Questions tagged [grounding]

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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1answer
68 views

How to properly ground when welding

I read several articles online about grounding when welding and I'm more confused than when I started. I have an AC welder (old Lincoln buzz box)...just in case the type matters (AC vs DC). Here are ...
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2answers
76 views

12/3 underground to garage multiple 14/2 wires to bare 12/3. No ground rod anywhere around 14 x54 detached garage

I've been in this house, built in 1941, for two years now. I've been working on replacing very old wiring in the basement for some uncomfortable issues I've found. But these issues pale in comparison ...
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9answers
5k views

I live in an older home without ground wiring. Is it safe to install 3-prong GFCI with only a hot and neutral?

I live in an older home that doesn't have any ground wiring. Is it safe to just install 3-prong GFCI outlets and use devices and appliances that expect a ground wire connection when I just have the ...
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1answer
59 views

Wanting to add a ground wire for a sub panel replacement. Would like to use use nearby EMT

Updating electric in an attached shop. There are two sub panels, both fed 240 from the main panel in the house. The one has large aluminum conduit, with the conduit serving as ground. The smaller ...
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1answer
32 views

Can a 20' section of #4 rebar server as concrete-encased electrode ( UFER ) if it is not attached to the rest of the rebar matrix in an on-grade slab

Let's say we have 9'x25' monolithic concrete slab of 5" thickness with a 12" deep by 12" wide "haunch" footer around the perimeter. At 2-1/2" inches below the surface of ...
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2answers
67 views

Ceiling light fixture has no ground wire, and wires are of same color [closed]

I got a ceiling fixture which has no ground wire and has the same color wires for live and neutral. It didn't have a proper mounting bracket, so I got one from a store it has a ground screw in it. Is ...
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2answers
125 views

Voltage between shower faucet and drain

Is it normal to have voltage between shower faucet and drain? I measured 2 volts between shower faucet and drain when water heater is off, and 11-12 volts when it is on?
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3answers
133 views

What can I do about these exposed grounding rods?

There are two grounding rods outside my house that stick out above the ground. Besides being a pain to mow around, the longer (bent) one is quite easy to trip over. Is there anything I can do to get ...
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3answers
439 views

Ground wire pass-through safety switch to sub panel?

I have an out-building 150+ feet from the main service panel with its own 240v 60 amp sub panel. It is powered via a four wire bundle going through underground conduit -- 2 x 120v feeders, 1 neutral, ...
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1answer
49 views

Telco ground: meter panel vs service panel

My meter panel connects to an exterior service panel on the back of my house via a short stretch of NM conduit. The service panel has my main breaker and ties neutral to a grounding wire bonded to a ...
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1answer
63 views

How should I connect ground wires for new ceiling fan?

I am replacing a ceiling fan in a house we just bought. The current box for the fan has 3 sets of wires coming into it, one for the switch and 2 for the outlets. However, the ground wires are were ...
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1answer
60 views

AFCI receptacles vs GFCI receptacles for non-grounded outlets

I'm replacing a few 2-prong receptacles in an old house, and all these outlets do not have ground wires. Cost for rewiring is too much and I'm thinking about using GFCI / AFCI receptacles instead. My ...
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1answer
69 views

What is the appropriate fitting to connect an armored cable to this stand-alone receptacle product?

I have a pre-existing #6-3 armored cable (without a separate ground conductor), as shown here: I am replacing the range this was connected to, and would like to provide a 4-wire connection via a 14-...
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1answer
42 views

Retrofit ground wire from water main ground

I am replacing an old oven. It is currently wired with 3 wire (AL SE cable) and has no dedicated ground run. I would like to install a proper 4 wire outlet for the new range. Am I allowed to use the ...
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2answers
98 views

Can I use the metal cladding of a cable as ground for this range installation?

I have a pre-existing #6-3 cable (without ground) with metal cladding on a 50-A two-pole circuit that was wired into a range. As shown in the photo, this cable has only black, red, and white ...
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2answers
92 views

Neutral and ground seperation at a sub-panel

Could someone explain to me why the neutral and ground bars are never bonded on a sub panel? It's my understanding that the reason they're separated is so that the current returning on the neutral ...
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3answers
77 views

Grounding in 250v & 125v

My comment is more of a question regarding the mechanics of a problem I have. It is not theory or math. I have that down pretty good. Here is the problem: let's start at the power source. We have the ...
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1answer
47 views

GEC and NM cable through same hole?

