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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When are copper pipes a ground?

There is an exposed copper wire attached to the cold-water pipe near the dryer plug in my house. It's not attached to anything and I'm wondering when it would be useful if at all? This wire just ...
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154 views

Is having cloth touching a grounding wire ok?

In my basement, the ceiling of one of the closets is the copper grounding wire that runs from the breaker box to my water main. This wraps around the perimeter of the basement on the top of the rooms ...
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64 views

Using groun wire as nuetral wire with 240v circuit

I used the grounding wire within a10/2 UF wire as the neutral wire from a 120/240v 30a outlet to a nuetral/ground bar in the circuit box. The wires are protected from corrosion since the wire is ...
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4answers
640 views

How do you ground residential network equipment?

I needed to run some Cat5e UTP network cables and decided to add network outlets to most rooms, run new phone wiring and RG6 as well. Much of what I've seen and read about residential and small ...
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2answers
75 views

Electric Guitar at an outdoor show - Grounding issues?

I play electric guitar and today I had an experience where the guitar would give very slight tingling sensations - I wouldn't quite call any of them a bad shock because none of them really hurt badly, ...
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73 views

Replacing Old Ceiling Fan With New One and No Visible Ground Wire From Junction Box

I am replacing the ceiling fan in my bedroom. Coming out of the junction box are two sets of wires. Each set has one wire coming out of opposite ends of the junction box. I connected the blue and ...
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1answer
464 views

How can I safely connect a subpanel in a detached garage to the main with a 3-wire connection?

This weekend I attempted to install a breaker box into a pre-wired garage. The previous owners took the breaker box with them when they moved, and since I have installed quite a few subpanels, it ...
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57 views

How can I best salvage my 240V GFCI spa disconnect wiring?

Based on the answer to my recent question "How to wire a 240V disconnect panel for spa that does not require neutral", I need to run another wire from my main service panel to my spa disconnect panel ...
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31 views

Should I connect the ground in the outlet for the dryer and the panel?

the ground wire for the dryer is not connected at the panel, or at the outlet. Is this correct or do, or do I need to land the ground wire at the panel and land ground wire to the actual dryer plug ...
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25 views

Grounding switches

If a metal receptacle has 2+ switches but they are all on the same circuit, is it necessary to ground the receptacle to each one (or ground each one to the receptacle) or is it enough to just ground ...
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818 views

Does a neutral-to-ground voltage of 0.0 indicate a bootleg ground?

As described here (for example), in a correctly-wired receptacle, there will be a small potential difference between the neutral and ground wires that increases slightly with increasing load. I'm ...
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978 views

Is an explicit ground wire required through steel conduit?

We just bought a Chicago-area house and found that there's no ground wire in some of the recently re-wired areas. I thought that the national electrical code requires a ground wire for new ...
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83 views

Adding a ground to a GFCI ungrounded outlet box

I have bought a 1974 built Condo that had GFCI issues. A bathroom has a GFCI outlet and no ground wire attached. It has a red/white wire hook-up that functions properly. There is a metal box, ...
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1answer
55 views

Are receptacles protected when downstream from ungrounded GFCI?

I have an ungrounded circuit in my house with three-wire grounded receptacles. If I install a GFCI, will the downstream receptacles be protected even if the GFCI is ungrounded?
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114 views

Why are ungrounded GFCIs required to be labeled?

I discovered in my new house that someone had incorrectly connected grounded outlets (without any ground connected) to the knob and tube wiring. I have read that the outlets can be made safe by ...
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2answers
166 views

What if I can not connect the ground wire of my new light fixture to an old electrical connection?

