Questions tagged [ground]

For questions about stuff physically in or on the ground. Questions about electrical grounding and/or bonding should use [grounding] instead.

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1answer
56 views

How to ground solar transfer switch

I am installing an off-grid solar system to power some external buildings, but I want an automatic transfer switch so that outlets will be grid powered when the solar batteries are low. Can I run a ...
2
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2answers
65 views

How should I replace door chime transformer at breaker panel?

I'm replacing a door chime transformer with a new 16v 30va transformer to accommodate a new Ring doorbell. The existing transformer is attached in our circuit breaker panel through a knock out at the ...
2
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1answer
85 views

Is THWN wire appropriate for an underground vehicle charging circuit?

We recently purchased a Tesla Model 3 and are planning on adding a 240V NEMA 14-50 outlet in our detached garage to improve charging speeds. Tesla's documentation specifies 6 AWG copper wire with 4 ...
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1answer
46 views

Installing cement board as trailer underpinning

I want to install a Cement board with possibly covering with stucco or thin brick/rock around my double wide trailer, replacing the brittle underpinning thats there now. Is it possible? And..What ALL ...
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0answers
44 views

Replacing a bathroom fan - two ground wires?

I've purchased a Broan NuTone fan to replace the old one in my bathroom. The fan itself has a white wire, a black wire and a green wire. The wiring in my house consists of a black wire, a white wire, ...
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1answer
50 views

I need “silver” colored wire to run through chain for hanging lamp to connect to ground where it mounts to ceiling

I bought a "Brushed Nickel" ceiling fixture to hang over my dining table, but it did not come with a long enough chain or wire. I found the chain & two strand "lamp" wire in &...
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1answer
34 views

Replaced 4-way electrical switch with new one with ground. Will it work without the ground?

I noticed that one of the three switches used to control our kitchen lights was acting funny. By funny, I mean that when I flipped that switch to turn the lights on there was a delay of about 1 second....
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3answers
41 views

New GFCI to replace one that was in the subpanel of a hot tub

I have a dedicated 50 amp 240 v circuit to a hot tub. Had it over 15 yrs no problems. Recently the GFCI that was in the sub panel would buzz and then trip or sometimes work just fine after resetting....
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1answer
164 views

What is the correct wiring (including Ground) for two main load centers plus transfer switch?

I will be building a new house and plan to have 400A electric utility service split into two 200A main load centers. One of those load centers will be tied to a whole house generator via an automatic ...
1
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1answer
102 views

Must the ground wire be continuous from the panel box, through the meter to the grounding rod?

Splitting service to a new power meter. I just cut the wires coming out of the meter box and now the grounding cable is 2' short of the grounding rod. Must the ground wire be continuous from the ...
2
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1answer
74 views

Is this metal box grounded already?

I live in Chicago. I try to replace my single pole light switch to a dimmer light switch. When I open the current light switch , I can't find the ground wire. How should I connect my new dimmer switch'...
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2answers
95 views

Smart dimmer: neutral, ground and copper wire capped together

I called an electrician today to help me install some smart dimmers in my home. For one of the dimmers, he tied up the neutral and ground wires from the dimmer to the copper ground wire in the wall. ...
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2answers
185 views

Studio apartment only has 2 prong outlets, I need to plug my PC into a 3 prong one

I recently built my PC, and it is plugged into a 2 prong outlet through a surge protector using a cheater plug, but I get slight shocks when touching the case. While I can remedy that just by not ...
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3answers
127 views

Is there an alternative to buying a tamper to compact the ground?

I plan to build a brick wall, so I need to compact the ground first. The hardware store sells a tool called a tamper, that sells for $60 and only weighs 15 lbs, so it seems inefficient. How is that ...
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2answers
73 views

What is a ground loop in an electrical service?

