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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5k views

How do I/can I install a dimmer without a ground?

Full disclosure: I know very little about electrical work and was hoping for an easy fix. I have been getting a buzzing from my dimmer every time the dim feature is used, and I read that a low ...
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1answer
73 views

House and shop on separate meters, will water line between the 2 be a problem?

Since my utility pole is halfway between my house and pole building (shop), there is a meter at each service entry. My (house and shop) panels are grounded properly with ground rods and subpanels are ...
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1answer
1k views

Generator RCD trips after startup

We currently have a renewable power system (solar, hydro and wind sources charging a 48v DC battery bank) connected to an inverter, which in turn supplies 230V power to a house. Due to the lack of ...
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3answers
960 views

Should I install GFCI outlets or run new grounded cabling in my older home?

I am renovating an old home(90 years) that my wife and I just purchased. The electrical system in the house is outdated - some of the outlets appear to be knob and tube but most are the brass and ...
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1answer
328 views

Is it safe to ground electrical appliance?

I have a large lamp with a metal frame which is not grounded(which I thought is a legal requirement for metal framed appliances in my country, but perhaps not). Is there any risk if I swap out the 2 ...
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2answers
780 views

Apartment with no grounding/earthing… do I really need it?

Just a quick question. I don't know much about electricity, so here it goes. I got an apartment where there is no grounding. In fact, there is no grounding for the whole building. I have 110v and 220v ...
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2answers
4k views

Can I put 15 amp switches on 12 gauge wire

We're finishing our basement and doing the electrical ourselves. We have a bathroom that we ran 20 amps to, 12 gauge wire, but we only have a few lights in there. The lights definitely won't be using ...
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2answers
1k 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 ...
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96 views

A shorted to ground compressor can't be a pre-existing condition can it?

Our home warranty company is trying to deny our a/c claim because the technician they sent said, our compressor was 'shorted to ground.' They say that this was a pre-existing condition and that ...
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1answer
224 views

Can I connect the ground wire for my dryer to a different hole in the chassis?

I am installing a new GE electric dryer (model GTD42EASJ2WW) and attempting to connect the 4-wire cord. The last step is to connect the green ground wire with a supplied ground screw. The hole that ...
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1answer
89 views

Grounding a subpanel using existing wiring

I had a 60 amp breaker that was connected to an oven in the kitchen. Since this is no longer needed, I'm trying to re-purpose this #6 wire to connect to a new Electric water heater I'm putting in the ...
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2answers
148 views

Grounding a switch that has no ground screw or wire

I have a timer switch (see photo 1) that has No Grounding Screw and ** No Grounding Wire** protruding from it. It is to be installed into a plastic gang box and replace a switch which is currently ...
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1answer
135 views

Grounding to the box and 3 Prong Receptacles

Recently bought a flip house. The flippers replaced every two prong receptacle with a three prong and a bootleg ground. In the process of undoing that unsafe practice, I've discovered that almost all ...
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2answers
363 views

Off Grid PV System Grounding Question

Hi I am installing an off grid solar system form my orchard and shed. Basically there are some pumps, lightning and some household appliances like refrigerator etc. I have read many articles about ...
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1answer
117 views

Safest way of temporarily working with a failed 4-wire outbuilding subpanel (one missing hot leg, neutral bonded ground on both ends)?

This is actually a multi-pronged question. I will ask it all and split out what I can as needed. I am renting a remote out building in a rather rustic location on a farm. The power situation here was ...
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1answer
84 views

How to track down a ground failure

Several times, I felt some tingling when using my 30 year old grounded sawzall. Brand is Milwaukee. I thought that was odd since it has a grounded cord, plus I was wearing hiking shoes with thick ...
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1answer
342 views

Does the NEC permit brazing for connections to ground electrodes?

I need to connect several copper-clad ground rods together with AWG 6 solid copper wire for lightning protection, and as part of the electrical service grounding. I also need to connect some 2.5" ...
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1answer
446 views

How to ground a junction box extension when using a non-metallic box?

I have a water heater that gets electricity from a dryer cord plugged into an outlet on the wall. I need to remove the outlet and replace it with permanent wiring and some form of quick disconnect. ...
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1answer
52 views

Grounding a 2 gang metal box in a wet area

In my pool area, I have a metal box that has 2 switches (spa air and pool light). Each switch has a green screw and the box itself has 2 green screws. There is also ground coming into the box. How are ...
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2answers
2k views

Should outdoor deck gazebos or grills be grounded?

We recently put up a put up a gazebo on the deck of our condo unit to provide some much needed shade. The gazebo is 10'x12' and the deck is 12'x16'. The frame is light gauge hollow steel thats powder-...
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1answer
83 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
383 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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120 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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2answers
4k views

Suitability of flexible metallic conduit serving as ground

EDIT: The attached photo is the most easily accessible example of the conduit used in the entire house. This shows the conduit attached to the garbage disposal with the previously mentioned 3/4 set ...
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1answer
450 views

How do I properly ground a light fixture?

