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.

Filter by
Sorted by
Tagged with
11 votes
2 answers
1k views

Does NEC allow a metal box to carry the ground connection between separate conductors?

I found this box: You can see that most of the conductors have their grounds crimped together in the deep part of the box. A box extension was added to this at some point, so it is rather deep, but ...
Ryan Mortensen's user avatar
1 vote
0 answers
50 views

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
2 votes
2 answers
100 views

Emergency Disconnect Ground Questions

I want to start by saying I’m not an electrician. I’m building my own home and I’m doing the electrical myself. This is completely legal in my state of Maine. I have a question on how to properly ...
Joelp's user avatar
  • 21
0 votes
1 answer
89 views

Neutral Ground Bonding with 2 Main Breakers

My electrical service has a meter outside, followed immediately by a 200A breaker, then feeder wires head into my basement and supply a “main” panel with another 200a main breaker. This main panel has ...
William S's user avatar
1 vote
1 answer
31 views

Ground rod to exterior disconnect panel routing & panel attachment

I'm getting my shop power reconnected after prior storm damage and the inspector said he'd need to see a ground rod connection to the panel. I've included pictures of the existing ground rod though it ...
Merrick's user avatar
  • 155
1 vote
0 answers
21 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
2 votes
1 answer
324 views

Ground wire not connected to light switch

I'm replacing my 3 way light switch and noticed that there is no ground screw on the existing light switch and the bare ground wire is just tucked in the back of the plastic switch box. My new switch ...
Frank's user avatar
  • 21
1 vote
0 answers
56 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
1 vote
1 answer
89 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
0 votes
1 answer
47 views

Grounding Brass Fixture

The light fixture has no grounding wire attached. Since it’s all brass and going on the porch I think the exterior must be grounded. Do I just affix a wire to the metal somehow? Probably at the ...
AlwaysThinkin's user avatar
0 votes
1 answer
66 views

replacing my old galvanized pipes with pex, what do i do with the ground wires

so ive got galvanized water lines servicing my house, along with that 6 or 7 wires that are clamped to the pipes,im going to relace everything with pex, im pretty sure i cant just clamp the wires back ...
rocky's user avatar
  • 1
2 votes
0 answers
74 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
1 vote
0 answers
66 views

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
  • 11
1 vote
0 answers
34 views

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
0 votes
1 answer
44 views

any gotchas when adding extra exterior ground

I have an old house with a single external ground: a thick multi strand silver colored wire bonded to rebar. Current electrical code in many jurisdictions ask for two ground rods, not less than 6 ft. ...
aaron.kyle's user avatar
0 votes
1 answer
22 views

Safety of direct bonding to exterior ground for CSST

The instructions for my yellow CSST propane line require it to be bonded where the service enters my home. They also specify not to bond at two points, and not to bond at the appliance. The appliance ...
aaron.kyle's user avatar
0 votes
0 answers
63 views

Electric wiring for new LED lights when missing ground wire

I am changing basement lights to new LEDs. The old light fixtures turned on/off via pull string and only two wires (white/black). The new LEDs are the same with the addition of a ground wire. My ...
Arturo Lee's user avatar
3 votes
1 answer
270 views

What to do with ground wire downstream from ungrounded GFCI?

I am replacing an ungrounded receptacle with a GFCI receptacle, and I will be adding two new receptacles downstream from the GFCI receptacle. In another post, someone had quoted from one of the code ...
P-Brain's user avatar
  • 33
0 votes
1 answer
116 views

No Ground Wire in Light Fixture Box

I am changing out my dimmer switch that has not worked in years. When I opened it I do not see where I can connect the dimmer box ground wire to anything. The dual switch next to the dimmer does not ...
Dion's user avatar
  • 1
1 vote
1 answer
62 views

What kind of clamps are used to attach a main panel's grounding wire to two grounding rods?