I'm replacing old 240v wiring in our home and the grounding electrode conductor was put through the same hole in the stud as the 240v cable was. I am not wanting to drill any more holes in the studs ...
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0answers
40 views

Can I connect Ground from UPS outlet to another outlet which has no Ground?

Simplified situation: I live in a rented room. My room has two two outlets, namely Outlet A and Outlet B. Outlet A has connections only from main supply. It has no connection to UPS. And, it has two ...
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3answers
58 views

Grounded properly?

Hello all, I am adding a 240V outlet and am grounding the box. I would like to know if what I have done here will be okay upon inspection. Thank you, Ben
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3answers
84 views

Can I run a ground wire from a cheater plug to another 3-prong outlet to ground it?

I live in an old house with my parents (who are the homeowners), and have a problem where some of the electrical outlets in the oldest parts of the house have not been upgraded from two-prong to three-...
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44 views

earth ground for a pool at a divorced location

i am putting a service to a deck area for a new pool and pump, there is an earth ground copper covered rod buried 10 feet which is 25 feet from the underground pipe i am splicing into for the pool ...
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2answers
92 views

No ground bus in panel

Correct me if I’m wrong but there is no bus panel here. Working on a bath remodel and running new wires to two new breakers for new GFCI receptacle and one for heated floor. As this is main panel ...
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1answer
67 views

Grounding Rod Requirements

I live in Mason County, in Washington State. I am installing a 100amp RV pedestal (ground mounted). I am running 4/0,4/0,20 triplex direct bury cable (not sure if going in conduit or not yet)about ...
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2answers
112 views

Proper way to ground a 240v metal outlet box?

I am replacing the circuit to our stove and am doing the rough in currently. We may one day want a stove requiring more amperage than our current 40 amps and so I am replacing with 6-3 w/ground. I ...
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2answers
80 views

How can I easily verify that appliance housings are grounded properly?

I'm looking for an easy way to verify that the metal casing of appliances are grounded, such as a range, without needing to disconnect and pull them out. If I use a multimeter set to continuity and ...
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2answers
69 views

How do you properly use metal conduit as a ground?

I have read here that metal conduit can be used as the ground and you needn't then pull a separate ground wire: What are the NEC rules governing this? How do you avoid "weak ground" links ...
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1answer
52 views

Direct Burial Wire for 200 Amp Sub Panel from 200 Amp Main

I'm trying to get the right info to price out my project. I plan to install a 200 amp sub-panel in a shed with a 125 to 150 amp feeder breaker. The shed is about 180 feet away from the main panel. The ...
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1answer
39 views

What to do with ground wire in a double gang dimmer switch

I am replacing 1 of the 2 dimmer switches in a double gang box. I'm replacing the right switch in the picture. The new dimmer switch (Lutron smart switch) has 3 wires, which includes the ground wire. ...
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1answer
59 views

Handling electrical inside a galvanized pipe gazebo

I am constructing a gazebo on my flat roof deck out of 2" galvanized metal pipes and joints. I would like to attach a light fixture on one of the upper pipes. Can I pull electrical through the ...
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2answers
79 views

External light was not earthed properly

I have a 50W external light, installed on an outside wall, high on the wall. When touching it, I received an electrical shock. I cut the electricity, and opened up the electrical junction. I saw there ...
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3answers
114 views

In an old house, do I need a ground wire to install newer outlets, lights, and appliances? [duplicate]

If I have an old house, as in 80 years old (the wiring is newer than that), and it only has two wires, hot and neutral, no ground, can I connect newer things like ceiling fans or hanging lights? The ...
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1answer
45 views

Neutral-Ground bonding with generator (no utility power)

I've been doing plenty of searching around the internet, but cannot find anything for my specific scenario. Any help or advice would be greatly appreciated. I would like to install a breaker panel at ...
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1answer
47 views

