected to one light switch. The fuse blew when I hit the switch. I’ve connected all of the white to white and black to ...
2
votes
4answers
125 views

Can armored bx cable come into contact with other metal objects?

I am running armored 12/2 bx to wire 4 high hats, the armored cable is grounded. There is a heating duct which I must go over, but the AC will come in contact with it... Is this ok or do I need to ...
2
votes
2answers
111 views

Does an extension cord from 2 to 3 prongs have any benefits?

If you're plugging a device with a 2-prong plug into an extension cord that has 3 prongs on the other end, does that give it the grounding benefit of the third prong?
2
votes
2answers
549 views

Is it possible to detect from the power outlet if there would be current that needs grounding?

In my house we have 2 outlet power sockets (no earth) and whenever I charge my laptop I would get electric shock from the laptop when I am touching ground like if I hold laptop on my lap and touch the ...
2
votes
2answers
2k views

Can I extend the ground/bus bar in a main service to accomodate subpanel equipment ground?

I am about to replace the main service breaker panel in my house. The old panel (a 200amp Siemens 40-circuit) had bus bars that extended the entire vertical length of the box. The new panel I would ...
2
votes
1answer
507 views

Potential wall socket fault

I'm remodeling a room and sorting up a rat's nest of questionable electrical practices... boxes hiding in the wall, wall fixtures being used to branch circuits, etc. At this point, all of the hard ...
2
votes
1answer
1k views

Why doesn't my motion sensor light work?

I want to install a simple motion sensor (Lutron Maestro MS-OPS2) on a single pole switch in my garage. When I installed it the light would not turn off. The instructions (PDF) that come with the ...