I can't figure out what a ground loop is in an electrical service (residential, commercial, industrial). All I can figure out is that it has something to do with different potentials in the system, ...
4
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1answer
137 views

22kw generator mounting pad on slope

I need to build a pad for a 22kW generator I am installing for my house. The image shows the situation. This generator is quite heavy. I plan to pour a rebar reinforced 6" pad for it. My ...
0
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1answer
92 views

3 wire conductor to an electrical subpanel - Can I add a separate conductor for neutral in same conduit?

I'm installing a subpanel to bring power to a garage. Answers to similar questions make it clear that a subpanel must isolate ground from neutral, so the bonding screw will be removed at the subpanel....
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2answers
75 views

How to find underground cavities below properry?

I purchased land in an area that was near a former mine. From geological maps, I see the official location of the mine is several blocks away from my property, however, locals told me there were ...
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3answers
43 views

How can I cut slots in the ground to install insulation panels?

To build a geothermal greenhouse, I need to insulate a thermal mass -- basically the ground directly the greenhouse. The insulation will be for the underground "walls" only, no floor, and 5 ...
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0answers
146 views

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 ...
2
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1answer
122 views

Can I use an insulated ground wire in a sub-panel?

I'm running a new sub-panel to my basement (the main panel is in the garage). I bought a 500' spool of 6 AWG THHN. The distance to the sub-panel is about 110' so I cut the spool into 4 x 125' lengths. ...
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0answers
40 views

Basement in a mud-brick house near a lake?

For the purpose of the short story that I am writing I have come with an idea of a mud-brick small building (base floor + top floor, just a few rooms), lost somewhere in the north Nigeria. The ...
2
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2answers
43 views

Safety differences between the various types of outlet (two-/three-prong, grounded/ungrounded, with/without GFCI)

I am an ordinary person with absolutely no knowledge regarding electricity and how it works (things like circuits and such) and I never really cared before until now when I sense potential safety ...
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2answers
32 views

Have four-conductor feed at detached garage subpanel, how to verify the ground?

I'm currently rewiring my new-to-me detached garage. Garage is from the 70's but has a newer Siemens panel (previous owners added a hot tub). The feed from my service panel is a sheathed 4 conductor ...
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1answer
43 views

Advice on light switch replacement in old house

The light switch in my bedroom just started having issues. Sometimes when you flip the switch off the light remains on or the light flickers as if it's still getting partial power. The house is from ...
1
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1answer
94 views

Loud circuit breaker pop with burned neutral wires. Need advice on next steps. Photos in description

At the bottom are some photos to help aid in my description. I have 3 circuits leaving my main panel, traveling ~5 feet behind drywall in NB-B cable to a surface mounted junction box where the NM-B ...
2
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3answers
311 views

4 prong wire outlet, 3 wire dryer - can’t find ground screw

So I’m not entirely sure where to put the ground wire. Do I need to buy a ground screw for that hole? Or is there something else I can attach it to?
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1answer
27 views

stiff textile material for simple underbed “drawer”

I have a 90cm x 200cm bed in a corner of my room. I want to use the floor beneath it as storage, but in a way that I do not need to crawl under it to get the stuff in the corner. I have a PVC floor; ...
5
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2answers
5k views

Why am I measuring 60v at some outlets?

The house I bought a couple years ago had a couple outlets in a small room in the basement that didn't work. Now I'm troubleshooting them. It's a finished basement so I can't tear down walls. There's ...
2
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2answers
94 views

Can I touch the metal frame or do I need to ground it?

I live in Eu and I connected the blue - neutral and the brown - hot to the light jack. There is no third ground wire in the cable and i am afraid to touch the black steel frame - is it dangerous, ...
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2answers
163 views

Apartment using ground wire as neutral

I was answering a trouble call in an apartment today that a pendant light fixture had come down and was hanging by the wiring. I went to remount it, but noticed that the light fixture wiring was ...
4
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1answer
640 views

8/2 wire for 240v EV charger

I'm new here. I would appreciate any helpful info. I have installed an EV level 2 charger in my garage. It is a 30 AMP charger. I is around 8 feet away from the breaker box. I used 8/2 wire to be on ...
3
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2answers
3k views

Do metal outlet boxes act as grounds?

