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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58 views

What would be a good way to run a ground from the existing grounded circuit to the new power outlet from another circuit?

So after asking around here I was told that it is OK to run a ground wire from an existing near by power outlet (on a different circuit) to a new power outlet. The layout is below. The garage circuit(...
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108 views

Can I retrofit ground to a two wire outlet from a nearby grounded outlet? [duplicate]

This is in my garage. I am trying to add a second circuit in order to be able to run the dust collector and the table saw at the same time. I did run them on the existing circuit with no load and the ...
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154 views

Grounding TV Antenna and Metal Porch, And Resolving Ground Rod Issues

I'm mounting a light-weight metal TV antenna to a metal mast attached to old-school metal roof columns (with the curly-cues) on a small second floor porch which has a metal porch roof, and metal floor ...
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63 views

Antenna Ground/Attic

I have mounted a Clearstream Antenna in my attic of a single story home, which is connected to my tv's via cable. Should I ground it and if so how? Can I run a Copper wire from the splitter to the ...
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1k views

Bridging Neutral and ground in a Light Switch

I changed my bathroom light switch for a Occupancy Sensor Switch but it would not turn off. Since the package said Ground Wire Required I figured it was a ground issue. The location has wiring from ...
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81 views

What tests can I perform to figure out if a wire is my Grounding Electrode Conductor?

As part of some investigation into the systems of the house I live in, I was looking at the grounding and bonding wiring for the house, as most of it is accessible from the basement utility room. In ...
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74 views

Shared ground for 3 circuits

My septic system requires 3 circuits. A 10Amp & 2 20Amps. Using schedule 40 conduit in a 80ft run underground to the 3 pole emergency service disconnect. Can these three circuits share a ground? ...
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71 views

Intersystem grounding bus ran out of terminals; now what?

My intersystem grounding terminal bus is out of available terminals, and I have two additional communication wires to ground to it. Does NEC allow supplementary bus bars? NEC 250.94 seems to imply no, ...
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53 views

Does a ground need to be install in a 2' x 4' outside junction box?

i have a bunch of outdoors 2' x 4' open bottom concrete junction boxes. the question is, does each box need to have a ground rod installed and bonded to the ground wire? if so can someone please point ...
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514 views

Trying to install Kasa smart switch but having trouble with ground wire

I started to install my KASA smart switch but when I opened the unit I wasn't able to find a ground wire. I currently have two black wires (one stabbed into the switch and the other is wrapped around ...
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312 views

Do I need to install a local ground point for a secondary consumer unit in my shed?

I've just installed outdoor sockets on the side of my brick shed, where previously we just had a double socket inside the shed itself. The original socket in the shed is on a spur from the ring main ...
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96 views

how to replace surface conduit for a two-wire lighting circuit?

I have an old house with unswitched knob-and-tube running to a ceiling fixture. Previous owners ran surface conduit to a wall switch and to a second light fixture over the sink; none of this was ...
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115 views

Is it OK to have a redundant path to earth?

I have a home with separate flat on the grounds. Our system, in South Africa, has 230V live and neutral, supplied by the national grid operator through a distribution board, via isolator. It then ...
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89 views

Can you run earth ground thru conduit into home?

I have a detached garage that I am running coax and cat6 to. Running pvc conduit underground from house to garage. My question is when the conduit comes up out of the ground and into a 1 gang pvc box ...
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131 views

New Circuit Faceless AFCI tripping with no load

Most AFCI questions here revolve around existing circuits, and AFCI Circuit breakers, but my situation is a little different. Here's the details: Renovation to add a half bath and laundry room in ...
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136 views

How to check grounding connection

Background: in my neighborhood the water company is renewing the pipe line, taking away the old metal pipes and replacing them with plastic pipes. The electrical network company has thus sent a letter ...
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124 views

Can I use a bonding terminal on ground wire between ufer rod and panel

Long story short, I need to replace an electrical panel. In my the new panel the grounding bar is in a different location than the current panel. The ground wire from the Ufer rod will not reach to ...
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337 views

Adding ground to replacement sub panel

We recently purchased a new home that has a 16 x 30 steel building in the back yard approximately 100ft from the main panel. The building has power run to it off a 60 amp breaker in the main panel. ...
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3k views

Use 3 prong microwave on 2 wire ungrounded outlet?

I have a dedicated, ungrounded 15A outlet. Can I use a microwave with a 3 prong plug on it if I install an AFCI/GFCI combo outlet? Or do I need to also ground the outlet? The microwave owners manual ...
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1k views

Grounding Light Switch

I've been changing out the light switches in my house. None of them have been grounded even though there is a ground wire present. What would be the proper way to ground the new switches to the ...
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1k views

Is there any way to do an Ufer (concrete-encased) ground with a monolithic slab that has a vapor barrier?

If I understand correctly, when using a monolithic slab (where the footers and slab are poured as one piece), the vapor barrier is installed under the slab and the footers. The NEC does not consider ...
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652 views

Can ground wire be downsized mid run?