I am replacing a bathroom medicine cabinet that has a light fixture attached. The old light fixture only had white and black wires. The new light fixture has white, black, and a copper wire. This is a ...
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1answer
109 views

Adding ground to an existing conduit

Continuing my basement shop brainstorming... As I said in another question, the good news is that I've got a 30-amp 240V circuit more or less in the right place and available, and easily accessible ...
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1answer
98 views

Question about this DIY light fixture and grounding

http://www.mysimplysimple.com/lighting-diy-office/ I was looking into the above light fixture project, and I noticed that it has no ground wire. Most of the videos I have looked into about replacing ...
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222 views

Potential Home Grounding Issue - Illinois

I recently bought a new manufactured home. There are instances where people have touched the front door and received an electric shock. Using a non-contact voltage detector, I confirmed that there ...
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46 views

Rewiring Garage, building grounds

I'm rewiring my garage from in my opinion is an odd setup. In my house panel (200A split phase) there is a 20A breaker there is a junction somewhere ( I haven't traced it out yet which branches this ...
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1answer
3k views

Do I need to ground black gas pipe?

The backstory: My HVAC friend, my dad and myself installed new gas pipes in my house after the 40 y/o pipe started leaking. Suffice to say, the old pipe was beyond repair, every retightening of the ...
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65 views

Are metal face plates safe for metal gang boxes?

So if I understand household wiring correctly: The ground prong is meant to safely conduct stray current (shorts, etc) to the ground. All outlets and switches need to be grounded to the gang box. A ...
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1answer
54 views

Why would the documentation say to wire a pole of the 3-way occupancy switch to ground?

I'm currently wiring up an occupancy sensor to a 3-way switch, I'm leaving one of the mechanical switches in place, and here is the wiring instructions. according to the instructions I need to wire ...
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2answers
195 views

Is water pipe grounding achieved thru pipe or thru water?

I've got a 1901 house, with copper (new) piping. Some of the electrical (old knob and tube circuits) are grounded to the water pipes. The copper pipe goes out to my shutoff valve located outside. so ...
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66 views

Where should I bond neutral to ground? [duplicate]

I have an old house that was remodeled with a bathroom addition added years ago. I have two breaker panels: the outside service entrance panel (A) and another panel in the garage (B). I found bonds ...
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1answer
51 views

Can I temporarily ground an outlet in my home to use a pressure washer outside it?

Can I temporarily ground an outlet by attaching a wire to its central screw and then to a grounding rod situated outside my house? I want to use an electrical pressure washer, but it requires a ...
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2answers
128 views

What could be causing an earthing fault in a specific socket?

When I connect a device to one specific plug socket, I get a current in the device body. When I connect the device to any other plug in my house, then the device is normal, i.e no current in the ...
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112 views

Light sconces tripping circuit breaker

I recently installed two sconces in our kitchen to replace some old halogen lights with LED bulbs. The boxes had three (?!) White wires twisted together, two black wires twisted, and one red. I ...
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1answer
25 views

Stacked dryer washer grounding

I got a 10/3 wire for my Dryer/Washer stacked. There is a Ground attached to the Dryer/Washer. Can I attache the ground wire from my 10/3 directly to the ground on my Dryer/Washer?
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85 views

Can I connect the grounding conductor to the neutral when installing a remote for a ceiling fan in an ungrounded box?

I would like to install an in-wall remote control for a ceiling fan. The remote is wired up with two black wires (in and out) and a ground wire. It controls the fan's functions via wireless signal. ...
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1answer
107 views

surge protection — grounding in a slummy apartment without ground access

I live in an apartment, where NONE of the outlets are actually grounded although they're all 3 prong... my landlord is a slumlord, fundamentally. He has fixed absolutely nothing electrical (lighting ...
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2answers
171 views

How to track down a short circuit in attic with pressed metal ceiling?

When switching on a light the circuit breaker tripped. On the distribution board, I switched off the sub-circuit for the light. The rest of the house and the plugs in the room with the light still ...
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873 views

Grounding requirements for main panel and subpanel

I recently had my main service professionally upgraded to 200A and had a 60A subpanel installed in my master suite to support future additions. All work passed city inspection, for whatever that's ...
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181 views

Where does the C wire connect in a dual transformer system?

