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For questions dealing with grounding and bonding of electrical installations, and the specific requirements of such.

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My natural gas pipe (black iron) has never been bonded to my electrical system, but I am pretty sure that it is supposed to be. 2017 NEC 250.104(B)(1) says that this can be accomplished by connecting ...
Moshe Katz's user avatar
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I recently added a new main breaker panel outside my house, converting my previous main panel into a subpanel. My house was built in 1979 when having a ground only to the water pipes was sufficient. ...
Moshe Katz's user avatar
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I bought a property about five years ago, I'm trying to add some new circuits, and I can NOT understand what's going on here based on what I know of household electric wiring... My understanding is ...
balmerjd's user avatar
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1 answer
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I’m adding a subpanel in the (former) garage (attached). There was existing 6g SE H-H-N-G running there from the main panel. After install found one hot was at 111v and the other at 129v. 240v between ...
Keagan's user avatar
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Going to be installing proper grounding electrode system - two 8' copper-clad rods bonded with bronze acorn clamps to 6 gauge copper GEC to panel. Pre-existing GEC is just 8 gauge copper wire clamped ...
Armand's user avatar
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My house has a split-bus panel from 1979 (Square D box model QOB 30X200-3; interior model QON 26-614HA), providing 200 amp service. The panel is completely full. I want to install a separate main ...
Moshe Katz's user avatar
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I've just built an outdoor kitchen using metalframing and then sheathed that in cementboard and then covered it with metal siding, so its a bunch of metal covering more metal inside. There are several ...
Mike Merchant's user avatar
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3 votes
4 answers
361 views

I am setting up a workshop in my shed and want a source of electricity there. My initial plan was to have the shed isolated from the house and be completely solar powered with the help of power ...
n0rd's user avatar
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1 answer
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I have an old ITE load center that I am adding a new 50A breaker to for an EV charger. I will be wiring a NEMA 14-50 receptacle, rather than hardwiring the EVSE, so I will have a neutral wire. As you ...
Wedge's user avatar
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2 answers
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If I tap some threaded mounting holes in the back of my 1970's GE service panel for a new ground bar, my understanding is that I can move all of my grounds from the Neutral/Ground bus bar to this new ...
Jon Griffith's user avatar
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I opened up a soffit in my basement and found that the wires to the heat pump. I have four units. They are not in conduit and they have a staple around all four orange wires and they’re laying on a ...
angela stover's user avatar
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Common wisdom tells us that a grounded antenna is safer for the TV and other household equipment in the event of an electrical storm. I've read that grounding a rooftop antenna can lessen the chances ...
Jamesfo's user avatar
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I have 50 year old subpanel with EMT conduit being used as ground. Added some new 12/2 circuits via FMC into this subpanel - can I attach a ground bar to subpanel and connect the green ground wires ...
Konstantin's user avatar
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I live in Los Angeles, California. My pool shed recently burned down. It had two 20A 240 circuits for two 1.5 HP pool motors. One 20A 120 circuit for the spa blower and pump. One 20 A 120 circuit for ...
user389973's user avatar
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4 votes
2 answers
112 views

We have a new 200 amp service, with a new meter box and service disconnect on the exterior of the house. Directly behind the meter box is a new larger 40 spot sub-panel. We want to install a generator ...
BMC's user avatar
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1 vote
1 answer
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I have overhead service to a meter and main panel with a 200 amp main breaker. I have 3 subpanels. One is in a garage that also houses the deep well pump located 6 feet from the main panel. Another is ...
Timothy Ryan's user avatar
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5 votes
1 answer
298 views

looking for some clarity on sub-panel/EMT grounding. Been doing some research but not fully clear on some things. Going to feed a sub-panel/loadcenter from a 60A breaker installed in a 200A main panel ...
JBS's user avatar
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9 votes
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Using a multimeter, I checked the continuity of the aluminum sheathing against any of the conductor wires (black/white/green) and there is no continuity to any of them And then, when I wired the 3 ...
akosiempre's user avatar
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1 answer
209 views

I have a 1960s home located in Georgia with brick exterior where the outside electrical meter is located. My breaker panel is located close to the middle interior of the house on 2nd floor. I have ...
DIYNoob's user avatar
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This house was built in '65 with original wiring. There are no ground wires available to connect lights and exhaust fan for my bathroom. I added a yellow 12/2 cable for my vanity light with a ground ...
Sean B29's user avatar
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3 votes
2 answers
568 views

I have a 225Amp rated main breaker and panel box. The neutral and ground bus bars are bonded directly to the neutral main and are full, unfortunately. We want to add a 50A RV circuit to the panel, and ...
Ryan Mortensen's user avatar
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3 votes
2 answers
2k views

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 ...
negacao's user avatar
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1 vote
1 answer
228 views

I am having a barn built and plan to install 200A service, doing most of the work myself. My property is zoned agricultural, so I do not need an inspection by the County. Nonetheless, I intend to hire ...
An Ex Parrot's user avatar
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12 votes
2 answers
3k views