The grounding clamps I've seen online (see pic) don't seem suited to attaching a main panel's grounding wire to two grounding rods; the orientation of the part of the clamp that grips the wire does ...
mr blint's user avatar
  • 1,788
1 vote
2 answers
107 views

Ground backstabbed into neutral with neutral on ground terminal on a series outlet?

1960s build, electrical redone with a 200 A Siemens panel (where each breaker is labeled with/serves two circuits) about 15ish years ago. Replacing a receptacle, I came across this series outlet with ...
msanford's user avatar
  • 629
0 votes
1 answer
220 views

Wiring grounds from two separate circuits

I am trying to build a rack that has two loads and each load will be powered from a separate circuit. Please see my diagram for reference. Grounding the two enclosure boxes is pretty straightforward. ...
flamezdude's user avatar
1 vote
0 answers
64 views

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
6 votes
1 answer
670 views

How can I make sure I have a ground wire connection for my range?

I recently replaced my electric range. While doing so I notice that the previous range had neutral and ground bridged, even though it had a 4-wire cord. I'm now a little bit insecure about what to do, ...
Daniel's user avatar
  • 63
0 votes
0 answers
24 views

No Grounding Screw When Installing Ring Floodlight [duplicate]

**`I’m installing a Ring Floodlight at an existing light fixture, but there is no grounding screw to attach the green grounding wire from the Ring onto. Is my best option to attach the Ring grounding ...
Bruce's user avatar
  • 1
4 votes
2 answers
272 views

How to connect ground from smart switch to the metal junction box

how do I connect the ground wires from my Kasa smart switches to the metal junction box? As shown in photos, the four screws at the back of the j box already have copper wires under. Can I just add a ...
Raffi's user avatar
  • 47
0 votes
0 answers
57 views

Electric water heater grounding wire not connected

While replacing an element in my electric water heater, I noticed this wire, which is attached to the shell of the water heater, is just sitting in the lower element area, without being attached to ...
Itinerati's user avatar
  • 135
19 votes
2 answers
4k views

Sketchy looking electrical outlet

I am updating older beige outlets to new white ones around my house. I saw this one has the grounding wire stabbed into the back and white wire not connected. What the heck is going on here? Any ...
Armstrong's user avatar
  • 191
0 votes
1 answer
137 views

What size wire, breaker, and panel do I need for my shed?

My shed is approximately 200ft from my main inside breaker panel in my house. Shed size is 20x20. I want good lighting, approximately 8-10 120V plugs, and one 240V plug. What size wire, size of inside ...
Adam Miller's user avatar
1 vote
1 answer
138 views

Can the neutral wire be grounded at a manhole (before the service disconnect)?

Consider the following scenario. A 240/120-V split-phase overhead service. The service conductors from the pole-mounted utility-owned transformer come overhead with a guy wire. They enter a weather ...
alejnavab's user avatar
  • 133
0 votes
0 answers
398 views

Does a lighting fixture without a ground wire need one? [duplicate]

I just bought a lighting fixture (a LED light) that has a power and a neutral line, but no ground. Is this typical for newer low power lighting, or is this lighting fixture just trash? There are no ...
Zen00's user avatar
  • 45
1 vote
0 answers
155 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
  • 11
0 votes
1 answer
83 views

Proper grounding of old fuse panel now turned J-Box

I am working on my old house from the early 1900s. It has 100A service, a 6x15A FUSE panel that was turned into a sub panel powered by 2x 20A circuits from a small "newer" 100A breaker panel....
Dentpusher's user avatar
3 votes
0 answers
120 views

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
4 votes
1 answer
764 views

Do I have to run the #4 bare copper ground wire continuous with out a break in the wire from the new 200amp outside meter/main panel combo to the 2 g

Continued from question, do I have to go from meter/main combo to the 2 ground rods ,then back inside connect to outside part of my copper water line,then back to the existing 100amp main breaker box, ...
Ed Hoffman's user avatar
3 votes
2 answers
142 views

Is there a way to check if your breaker box is grounded?

