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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105 views

How to stop current originating from common ground wire?

A building has all the apartments' electric panels connected to a common ground wire. Theoretical situation: 1. one of the building's electric panels has its differential circuit breaker broken 2. it ...
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59 views

How do i ground a new overhead light fixture? I'm replacing a 2 wire fixture with a new 3 wire fixture wich includes a ground wire

How do I ground a new overhead light fixture? I'm replacing a 2 wire fixture with no grounding wire with a new 3 wire fixture which includes a ground wire.
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1answer
161 views

Oven has 2-prong plug plus earth wire. Socket is modern 3-prong. How to connect?

My 110V toaster oven has a 2-prong cable. Also, the oven's chassis has a screw with a connected green/yellow earth wire, which I want to ground. My wall socket is a modern 3-prong with earth and all. ...
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1answer
71 views

Do lights in a circuit have to be grounded for the whole circuit to be grounded?

I have a circuit in my old house (built 1918), it’s gone through many remodels during its lifespan and multiple owners. This one circuit has no grounded outlets, so I had a look behind the outlet to ...
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65 views

Electric Shock in Walls and Electrical Equipment

I'm getting a shock when I touch walls, electrical equipment like a water cooler, fridge, etc in my home. I have followed this procedure as I only have a DMM with me. The readings I got after ...
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69 views

How can I test which mains wire belongs to neutral and which to ground?

I currently live in Spain, in an old building, where apparently electrical codes don't strictly apply... because not all outlets have ground or, indeed, not all connections are grounded. To make ...
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38 views

I have a ground rod but I have no grounds in the house

My panel is connected to the main water intake jumping the meter and I just installed an 8 foot copper ground rod. Even connecting a new breaker with only one outlet attached to it shows that I have ...
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36 views

Is it legal to add a ground wire to a dryer circuit? [duplicate]

It would be much easier to put a ground in outside the dryer outlet than doing a homerun to the electrical panel assuming you pull both the existing wiring and the ground to the same surface mount 30A ...
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61 views

Ground rod driver for very large ground rods?

I have a large Jack/Demolition hammer I use this to pound very large ground rods/stakes into the soil. These rods are those over 1” in diameter. The largest rod driver I can find will fit 1” ...
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46 views

Not properly grounded/earthed

I know next to nothing about electricity and wanted to ask for some advice. Apologies for any cross-posting. I moved into a rented house in Spain a few months ago. Turned out it wasn't grounded. ...
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1answer
77 views

Are speaker wire output negative posts on receiver common-grounded? [closed]

I am buying a subwoofer (powered Sunfire HRS 12) that has high level inputs (bare speaker wire) and it says that it has it's negative posts joined (common-grounded) and that my receiver or amp also ...
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52 views

Distance between grounding rods

Here in Hampshire County, WV we are required to have 2 grounding rods. Question #1 How deep do they need to be? #2 This mountain was formed by a rock glacier before I was born. I can drill down 18",...
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31 views

water heater circuit requires a ground connection

Purchased a British Standard water heater with 3 supply connections -live, neutral and earth. The circuit design requires a ground. Tried to fix the water heater in Philippines which only has 2 pin ...
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68 views

What's the purpose of a wire from stud to outside?

On a couple of my studs there is a small gauge wire that seems to go through the outside wall to the outdoors (into the flue cavity) as shown in the picture. What is its purpose? This is on the wall ...
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77 views

What's going on with the electrical wiring (or devices) in this room?

I was soldering components onto a circuit board that was placed on a rubber-like soldering mat on a table. Simultaneously, I was listening to audio from my desktop computer, using wired headphones. ...
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2answers
658 views

Replacing bathroom exhaust fan without ground

I'm replacing a bathroom exhaust fan. The previous fan is probably about 30 years old and was not grounded. In fact, the wiring in the bathroom does not have ground. The fan will be mounted to a steel ...
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534 views

I purchased a Lutron occupancy sensor MS-OPS5MH-WH. I have no ground available.