There's an outlet in the front hall of my house near Atlanta, GA. I noticed scorch marks on the face, so I decided to investigate it a bit. My outlet tester indicated an open ground. When I opened up ...
Kurt Tomlinson's user avatar
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2 votes
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215 views

Will this be all I need to ground a predator 5000 portable generator: a 5 /8" by 8' grounding rod and copper cable to generator terminal? The generator will be used when needed for residential ...
Paul McNamara's user avatar
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8 votes
3 answers
2k views

Looking at a friend's fridge that I discovered had a broken ground pin in its power plug Fridge chassis was causing painful shock when touching it. I measured 120V from fridge chassis to ground. I ...
jay613's user avatar
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3 votes
3 answers
725 views

We’ve replaced our furnace and a/c - which resulted in changes to the wiring from the furnace to the subpanel. The prior furnace was wired to a 240v subpanel with no neutral, which I assume was okay ...
RCC's user avatar
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2 votes
1 answer
134 views

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 ...
Help-ful-less's user avatar
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3 votes
1 answer
273 views

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 ...
Help-ful-less's user avatar
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2 votes
1 answer
378 views

I recently bought some house brand weatherproof boxes at my local big box store. I'm planning on mounting a lay in lug at the green grounding hole, so bought some longer #10-32 screws to accommodate ...
Armand's user avatar
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1 vote
0 answers
122 views

I'm running a 6 ga stranded copper THHN ground wire about 70 feet total outdoors in dedicated 1/2" LFNC to retrofit equipment ground (EGC) to old ungrounded outlets in the back side of my house. ...
Armand's user avatar
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3 votes
1 answer
226 views

I'm installing a sub panel the main is at the pole I have a galvanized well casing over 6' away from the first ground rod can I use the well as my second
Johnny Bravo's user avatar
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2 votes
1 answer
250 views

I've installed an emergency/service disconnect outside of my house. I'm bonding my grounds and neutrals in this enclosure. I have the following grounding and bonding conductors coming into the ...
Christian K's user avatar
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2 votes
2 answers
145 views

At my property the power company installed the meter with a box below it with a 200 AMP breaker. There are lugs inside to attach wires directly to the bar so they feed directly from that breaker. So....
Jason Kilby's user avatar
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12 votes
3 answers
3k views

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 ...
KJ7LNW's user avatar
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1 vote
2 answers
567 views

I'm replacing my main load center, with this unit, Siemens PN4264B1225C: Note that the neutral bars extend only about halfway down the columns of breakers. This seems a bit inconvenient, especially ...
RustyShackleford's user avatar
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0 votes
1 answer
90 views

Burbank, CA I added a 125 A subpanel to my detached garage (2/0 feeders), and ran copper ground between it and the main panel. I’m now installing a pair of grounding electrodes for the subpanel, and ...
Rick's user avatar
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2 votes
1 answer
303 views

I am reading about the EV charging at J1772, where a connector image is displayed. The connector has a PE terminal. I read that the Protective Earth is connected to a earth rod on the charging station ...
Novice's user avatar
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2 votes
0 answers
206 views

I purchased a property with a 200 amp outdoor main service panel below the power company's meter. I want to use this to run power supply to my mobile home about 30 feet away. I also want to supply a ...
Wanell Drake's user avatar
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12 votes
2 answers
2k views

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
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1 vote
0 answers
178 views

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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2 votes
2 answers
934 views

I'm planning to add a disconnect on the outside of my house between a meter pan and my 100A main panel (inside). This is a follow up question to an earlier question. After I've added the disconnect I ...
Christian K's user avatar
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1 vote
1 answer
125 views

I am planning to install an antenna on the gable at one end of a house. The electrical service panel is on the other end of the house, about 100 ft away. I plan to install an earth ground outside ...
D.Mac's user avatar
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2 votes
0 answers
89 views

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
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0 votes
1 answer
93 views

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
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2 votes
2 answers
156 views

I will spend some weeks completely off-grid with a AC inverter generator, a battery charger, a 12V battery and a small inverter. Why a generator and an the inverter? because I'll use the generator ...
jmann's user avatar
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2 votes
2 answers
218 views

I have a 50A RV with a custom solar setup using a Victron 12v Multiplus II 2x120v inverter. In normal operation I run shore power through an EMS and the into the Multiplus, then from the Multiplus ...
Solar_Samuel's user avatar
  • 21
0 votes
1 answer
93 views

I've seen diagrams on reputable electrical journals showing two grounding rods driven 8' into the ground with approximately 8' distance between then, the two rods connected by a length of 6GA copper ...
mr blint's user avatar
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1 vote
2 answers
236 views

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
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2 votes
2 answers
2k views

I think my head is going to explode trying to figure this out. Trying to go through and ensure the safety of my house's electrical system. It is a bit of a mess. Currently working on grounding and ...
alexok16600's user avatar
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