I've got an old home, built in 1945. I assume the electrical box in the basement isn't that old. There's a ground to the main water line entry. There's also this other wire that looks like a ground ...
represton's user avatar
  • 706
0 votes
3 answers
198 views

Connecting a smart switch ground wire to a metal junction box

I try to connect a smart switch with an integral ground wire. There is no ground wire connected to my old switch. Can I connect the integral ground wire to the small hole circled in red in my photo. ...
Raffi's user avatar
  • 47
0 votes
1 answer
105 views

Why Surge Protection Device (SDP) fails and how to deal with that [closed]

The power surge from the electrical line has taken out electrical appliances from many houses not sure if it's a power sub station fault or primary lightning strike on power pole. But some of the ...
CuriousMan's user avatar
0 votes
1 answer
32 views

Grounding for exterior cable/phone interface boxes

I have a cable and phone (currently unused) media boxes on the outside of the house to which the service is connected from the alley aerially. The picture does not show the conduit that goes between ...
amphibient's user avatar
  • 7,459
0 votes
1 answer
210 views

Replacing a 4-gang standard switches with smart Kasa switches

I am trying to replace a 4-gang standard switches with Kasa smart switches. How do I connect all the neutral white wires from the switches to the white neutral bundles in the box? There are too many ...
Raffi's user avatar
  • 47
2 votes
1 answer
144 views

Can I use a 6AWG ground wire for a 100A feeder that has a section SER 1-1-1-3 and a section THHN?

I'm running a feeder to a 100A sub-panel. The total run is about 90 feet. 60 feet is in an attic, and I'm planning to use Aluminum SER 1-1-1-3, the other 30 feet is through a 1.5" PVC conduit on ...
Christian K's user avatar
1 vote
1 answer
102 views

How to Ground flexible metal conduit (FMC)

I’m looking to run 3 circuits 20A 120VAC (3 wires per circuit; H,N,& G, 12 gauge THHN) together through 3/4” FMC. Circuits will have ground fault and arc protection breakers. Residential basement ...
Ray2446's user avatar
  • 11
3 votes
3 answers
959 views

Does adding an explicit ground wire to EMT conduits provide any advantages?

I am well aware that NEC allows the EMT conduit to be used as grounding conductor. In my home, there is no dedicated grounding wire through the EMTs. I know this is fine. When I recently got HP/HPWH ...
divB's user avatar
  • 1,201
1 vote
0 answers
61 views

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
1 vote
1 answer
370 views

Common ground wire for multiple circuits with different wire sizes

I'm wiring my workshop and want to use a common ground wire for multiple circuits. I've found several answered questions here about using a common ground wire but I haven't found one for my specific ...
JeffC's user avatar
  • 31
0 votes
1 answer
61 views

How far does my grounding wire wander?

I don't know if my question is even answerable, but I'd appreciate any insight. My home was built pre-1960. There is a grounding wire that goes into the ground (obviously) around 6 inches from the ...
stalactite's user avatar
0 votes
1 answer
93 views

Ground has power

Half of circuit works other half doesn't, until I use ground wire instead of neutral with black wire. Why does white wire read only 53V? All wires are hooked up the way they were previously and there ...
John's user avatar
  • 1
0 votes
0 answers
58 views

14 volts on bare copper ground wire at light switch with breaker off & low volts on hot wire with breaker on

so I have two light switches on each end of our hallway that controls the hall lights (3 way switches). For years it hasn't worked or one of the switches were bad, because you could wiggle it, and the ...
Steven Fisher's user avatar
0 votes
1 answer
104 views

splice ground wires together in conduit bodies

Is it against code to crimp(Bond) ground wires together inside conduit bodies or to extend the ground. a city inspector(Bronx) stated it was not up to code and I'm unable to find any information on ...
Alberto Ortiz's user avatar
-2 votes
1 answer
74 views

Are Marbonite tiles good electrical insulator

I know whenever we handle Circuit breaker or Main Supply lever at home. We have to wear a footwear which is non-conductive and insulated glove. My question is , As far as I'm aware a tile which is not ...
King's user avatar
  • 107

1
2 3 4 5
21