Can I connect the supply ground wire to a fixture's ground wire with a wire nut

Supply has black, white and ground wires. Light fixture has black and white wires and a green screw for ground. Green screw connects to fixture itself. I cannot get the supply ground around the ...
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0answers
21 views

Multiple bulb pendant lamp, grounding wire for metal fixture

Hypothetically speaking, if a person is adding a ground wire to a 3 prong plug in pendant fixture with multiple bulbs in parallel and the body of the pendant is metal, does there need to be a ground ...
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1answer
37 views

Two ground wires from fixture in instructions but only one unattached

I am currently installing an Artika 4-Pendant light fixture - Milton 4 but am running into issues while wiring it. In the instructions it indicates that "Connect the ground wire (G) to the two ...
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1answer
65 views

Can I safely deal with an open ground receptacle by replacing it with a GFCI?

I have found three receptacles in my home for which a three-light receptacle tester indicates open ground. Can I safely resolve this issue by replacing these receptacles with GFCI receptacles? Would ...
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1answer
38 views

Can I run an antenna ground conductor along the dirt?

I have a chimney mounted antenna and mast that I need to ground. It is about 20-30ft horizontally to the existing electrical service entrance ground rod, so I was planning on running a conductor down ...
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2answers
471 views

Why are ground wires sometimes not insulated?

I recently replaced a single AC dimmer light switch that was one of two light switches in a larger box. The ground wire leading to the switch was raw copper without any insulation. After replacing ...
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2answers
130 views

Ground and neutral bus considerations when wiring a gfci breaker

Hello all, I am adding a gfci breaker to my main breaker panel. By the looks of my panel I think the ground bus and neutral bus are bonded but not certain of this. It looks like my right bus bar is ...
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0answers
31 views

Grounding new panel

My meter is two hots and a ground. Installing new breaker panel and new service wire from meter to panel. Current panel has neutral and ground connected. With the new 3 wire with neutral and ground ...
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0answers
55 views

Why is my receptacle tester not showing a complete lack of ground?

I've been using a receptacle tester which shows me that my outlets are perfect as far as it can tell. Yet I know for a fact that ground is completely missing from many of the receptacles I've tested. ...
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1answer
33 views

Looking to ground roof mounted mast - No ground rod at service entrance

So I'm looking to install an anemometer on my roof. With my last house, in Ohio built in 2000, when I added a TV antenna there was a grounding rod near the electric meter. However, my current house, ...
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1answer
53 views

How to ground a kitchen exhaust blower fan?

Recently our kitchen exhaust fan stopped working, only humming and not moving. In the kitchen there's a butterfly damper, the exhaust switch is on the vent hood, and the motor and exhaust fan are on ...
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1answer
47 views

Connecting to system ground for equipment ground

Some previous owner of my house installed new lighting and receptacles in the attached garage, and these are all wired with 14/2 NM cable with ground on a 15A circuit that is otherwise ungrounded ...
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1answer
64 views

Replacing #6 Ground Wire

Do I need to replace #6 solid copper ground wire from Service panel to water pipes with #4 solid copper wire in 1997 construction as recommended by inspector?
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1answer
1k views

Broken ground wire in receptacle box

I’m pretty new to home DIY and had to replace a few outlets this weekend. On the last one the ground wire snapped as soon as I unscrewed the old outlet. It looks like the wire was clamped to the other ...
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2answers
220 views

Is the advice “don't operate light switches barefoot” outdated?

I was taught in my young age (1980s-1990s) not to operate light switches (or anything electrical) barefoot. Is this advice still relevant in 2021 (in a modern house in Western Europe with grounding, ...
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1answer
40 views

On a side by side house that has two meters and two separate main panels. How many ground rods are required

How many ground rods are required for a side by side house that has two meters and two separate main panels.
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2answers
63 views

Do I need a ground rod in addition to a pipe? Subpanel in separate structure

The scenario: detached garage with a subpanel supplied by a 30a 240v feeder from the house, with two hots, neutral, and EGC. There is also an Ethernet cable from the house to the garage, carrying a ...

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