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Questions tagged [grounding]

Grounding (also called earthing) refers to the practice of providing an un-energized path back to the main neutral. This is done to allow any electrical faults to flow into that circuit, instead of anyone touching the fault. Use with the [electrical] tag.

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Does an original service disconnect without neutral bonding violate code?

Single family home built in 1987. Question is regarding the as-built: Is it grandfathered and does not be updated? There is no neutral-ground bond in the 100A breaker equipped main service disconnect ...
evolvingpowercat's user avatar
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368 views

How do I manage grounding when installing a metal extension on a plastic box?

I've been repairing an outlet that's not supposed to be recessed, but is, so I purchased a box extension from the local hardware store. When I tried to put it in, I realized it interferes with the ...
Yet Another User's user avatar
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76 views

How do I get my grounding up to code? Subpanel is missing grounding connector

I have a bit of a situation with my interior subpanel not being grounded properly. The interior subpanel does not receive a ground wire from the main service panel where it is grounded (to the water ...
Dong Shi's user avatar
2 votes
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1k views

Ground Rod in Raised Garden Bed

My detached garage has a subpanel fed by 3-wire plus ground from the main panel on the house. It's 8AWG copper conductors plus 10AWG ground breakered at 50 amps. In the distant future I may run new ...
aerospark's user avatar
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Faults/current leak in an ungrounded electric setup (connected to a grounded setup)

I'm troubleshooting the wiring from our neighbor's house. His electric setup is ungrounded. Our house, pending an "official" installation, gets its electricity via a ~30M cable (3x1.5mm2) ...
Markus AO's user avatar
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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 ...
Haozhun's user avatar
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what is the proper connection method for wire to wire connection for outdoor ground bonding

I'm putting an above ground pool in the backyard and code requires that I bury a #8 gauge wire 4-6" all around the perimeter. Then it is to be attached to the metal pool frame at 4 equidistant ...
confused's user avatar
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Can i connect my solar system to the ground wire of a grid outlet?

I have solar panels on the roof (ungrounded) and an ATS to switch between solar (ungrounded) and grid power. (grounded) EDIT : Sorry, my question wasn't clear enough, I'm talking about AC. My ...
bob dylan's user avatar
2 votes
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145 views

Do I need to ground my off-grid house inverter?

I'm building a battery box for my off-grid house, consisting of a 155AH AGM sealed battery, Krieger 1100-watt inverter and a Samlex SEC-1230UL 30A battery charger for using my generator to charge the ...
Mark's user avatar
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186 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 ...
StayOnTarget's user avatar
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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 ...
Luke G.'s user avatar
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How to properly ground panel box if I'm replacing all copper with PEX?

So I've got a 1950s house and I'm in the planning stages of a project to replace all the copper plumbing with PEX. The copper is in really bad shape, there are ancient gate valves all over the place ...
Livin' In The Mountains's user avatar
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25 views

Low-voltage Wires Alongside a Grounding Electrode Conductor?

I have a bare copper Grounding Electrode Conductor running from my main panel to my main water supply in a well room (about 60 ft away). It passes through quite a few holes in my joists on its way, ...
Steve P.'s user avatar
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61 views

LED power supply with no ground, on what looks like a GFCI breaker

I am installing 12V LED strip lighting in 5 closets of my home. My intention is to use a single Mean Well HLG-185H-12A power supply in the attic, and then run low voltage wire to each closet through a ...
nickwesselman's user avatar
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What's a tidy way to transition a THHN ground wire out of EMT?

For some networking equipment (PoE security cameras, PoE IoT devices, outside point-to-point wireless links to other locations) that will be mounted on the perimeter and roof of my residence, I'm ...
Ryan's user avatar
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grounding rigid conduit (RMC)

Does a run of electrical rigid metal conduit (RMC) need to be grounded at both ends, if I am not using it as the circuit ground ? For context, I am putting a electric vehicle charging station (EVSE) ...
RustyShackleford's user avatar
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Grounding question: Honda eu7000is generator connected through PG&E backup power transfer meter

Earlier this year PG&E installed a free backup power transfer meter at our California property (info sheet here). Using the cable supplied with the meter, it connects our Honda eu7000is inverter ...
Dave Millman's user avatar
1 vote
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284 views

Where should I attach the ground wire in a recessed light?