Here’s a photo of the inside of a switch I’m replacing. As you can see it has no ground wire, plus it’s got a blue wire instead of the normal black. All the new 3 prong outlets I installed in this ...
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1answer
112 views

Is this wiring safe [duplicate]

The wall box is from the mid-1950's and my multimeter shows that it is grounded. There are a solid 120 volts when testing between live and ground. I noticed a bare copper wire coming from the cloth ...
3
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2answers
484 views

Can I combine ground and neutral wires before they connect to their bus bars?

I finally did my 50 AMP 15-40 Nema wiring. Couple of questions on it. I don't have enough ground and neutral wire to reach the ground bar of the electric panel. Is it ok to join both neutral and ...
0
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2answers
122 views

electrical current detected in the stud

I have an electrical current detector that is beeping positive on the 2/6 studs that the 12/3 romex three way wire runs through. The door header that the wires run over at one point also ...
0
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2answers
108 views

Lamp Project With No Ground Wires

Question 1. I am building myself a lamp and I am using a plastic 1 gang outlet box. There are no ground wires. How can I properly ground the lamp? Question 2: Can I attach a metal bar and place it ...
1
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2answers
115 views

RCD wiring with heating cable

Hi, I want to use the heating tape (constant wattage) and I was told that I should use RCD for the safety. I am new to RCD so I wanted to double-check if this is a correct way to wire the RCD with ...
1
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1answer
129 views

Where do I connect the ground wire of a transfer switch being connected to a sub-panel?

I would like to add a gen-tran manual transfer switch to my electric panel but I live in a condo where the main panel is in an external meter room and my only interior panel I assume is a subpanel. ...
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0answers
20 views

Replacing a light fixture [duplicate]

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. The new fixture is suspended not flush ...
1
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0answers
41 views

Main Electric Panel Neutral Bar

I have a Siemens 200 amp main service panel in my basement. The main service lines are two black and one black with a yellow stripe going to the neutral bar. The grounding bar is attached to a ...
3
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2answers
115 views

Mysterious ground wire

So I’m trying to replace my old light switches with some nice new dimmers but I have a problem. As you can see in the picture, all the ground wires run up and out of the box to an unknown location. ...
1
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1answer
546 views

How do I protect the front side of a wood retaining wall?

I have a wood retaining wall made of 3x12 pressure-treated boards similar to the one pictured here. The backside has MiraDrain and 3/4" drainage rock. I have an excess of earth to manage and one ...
0
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1answer
215 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 ...
0
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1answer
86 views

How do go from a single light/fan bathroom switch to a double paddle with no ground or hot wire?

The old switch had just 2 side wires, one for the fan and one for the light. There was no ground of hot. I'm installing a legrand radiant 2 in 1 paddle switch, and it's not working. I'm assuming that'...
3
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3answers
1k views

Neutral and ground connected to one bus bar in subpanel; should I change?

At my house, there is a subpanel that serves a pool area, served by one 30 amp 240v circuit. The panel, which I think was installed about 30 years ago, has just one bus bar that the neutrals and ...
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0answers
70 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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0answers
73 views

Electrical wiring hook up sequence

I have found a box that as three duplex electric cables connecting. The neutral (white) from wire 1 and wire 3 are connected. The hot (black) from wire 1 is connected to wire 2, and the hot from ...
2
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2answers
90 views

Will a galvanized tin roof act as a ground for a magnetic rooftop antenna

I just installed a magnetic based antenna on my galvanized tin porch roof. Will the metal roof act as a ground for the antenna? I am unable to attach a ground block to the antenna cable, because the ...
2
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1answer
74 views

There appears to be no ground - what do I do?

Hi! Trying to change a light switch in my house. I am Chicago within city limits. House is pretty old...it was “gut rehabbed” in the 80s but that doesn’t really mean anything. Actual building been ...