All Questions
Tagged with grounding grounding-and-bonding
88 questions
3
votes
2
answers
690
views
How can I properly ground my service disconnect panel?
I am not sure my house is properly grounded.
The meter outside connects to a single breaker panel with a 150 amp breaker (I will call this the service panel). This service panel is not connected to ...
- 981
2
votes
1
answer
82
views
Is this part of the grounding electrode network and does it need to be hooked into my new service?
I found this on the outside of my house. As a note, the house was build in the 50s and the electric probably hasn't changed much since that time - the grounding all around is pretty bad. I'm doing a ...
- 831
3
votes
1
answer
178
views
What are the bonding and grounding requirements for my heavy-up and new panel?
Jurisdiction is Dayton, OH - currently on NEC 2023.
I'm upgrading from a 100A service going through a meter on the outside of my house and into a main service panel inside my house.
The new system ...
- 831
12
votes
3
answers
3k
views
Can I use a hose clamp to ground a wire to EMT?
Question:
What are the rules for how to attach a wire to an already grounded EMT conduit? Can I use stainless steel host clamp and tighten down?
Background:
I was installing a metal box for a light ...
- 1,215
12
votes
2
answers
2k
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 ...
- 409
1
vote
0
answers
130
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 ...
2
votes
0
answers
83
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 ...
- 51
0
votes
1
answer
35
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 ...
1
vote
2
answers
164
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 ...
- 629
1
vote
0
answers
100
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 ...
- 31
1
vote
1
answer
227
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 ...
- 143
0
votes
1
answer
116
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....
3
votes
3
answers
2k
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 ...
- 1,700
0
votes
1
answer
120
views
Dead Electrical Leg - Ground or wire-nut and “Abandon”/Tuck?
I have a mess of a “finished” basement in CA (California) that was wired atleast 4x 1922, 1940-50, 1980 and again in 2020, before I came to own the pile of garbage.
I am redoing a lot of the wiring ...
- 125
2
votes
2
answers
542
views
How do I connect a separately run equipment ground to a grounding electrode conductor? [duplicate]
Jurisdiction
Kentucky, USA; 2017 NEC / NFPA 70
Background
I live in a house built in the 50s that was originally wired with ungrounded outlets. Many parts of the house have been rewired, but a room ...
- 123
1
vote
2
answers
159
views
Is my plan to update ground rods at my service panels reasonable?
My older home is currently grounded with what looks like two lengths of old rebar driven vertically in the ground. I know that the last time the grounding was touched was over 20 years ago, and I ...
- 439
2
votes
2
answers
690
views
What are the grounding/bonding requirements for outdoor-mounted power over Ethernet (PoE) security cameras?
I am planning a construction project; as part of it, I will install several security cameras mounted to the underside of my soffits. The cameras will be connected and powered via a wired network (...
- 251
1
vote
2
answers
244
views
Why separately ground the device case? [closed]
Why separately ground the device case?
I had some work to do to install network devices in a rack. And in the course of work, I had a question. I had a Cisco switch in my hands, on the front panel of ...
- 113
9
votes
1
answer
650
views
Do the EGC and GEC both terminate at grounding bar in new sub-panel in detached building (garage)?
Edit: My rough location: Grand Rapids, Michigan, USA
There are a million questions and youtube videos on the topic, and I'm sure one of them clearly answers this question because it seems so ...
- 91
2
votes
2
answers
2k
views
Main panel grounding modification (two grounds in box to single ground wire)
My old house’s main panel has two ground wires, one leading to pipes, another to a grounding rod. Because the bottom is the only easily-accessible side for new circuits, and because most of the ...
- 545
5
votes
1
answer
2k
views
How is a Ufer ground attached to the panel?
I am planning a addition to my house. I'm not sure of the current state of the house's grounding system (built in the 1890s, last updated in the early 1970's by my estimation, so "minimal" ...
- 48k
4
votes
2
answers
3k
views
Utility requires EGC wire to be bonded in meter can, do grounds and neutrals have to be separated in main panel?
My utility requires a bare #6 wire to run from the the rods to the meter pan and be bonded with neutral. The wire then runs to the ground bar in the panel.
I have an old panel with only one bar for ...
- 43
3
votes
2
answers
7k
views
Should a subpanel in the same building have its own grounding rod?
I'm installing a subpanel on the opposite side of my home. To be clear the subpanel will be attached to the same structure as the main panel (the main panel does have a grounding rod), just on the ...
- 161
1
vote
0
answers
1k
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'...
- 407
0
votes
2
answers
470
views
Ground wire in subpanel
I'm adding a circuit to a subpanel in my garage (built in the late 70s), and I've been reading a lot about subpanel ground / neutral bonding (how it's not supposed to be bonded at the subpanel, and ...
- 247
11
votes
2
answers
4k
views
I have 11V between neutral and ground, how can I isolate the problem and solve it?
I am in Indonesia and the local electricity company is bad and there is no actual electrician around. People just connect wires together.
So with this in mind I recently ripped out my wires (unearthed)...
- 598
0
votes
1
answer
135
views
Under what conditions is a subpanel to have a separate grounding rod?
Does a subpanel need a grounding rod when the subpanel is within the same structure as the main panel?
Does a subpanel need a grounding rod when it is in an outbuilding?
Are there any distance ...
- 1,028
8
votes
3
answers
3k
views
Does my house have a grounding problem?
I've been looking at how my house is grounded because I want to install an antenna outside for amateur radio. After poking around, I'm suspicious something isn't right. I think I'm probably going to ...
- 163
0
votes
1
answer
63
views
I found an old earth ground with #12 wire, should it be changed after a service upgrade?
About 10 years ago we had a new meter-main installed upgrading to 200A service from 100A at a new service entrance location (closer to the street) for a 1951 daylight ranch house. At the time they ...