I have a recessed can light on the 1st floor with e26 light bulb (Below are pictures) and want to upgrade to LED. I have the LED with metal box and have a green grounded wire. I do not see a place to ...
Charles's user avatar
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Does a subpanel at boat lift need grounding rods?

I have a boat lift that is wired with 8/3+insulated ground (240v). I want to add a subpanel at the lift to install a 120 outlet and future overhead lights. Initially, I will have a GFCI 240 breaker ...
Lic0rice's user avatar
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46 views

2 out of 3 sets of (black) wires in receptacle are hot

I am trying to replace old receptacles in my 1952 home. None of the receptacles have ground wires, so I am replacing the first ones on the line to protect the ones connected to the load using a GFCI ...
JuanR's user avatar
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31 views

Connecting two residential units grounds via metallic electrical box and armored cabling

A circuit from Unit A and a circuit from Unit B converge in a metallic box. The wiring is old armored cable containing two conductors. There is no dedicated ground conductor. Each unit has its own ...
Jeremy's user avatar
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212 views

How to connect loose earth wire to hanging lamp

I bought a hanging lamp which came with two wires (L and N) connected to it, plus a loose earth wire with a "ring" attached to it (see photo below). I would need to connect the lamp to the ...
HBv6's user avatar
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Any reason NOT to go whole hog in surface prep for installing earth-ground bonding clamps above ground outdoors?

Background I'm tidying up the various outdoor bonding to earth ground in my 1960s era suburban Calif. house. Bare copper wire, either 6 or 4 gauge, will connect them to the appropriate termination on ...
Armand's user avatar
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67 views

Grounding An Electrical Receptacle Inside Enclosure

My company ordered several power cabinets to use mains power from a generator to power some DC equipment on a truck. We also requested a NEMA 5-15 duplex receptacle on the front for ancillary loads. ...
vir's user avatar
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646 views

Using a UPS on 3-prong, ungrounded outlets and worrying voltage leak

it seems this question is rather common. I live in a rented appartment built 70+ years ago. Back then, the building was built on a budget, and it was code-compliant to have ungrounded 1-phase 120VAC ...
P. N.'s user avatar
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935 views

House built in 2010 - where's the grounding rod?

This is the main panel outside the house (a subpanel is inside the house right behind it). I was wondering where the grounding rods are (I think they've been required by code for a while?), but I can'...
K. Don's user avatar
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124 views

Earthing a gate motor

I'm installing a gate motor for out front gate and I'm trying to figure out the best way to install the earth connection. The operator itself comes with a ground wire that's attached to the housing, ...
John M.'s user avatar
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2k views

Grounding cable TV coax near cable entrance: can I run a ground wire into a breaker panel? or defer grounding to 50 feet inside the house?

My new cable TV coax will enter my house at the far corner relative the location of all my other utilities (main electrical panel, water, gas, telephone, and a wire to an existing buried ground plate) ...
CCTO's user avatar
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At a wall socket, is using thin wires at ground pin dangerous?

I paid a hardware shop owner to modify my wall light switch to socket for my washing machine in bathroom. The power in my area right now is 3 phase 220V AC. At first it is a switch. Then we modified ...
Superuser's user avatar
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1 vote
0 answers
97 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 ...
tnknepp's user avatar
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1 vote
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57 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 ...
Abhimanyu CS's user avatar
1 vote
0 answers
126 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 ...
idy's user avatar
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1 vote
0 answers
381 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 ...
Ben's user avatar
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1 vote
0 answers
571 views

Dishwasher chassis outputting an AC voltage

I've recently noticed that touching the metal interior of my dishwasher gives me a slight tingling. I put that (stupidly) to static electricity. For "fun" I then decided to touch a finger on the ...
David Wheatley's user avatar
1 vote
0 answers
192 views

Can armored cable cross over a drain pipe?