When wiring a common ground (C wire) for a dual transformer system, does it matter which transformer you connect the ground too? I'd assume that the ground on either transformer would serve as a ...
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1answer
332 views

How do I make ground connections at my receptacle boxes?

I searched for my question but could not find the answers. I had the inspector out for my rough in on electrical inspection. He said I did a very nice job but I need to make all my grounds at all my ...
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1answer
164 views

Is there a safe alternative to electrical grounding for computers in Argentina?

I came across this APC product page for Microsol Isolator Modules, which purportedly provide "safe power in places with poor or nonexistent grounding." The unit is meant for Brazil, so it won't work ...
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181 views

Replacing receptacle, ground and neutral are connected

My house was built in 1974. I have doubts the wiring has changed since then (aluminum everywhere) and have already noticed some bad things (downstairs potlights on same breaker as upstairs living room!...
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94 views

How to prove there is presence of electricity leakage?

Recently just moved to a new place that is above higher ground. I found that my joint crack more often and tingling feeling like there is energy running all over my body. It feels like there are ...
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1answer
87 views

Can a grounding rod be connected to service neutral only?

My grounding rod is connected to the service neutral at the weatherhead where it enters the house. Should it not be connected to the ground bar in the 200A breaker panel?
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12k views

Is it dangerous if the ground pin of a 3 prong plug breaks off in the outlet?

The grounding prong of a 3 prong plug broke off in an outlet. Could this be an electrical hazard should a child touch it?
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3k views

Is it legal to wire a bath fan using load from top of GFI outlet?

Purchased a place and we are re-wiring the bathroom and putting in a standing shower. The bathroom is quite small so there is just enough room for this. There is a dedicated circuit, a round box above ...
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1answer
670 views

Must I ground my dishwasher to a metal plate?

I bought a Bosch 800 Series Dishwasher Model SHP68T55UC to install into my year 2000 house. Whenever I read tutorials online for installing dishwashers, I see that the ground wire goes to a metal ...
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2answers
415 views

Is it safe to ground/earth an extension cord with the radiator?

I just moved into a dutch student house without any grounded plugs which is quite usual around here. I get the 'Macbook Tingle' after some time, which solved by nudging the Macbook to the Radiator. ...
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1answer
100 views

Will I get electrocuted if I contact a live wire on an earthed appliance?

I have an appliance that has the wires connected well and it has been grounded (earthed). If I accidentally get into contact with a live wire will I get electrocuted considering it has already been ...
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20k views

How to fix an “open ground” on a receptacle that seems grounded?

In the master bedroom on one wall there are two receptacle that when tested shows “open ground”, I have replaced the receptacle on both (with new tamperproof receptacles) and while doing that checked ...
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79 views

Grounding subpanel to box - 'tap threads'

I've installed a subpanel and need to ground the grounding bar to the actual panel box. I was instructed to run a #6 jumper to a hole on the box, attach with a screw, making sure to 'tap threads'. ...
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414 views

Can I use conduit to ground an antenna?

I have an HD antenna mounted to a storage shed, not even as high as the house roof. It's close to where the electrical service enters the house. There's no ground rod in sight. (House built in 1971.) ...
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262 views

What reasons are there to rewire an ungrounded circuit instead of adding GFCI protection?

The NEC allows replacing non-grounding-type (2-prong) receptacles with grounding-type (3-prong) receptacles by adding GFCI protection at the breaker or first outlet. What reasons might there be for ...
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793 views

What options are there to achieve both grounding/ground-fault and arc-fault protection on old 2-wire circuits?

The three receptacle circuits in my house are 2-wire NM, but have 3-prong receptacles. My electrician recommended and installed GFCI breakers to provide "grounding" to these circuits. I now realize ...
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235 views

Can having a bad grounding situation destroy a circuit breaker?

We moved into a home, built a while ago. there are wires hanging and covered in black tape on a chimney. I bought 2 sconces and put them in place. i did not hook up the ground wire on one of them, ...