- 1,215
2
votes
2
answers
3k
views
How do I ground an AC inverter in a RV?
I am working on installing a Victron Energy Phoenix Inverter 800VA into my little teardrop RV. I am doing something men just don't do, I read the Victron Energy Phoenix Inverter manual! Appendix A ...
- 209
2
votes
1
answer
3k
views
Grounding Rod Requirements (Canada, Ontario)?
Been reading up on grounding requirements in my region, but am rather confused about the 2015 code.
Rule 10-700 of the Canadian Electrical Code states that
Rod electrodes must consist of at least two ...
- 239
0
votes
1
answer
524
views
Can a 20' section of #4 rebar server as concrete-encased electrode ( UFER ) if it is not attached to the rest of the rebar matrix in an on-grade slab
Let's say we have 9'x25' monolithic concrete slab of 5" thickness with a 12" deep by 12" wide "haunch" footer around the perimeter. At 2-1/2" inches below the surface of ...
- 2,032
2
votes
1
answer
330
views
What is the appropriate fitting to connect an armored cable to this stand-alone receptacle product?
I have a pre-existing #6-3 armored cable (without a separate ground conductor), as shown here:
I am replacing the range this was connected to, and would like to provide a 4-wire connection via a 14-...
2
votes
2
answers
2k
views
Can I use the metal cladding of a cable as ground for this range installation?
I have a pre-existing #6-3 cable (without ground) with metal cladding on a 50-A two-pole circuit that was wired into a range. As shown in the photo, this cable has only black, red, and white ...
0
votes
1
answer
4k
views
Direct Burial Wire for 200 Amp Sub Panel from 200 Amp Main
I'm trying to get the right info to price out my project.
I plan to install a 200 amp sub-panel in a shed with a 125 to 150 amp feeder breaker. The shed is about 180 feet away from the main panel. The ...
- 5
3
votes
1
answer
327
views
Neutral-Ground bonding with generator (no utility power)
I've been doing plenty of searching around the internet, but cannot find anything for my specific scenario. Any help or advice would be greatly appreciated.
I would like to install a breaker panel at ...
- 31
0
votes
1
answer
833
views
Can I bond my ground to my gas pipes?
Do I have to install the grounding electrode all the way to the service section, or can I bond the gas pipe to building steel which is continuous through out bldg and then bond the steel to the ...
0
votes
3
answers
291
views
Grounded Neutral Voltage Fluctuatons
BACKGROUND: Hi this is in Chicago so we use EMT Conduit as our grounding system and only use an EGC for stoves/dryers/sump pump/ etc... so I was working with my cousin to demo stuff in a basement in a ...
0
votes
1
answer
276
views
Sharing a Ground Conductor Between Multiple Circuits
I'm thinking about running circuits for lights and an infrared heater to a patio. The heater is a 6000 W unit with two individually controlled tubes – I'm thinking this will start off in 12/2/2 NM-B ...
- 538
2
votes
2
answers
1k
views
Can I use an existing Ground Rod for Sub-Panel in Detached Garage (Meter box is using the rod currently)
Two buildings: Home and Detached Garage (circa '04 US). Service comes in through a Meter on the Garage to a PVC conduit into the Main box in the home (Single phase 240V with Neutral). In the main box ...
- 21
0
votes
0
answers
53
views
Momentary 'brown-out' when a motor kicks on
As a home owner, I have an ongoing issue which is that everytime any motor kicks on (refrigerator, AC condenser, sabre saw, etc.) the lights dim for a second or two. The main service is at the ...
1
vote
2
answers
727
views
Can I bond gas plumbing via gas water heater's electrical connection ground?
Locale: WA State, U.S.
Inspector approved gas plumbing and followed up later, saying:
"Please note that we will be verifying the bonding of the new gas piping at the next inspection, please ...
5
votes
2
answers
1k
views
Replacing subpanel that was fed with 3 wires
A contractor replaced my subpanel with a new one, and will come back for other work and inspection. (Old subpanel is Federal Pacific.) My home is in California, built in early 1980s. The subpanel is ...
- 263
0
votes
2
answers
1k
views
Grounding 3 wires to electrical box with 2 ground screws
I've installed a metal electrical box. There are 3 cables coming into the box. The standard box only has 2 ground screws. My inspector said I am supposed to have 1 single ground per screw...
So, how ...
- 503
1
vote
2
answers
204
views
Is the ground resistance meter indispensable when grounding your home?
I'm Brazilian and I need to ground my house, especially because of some expensive equipment I don't want to use without proper protection.
By "grounding my house" I mean: provide an alternative path ...
- 113
-1
votes
2
answers
1k
views
Intersystem bonding terminal - how direct?
Back before I knew what an intersystem bonding terminal (IBT) was properly called, I had my service entrance put in by an electrician, licensed in 3 states, who never-the-less pulled things I now know ...
- 226k
0
votes
1
answer
160
views
Ecuador grounding an ungrounded house
Hi so I’m an electrical engineer visiting some family in Ecuador and after some wiring has stopped working In the kitchen I have decided to rip out the 40 plus year old installation and reinstall. ...
1
vote
2
answers
3k
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 ...
- 175
4
votes
2
answers
514
views
Understanding ground to earth and neutral, trying to make my home safe
I've been reading for hours and still confused in regards to my situation. I'm trying to improve electrical safety in my house, especially with a growing family.
Any help would be great.
I'm in ...
- 41
1
vote
3
answers
565
views
Grounding TV Antenna and Metal Porch, And Resolving Ground Rod Issues
I'm mounting a light-weight metal TV antenna to a metal mast attached to old-school metal roof columns (with the curly-cues) on a small second floor porch which has a metal porch roof, and metal floor ...