I installed a light fixture in my bathroom and need help grounding it properly. The previous fixture wasn't grounded. When I removed the fixture, there were two wires, one black and one white, from ...
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5answers
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How to solve a miswiring of neutral and ground

An Outlet in the dining room which had a microwave plugged into it stopped working. I found 120+ volts from hot to ground and 96+ from hot to neutral. Also at one point my "three light tester" showed ...
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1answer
1k views

What do I do with the ground wire?

I just bought a wall timer to replace a three-way switch. The wall timer comes with three wires, one for the common screw wire, and the other two are for the travelers, with no place for a ground wire....
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2answers
14k 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 ...
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1answer
1k 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 ...
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1answer
115 views

Connect two grounding rods

I added an exterior TV antenna and a grounding rod next to it with a 6 gauge copper wire going to both the antenna mast and the ground on the coax coming from the antenna. It is about 15 feet from ...
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0answers
77 views

Bathtub pump motor - ineffective ground through water pipe?

I opened up the space underneath my bathtub for the first time in this house. The tub is a "spa" style and has a pump motor to circulate water through jets. (I'm in NY / USA). I noticed that the ...
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0answers
153 views

Wanting to make existing 2-wire 220V outlet a 4-wire one

(Located in the USA) I've inherited a 220V (or 240V?) circuit which is just capped off inside a junction box. It's hooked up to a 30A breaker, and seems fine, except that it's only a 3-wire run--no ...
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200 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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3answers
2k views

Can I ground my workbench using an unused outlet's neutral?

I haven't found any advice on my specific predicament, so I'll ask here. First, some background. I just moved into a house with old electrical wiring (read: ungrounded outlets). Unfortunately, the ...
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3answers
691 views

How to mark an outlet as ungrounded

I'll be replacing my ungrounded three-prong outlets with tamper-proof GFCI outlets in my home in the USA. Maybe I'm overthinking this, but is there a way to 'universally' mark the outlets as ...
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1answer
228 views

Why can't I put a load between hot and the ground line? [duplicate]

Normally the load goes between hot and neutral line. Since neutral is grounded why can't I put a load between hot and the ground line?
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2answers
179 views

How should a sub panel be grounded if next to the main breaker?

How should a sub-panel be grounded if next to the main breaker? Do the ground and neutral need to be isolated (separated) from each other in the sub? Sub-panel will be about 6 - 8 feet away from the ...
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4answers
2k views

What are the risks of sending low-current neutral through the ground wire?

I have an existing switch that controls an outlet. I'd like to replace it with a smart-home switch, which requires a neutral wire to power the switch itself. However, there is no neutral wire at the ...
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3answers
160 views

Are these my ground wires?

So I'm replacing a ceiling fixture and my new fixture has a ground wire but the old one didn't. My outlet box has two places where wires come in - one with a black, white, and bare and the other with ...
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1answer
1k views

Why does my Dewalt power drill only have a 2 prong plug? [duplicate]

Why does my Dewalt power drill only have a 2 pin plug rather than a 3 pin with a ground?
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2answers
248 views

Practical advice needed on house with no earth/ground

I've just bought a 4th floor apartment in an old (1820) building in Spain. Neither my apartment, nor the building as a whole, has any earth circuit. I'm looking for practical, technical advice on ...
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2answers
3k 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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2answers
193 views

Would my grounding conductor be “choked” out by metallic conduit?

I’m in Hawaii. The G.C./engineers have told previous electricians that they want the bare ground coming up through slabs to building steel to be in a short piece of rigid conduit for protection of the ...
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1answer
8k views

Is earthing required for a submersible water pump?

I have a submersible water pump with a power cable that ends with a three-pronged plug with a protective neutral contact. Having a matching outlet is problematic - there are only unearthed outlets at ...
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2answers
168 views

One hand in the sink and one hand on the stove, I feel a tingle. How dangerous and how to fix? (Not my home)

I was staying with a friend recently and after cooking dinner I was washing up. I had water running in the sink, and one hand in the water rinsing a glass. With my other hand I reached to grab a ...
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1answer
648 views

why are 120v coming out of my light switch plate screws?

While troubleshooting a dead GFCI receptacle in my bathroom I discovered that a nearby light switch plate's screws have 120 volts coming out of them. The GFCI was reading 1.5v from hot to ground on ...
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2answers
95 views

Can I use the ground wire as a neutral for an outlet?

I had a bulb light outlet, and I decided to convert it to power outlet. Now when I took the bulb light off, I discovered that there is only two wires in the wall, brown and yellow green, so I assume ...
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1answer
67 views

What should I do about no ground wire

I bought a new bath fan for my old house(1920s). Where the fan is installed, there is a power/black, and a neutral, but no ground wire to connect to it. It's old knob and tube wiring. Is no ground ...
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2answers
216 views

Does a non grounded GFCI meet code?

Background So I live in Michigan (which of course affects code) and I have a bunch of two prong outlets in a house that I own. If I want to convert these to be 3 prong outlets is it still up to code ...
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How do you add a separate ground back to panel on 2 wire ungrounded outlet?

This post mentions that it is now legal to add a separate wire to ground an outlet. What is the proper way to do this? Does the wire need to follow the same path as the ungrounded 2 wire path? How ...

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