I'm planning on running some schedule 80 PVC conduit in my garage to add extra outlets. At the same time I want to ground the 2 post rack I have in my garage. A few related questions that appear ...
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3k views

adding a ground wire to a 2-wire breaker panel

I am trying to run new ground wires from outlets in the house into my breaker panel that handles an old 2-wire system. There is only one panel after the meter that has the main cutoff, the various ...
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510 views

Grounding a dryer

I have 4 prong dryer outlet that the previous owner wired up with 10 ga 3 conductor wire. He wired it "correctly" with a red, what, and black conductors. The ground terminal isn't connected to ...
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3k views

How can I tell if an appliance is grounded?

We're doing some kitchen remodeling in our 100-year-old home and came across some very sketchy wiring hidden in the soffit. There is never any current running through the junction, and because there ...
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77 views

Replacing switches and outlets

We painted our first floor and the outlets are all brown so I wanted to replace them and the switches with white ones. In doing so I was taking a ground wire off the old outlet and it snapped off of ...
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62 views

I have more than 1 submeter off my main service do I need a (8ft 5/8"), grounding rod for each sub meter?

I have more than 1 submeter off my main service do I need a (8ft 5/8"), grounding rod for each sub meter? They feed outdoor receptacles. Thanks for any help.
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241 views

Can I bury a bare ground connecting rod?

We just ripped out an old rotting deck at our house, this exposed the wire that connects the electrical panel to the grounding rods. There is a PVC pipe encasing the wire from the panel to ground ...
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403 views

Replacing single pole light switch with dimmer

I'm trying to replace a single pole light switch with a Leviton 6674 dimmer. This dimmer has four wires including the ground wire and a wire which is tagged and used for three-way applications which I ...
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1k views

TV antenna installation: How to ground

I'm going to be installing a TV antenna with a mast. I want to make sure I ground everything properly. As far as I can tell, I need to ground the antenna via the coax and a grounding block, and then ...
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2k views

What should I do with the ground wire on a replacement bathroom fan motor?

I bought a new motor for my bathroom vent fan and it came with a ground wire. The old motor does not have a ground wire, or not that I can see. What should I do with the ground wire?
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45 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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962 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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3k 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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2k 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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2answers
1k 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, ...
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9k views

How should I ground a GFCI to a metal box?

I've replaced some old GFCI receptacles in my kitchen, which live in metal electrical boxes. The old GFCIs did not have grounding conductors attached, but it seems that the boxes themselves are ...
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288 views

Is this a ground wire in my ceiling light canopy?

I just installed a ceiling light fixture, which has a feature I've never seen before. The fixture has the traditional white, black, and green wires. I attached the white and black fixture wires to the ...
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3answers
54 views

Where do I attach the Ground and Neutral inside a sub-panel?

I'm wiring 100 amp subpanel to detached Garage with 2/2/2/4 copper. I'm hoping to replace the subpanel to my detached garage which was previously wired to run on a 40 or 60 amp subpanel with like 6 ...
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59 views

Light switch not working when grounded

I have a light switch connected to a split outlet (one always hot, other controlled by light switch) that appears not to work when the switch is grounded. To be clear, the switch no longer routes ...
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43 views

Ground/outlet tester shows bad ground for entire house after switching single outlet

I just changed out a receptacle. Prior to changing I tested the original receptacle with a ground & outlet tester. It showed everything to be wired correctly (green light). After installing the ...
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71 views

Existing outlet, metal junction boxes, new circuits, and ground

I have an existing 15a outlet in the wall of my garage (in-wall nm 14/2). I want that outlet to serve another area, so I've added junction box on top of the outlet and used EMT to run another ...
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92 views

Identifying cause of floating ground

I noticed that the ground prong of the only 5-15 receptacle in my laundry room appears to be floating. Findings: The ground wire behind the receptacle measures 0 ohm (i.e. continuous) with the ...
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47 views

Refrigerator restarts when a 3 pin plug is plugged to socket like Laptop Adaptor

Over last few months I'm noticing whenever I connect my Laptop cord and turn on the switch my Refrigerator in the kitchen is restarts as if power has gone and comeback. This happens primarily with 3 ...
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232 views

What should I do with the ground wire from my light fixture when there's no ground in the box?

The ceiling light/fan I want to install has a short GREEN wire. It looks ready to be twisted onto another wire. There is NO ground (bare copper or another green wire) coming out of the ceiling box. ...
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112 views

Campground sub panel grounding question

I’m involved in maintaining a small campground. Some areas are served by overhead electric and an underground services. No ground wire was ever ran or pulled from the main breaker panels. Individual ...
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55 views

Adding ground…“bare armored ground”: suggestions

I have a 1940's house. Modern panel and sub panel feeding cloth clad cable and knob and tube. Very hard to access crawl space or inside wall because wood ship lap over skip sheathing, shingles over ...
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87 views

Attaching a ground wire to a prong that plugs into an outlet adapter

The outlet shown in the image below doesn't have a ground wire connecting to its receptacle. A friend of mine is helping me setup a ups that requires ground wire, however what he did was run a ground ...
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54 views

Voltage on ground wire of LED light, changes when dimmed?

Why would there be a voltage on the ground wire of an LED light, that varies according to how the dimmer is set? When at full brightness, the ground wire reads ~30VAC, when it is mostly dimmed, it ...
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142 views

Grounding metal electrical boxes

I would like confirmation on the following: Is any metal box automatically grounded if it is supplied by an armored cable (without a ground wire) that is properly connected to the box and back to the ...

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