I purchased a Lutron MS-OPS5MH-Wh. It has 2 black wires one green one blue and one bare. I hooked up the two black wires but do not have a ground (green and bare).. When hooked up the light is on ...
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97 views

Grounding of a Metal Roof Vent

My kitchen range hood is vented through the roof. The vent pipe on the roof is made of metal and extends a bit higher than the roof ridge. It is connected via metal ducts to the range hood. The range ...
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51 views

Some of our electonics are being fried

Would having the ground from a 277/480 panel hooked up to the ground of a 120/240 panel have the potential of causing problems, such as fried electronics?
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2answers
732 views

How to run ground, for electric supplied by generator and batteries through a inverter

I have a panel that is powered from the generator, it runs my major appliances. One of the circuits feeds my inverter/charger , which charges my batteries. A 2nd. panel receives power from the ...
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79 views

Chandelier wiring

I'm building a hanging light wither with multiple hanging bulbs. Basically, I'm wrapping and hanging 10 medium base , cloth cords around a 6x6x6 beam. On top of the beam I have them connecting to two ...
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103 views

Do I need a permit to route ground wire through the walls to outlet?

I have an ungrounded 2-prong outlet I'd like to upgrade to a 3 prong with proper grounding. I'm in GA if region matters. If I bought a spool of the correct gauge solid copper wire, either bare wire ...
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890 views

Voltage detected when separate breaker is shut off

I just moved into a new home. The living room has a covered up switch and a covered up receptacle nearby. Since there is no ceiling light, I presume this used to be a switch-controlled receptacle. It ...
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210 views

A room with no grounding

I entered into a 32-years-old apartment. I checked all sockets with a super-tester. All of them are OK, except two sockets in a single room, where the super-tester shows "no grounding". I talked ...
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2answers
79 views

Installing a light designed to be hard wired as a corded light- what happens to the ground?

I have a pendant light (single bulb) that used to be hard-wired in my previous house. I would like to install it in a closet as a plug in light (with an in-line switch). The fixture has a ground wire ...
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1answer
240 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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10k views

Dishwasher: Can my ground wire be exposed?

I just replaced my dishwasher, and noticed that the old unit had two wire connections: black-to-black wire and white-to-white wire. The ground wire from the home was exposed and wrapped around a ...
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131 views

Should I be worried that my ceiling light has current when turned “off”?

I am based in the UK. I was replacing a ceiling light when I noticed an issue. When I used a voltage screwdriver the live wire in the ceiling pendant was showing a voltage present even when the wall ...
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22 views

TV Arcs with Cablebox through both Coax and HDMI [duplicate]

Here is our setup Outlet in older house that was replaced with a GFI last year. (no issues until recent) The GFI doesn't have a ground wire running up from the basement. Just the white and black ...
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54 views

Ligth Switch with 4 wires

I removed an old light-switch and the following appeared: I went to Brico, showed them the old switch, and got the one below. I am wondering a bit how to connect it. I am a bit worried that I only ...
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1answer
2k views

Just bought old house, only some plugs are grounded

please help me! I am a first time home buyer and i just bought an older home. I have been researching the web for an answer about grounding. On my first and second floor i have very few grounded ...
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1answer
507 views

Do I need a ground for a 2-wire BX cable to a stove?

I am installing a new electric stove in a 20 year old condo. The existing BX cable has only 2 wires and both are hot legs. Do I need a ground wire or can I use the BX armor as the ground??
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1answer
525 views

Adding electrical service to detached garage

Please let me know if this sounds correct- Sub panel fed from 80amp breaker in main building 200amp load center. Roughly 75' of 1" PVC conduit from existing load panel, under existing timber deck, ...
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3answers
10k views

Can I run a sub-panel with only 3 conductors?

I am going to be adding a 3-wire fed subpanel to a dwelling. My understanding of the plan of attack is attached below (Please forgive my crappy, minimalistic MS-Paint schematics). As you'll notice, ...
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1answer
121 views

Is it possible to charge a battery from a live with without creating a second ground? [closed]

This came about out of a conversation with a friend and we were wondering if it was theoretically possible to power a device with a hot wire and have that device's neutral/ground be attached back to ...

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