My electrical system uses the armored cable sheathing as a ground path. I was placing some lines of AC in my walls, and I uncovered a drain pipe in the way. At first, I covered the AC with ...
user3080392's user avatar
1 vote
0 answers
181 views

How to correctly ground long distance from main disconnect to first panel

I've got a property with an existing very sluggish electrical installation which consists of a service drop at property entrance, no main disconnect and a 130' underground run to the living space (...
Marian's user avatar
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1 vote
0 answers
97 views

Will improved panel grounding resolve AM radio static?

I live in a manufactured house. I have two electrical panels--one outside on the electrical pole where the electrical meter is at and another one in a utility room in the house. The one on the pole ...
alex garza's user avatar
1 vote
0 answers
72 views

NEMA 14 with integral JB -- how can I ground it to EMT?

There are two general styles of NEMA 14 receptacle in wide use -- one is the conventionally yoked style that is used with a separate junction box in flush mount applications, but can also be used in a ...
ThreePhaseEel's user avatar
1 vote
0 answers
108 views

Could a missing ground connection in a light box disable other fixtures?

I replaced an existing outside light fixture with these security lights. I properly connected the wires together (including ground). After installing I was reading the install instructions a bit ...
Sayed Ibrahim Hashimi's user avatar
1 vote
0 answers
539 views

Can I ground a new light to an old metal box via a switch yoke?

All of my switches are installed in old metal boxes with no threaded ground screw holes. The boxes are wired using old cloth BX with no ground wire(grounded via casing). Some of the BX wire ...
Dave's user avatar
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1 vote
0 answers
422 views

Why showing bad ground on my detached garage?

Everything has to be conduit by code. When i use my stop shock tester everything in the house shows no problems which is two wired. However, when those wires run from the panel box to the detached ...
larry pinsky's user avatar
1 vote
0 answers
112 views

Power on disconnected ground wire

Last week I've put lights in the garden. There was already a wire coming out from a switch in the house so it was an easy job. Since there is a door at the other end of the garden I though it would be ...
algiogia's user avatar
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1 vote
0 answers
2k views

Could a loose ground wire cause an AFCI breaker to trip every 3-4 days?

I have a circuit connected to an AFCI breaker circuit breaker, which is running into our upstairs bonus room as well as upstairs guest room area. I changed out an outlet in one of the boxes, and ...
saigafreak's user avatar
1 vote
0 answers
227 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 ...
Justin Dearing's user avatar
1 vote
0 answers
313 views

Has this light earthed itself?

After accidentally earthing the live wire going to the outside light whilst putting a faceplate back on (patched up now), the light has stopped working. I've just been out with a multimeter to see if ...
MrNorm's user avatar
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1 vote
1 answer
102 views

Junction box from main to subpanel - what to do?

I am doing a DIY 400A service upgrade and I would like to get some vetting on my work before the utility connects it and the city inspects it. The meter/main combo is outside behind this wall of the ...
Alessio Sangalli's user avatar
1 vote
1 answer
934 views

Anything wrong with this ground wire? Is it supposed to be insulated?

Panel is from the late 1970's. Looks like there was some insulation on the ground wire, but most of it has come off. It's the same way through the crawlspace.
What-About-Bob's user avatar
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33 views

New Construction Electrical from meter box to: 1-200 amp house service and 1 -separate RV Pedestal with 120 receptacle, and 30 and 50 amp receptacles

We live in Nevada and have 200 amp service. We are running from the meter box to the house (150 ft) with 4/0 4/0 2/0 AL URD to the service panel. We also want to run from the meter to a campground RV ...
dawn scott's user avatar
0 votes
1 answer
45 views

Does short CSST line off of copper need to be grounded to main panel?

The LP gas in my house runs through soft copper tubing. I am adding a gas range and have a chunk of CSST left from adding heat to an outbuilding. If I tap into the copper and run CSST to the range (...
T. Laubach's user avatar
0 votes
0 answers
61 views

Is there an earth bridge missing in my PV installation?

In the DC installation depicted in the following image, is there a bridge missing in the earth distribution in the center? The top right earth wire is coming from the potential distribution rail ...
serbap's user avatar
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