Questions tagged [grounding]

Grounding, also earthing, refers to the practice of providing a direct conductive path to the physical ground for an electric short to a chassis. Tag questions involving the installation or retrofitting of grounding with this.

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82 views

Oven has 2-prong plug plus earth wire. Socket is modern 3-prong. How to connect?

My 110V toaster oven has a 2-prong cable. Also, the oven's chassis has a screw with a connected green/yellow earth wire, which I want to ground. My wall socket is a modern 3-prong with earth and all. ...
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1answer
62 views

Grounding for Outdoor Outlet

I have an outdoor outlet about 60' from my house. It is properly wired using an underground cable with ground. It is in a plastic box with plastic conduit protecting the stub-up. Recently a tree ...
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1answer
80 views

Connect two grounding rods

I added an exterior TV antenna and a grounding rod next to it with a 6 gauge copper wire going to both the antenna mast and the ground on the coax coming from the antenna. It is about 15 feet from ...
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6answers
37k views

Grounding requirements for main panel and subpanel

I recently had my main service professionally upgraded to 200A and had a 60A subpanel installed in my master suite to support future additions. All work passed city inspection, for whatever that's ...
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2answers
80 views

My outlets have ground wires twisted together and bonded to the metal box, but not the outlet. Is this ok?

In my home, I've been replacing the outlets. The old ones are so loose that things don't stay plugged in! While doing this, I noticed that the ground wire(s) in every outlet are twisted together and ...
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3answers
37 views

Grounding Requirements for same structure subpanel

I understand that unless a 250.32(B) (NEC 2014) applies, a separate ground wire should run from the main to a subpanel where the service is in a separate structure. Still confused however about NEC ...
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1answer
65 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 ...
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2answers
2k views

How would I ground an internal ethernet surge protector?

I have a Cat-6 cable running to an external PoE security camera that I'd like to have surge protected, but I'm unsure how to ground the protector. It has a prong coming off that I assume is the ground ...
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3answers
99 views

Can you attach more than one wire in a given hole on a bus in an electrical panel?

Is it permissible to attach more than one neutral or ground wire to any terminal screw on the service panel bus? A home inspector says this is not allowed. THAT DOESN'T SEEM RIGHT, because all of ...
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2answers
81 views

A shorted to ground compressor can't be a pre-existing condition can it?

Our home warranty company is trying to deny our a/c claim because the technician they sent said, our compressor was 'shorted to ground.' They say that this was a pre-existing condition and that ...
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1answer
52 views

Can I use the grounding rods of a main panel as the grounding rods for my sub panel

I ran 3 #6 B/R/W and 1 #8 Grn from my main panel through 1" sch 40 PVC to my garage and will be installing a 100A sub panel with separate ground and neutral blocks. I understand that since it is a ...
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1answer
103 views

Can I use the same junction box for two appliances?

Complete noob here. I'm finishing building my kitchen and the last part - the wiring of electrical oven and glass cooking plates, is presenting me with some challenges. I am located in Germany. ...
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1answer
463 views

Strange outlet behavior

I am going to be updating electrical outlets in my house, so today I checked them all with the 3 lamp tester. Only a few are properly grounded and others not. One outlet is showing strange behavior. ...
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1answer
223 views

Why is neutral wired to ground at this switch?

I was looking to add an outlet near my light switch in the garage. When I opened the box for the switch I noticed that the neutral is wired to the ground. In the picture of the switch, the top wire ...
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1answer
1k views

Japan: Can I ground a dishwasher by connecting it to a sink?

This is a question about electrical safety in Japan. I know this isn’t a Japanese forum, but my Japanese isn’t up to much, and everyone I can ask either knows nothing about electrical safety or ...
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5k views

Why don't I have ground wiring on any of my outlets?

My house in California was built in 1989 (I believe) And in the last 5 years I've replaced at least 20 outlets myself (successfully), and noticed there were never any ground wires to connect to the ...
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1answer
97 views

Can I connect the ground wire for my dryer to a different hole in the chassis?

I am installing a new GE electric dryer (model GTD42EASJ2WW) and attempting to connect the 4-wire cord. The last step is to connect the green ground wire with a supplied ground screw. The hole that ...
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60 views

Electric Shock in Walls and Electrical Equipment

I'm getting a shock when I touch walls, electrical equipment like a water cooler, fridge, etc in my home. I have followed this procedure as I only have a DMM with me. The readings I got after ...
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4answers
33k views

Is it okay to connect 2 ground wires to a single ground screw?

I have 2 ground wires that I can get around the ground screw on an outlet. Is it okay to do this or do I need to use a pigtail to join the wires and have only one wire attach to the ground screw?
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1answer
64 views

What should happen with plumbing ground connections when converting to Pex?

My house is being re-piped by replacing all of the copper with PEX starting at the water service entrance. I'm on a well which is 150' from the house and the service line is CPVC. Currently, there is ...
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1answer
34 views

Grounded outlet with load for ungrounded outlet

Moved into a place, nearly every outlet is ungrounded with the exception of a couple GFCI in the kitchen and bath. Needed three prong for the fridge (and really didn't want the new appliance ...
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1answer
32 views

grounding wire extension

I have an above ground pool which was grounded for safety. I had to buy a new pump (motor) and unfortunately the ground wire was too short to reach the pump. I had to move the filter and pump to reach ...
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1answer
92 views

Grounding a 3-wire sub-panel in attic

Early 1960's home. 200-amp main service panel on first floor. 3-wire (L-L-N) feeder to 100-amp sub-panel in the second floor attic, about 25-30 feet from the main service panel. Neutral and ground ...
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1answer
1k views

What should I do with the ground wire on a replacement bathroom fan motor?

I bought a new motor for my bathroom vent fan and it came with a ground wire. The old motor does not have a ground wire, or not that I can see. What should I do with the ground wire?
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4answers
6k views

Dimmer switch not connected to ground

I know just the basics of electricity and am trying to replace an older dimmer switch that broke with a new very similar switch. The old switch is not connected to ground. The new switch has the ...
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0answers
67 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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2answers
16k views

Is it ok to use a ground rod at a subpanel instead of a fourth wire?

I understand running the neutral wire back to the main service panel and not bonding the subpanel... but running the equipment ground back to the main panel seems to get conflicting answers. If ...
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0answers
50 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 ...
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2answers
64 views

Can I ground a ceiling fan to another electrical ceiling box nearby?

I want to install a ceiling fan where a ceiling light currently exists in my garage. The box for the current light has only two wires coming in however: a black & a white (no ground - looks like ...
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2answers
407 views

Replacing bathroom exhaust fan without ground

I'm replacing a bathroom exhaust fan. The previous fan is probably about 30 years old and was not grounded. In fact, the wiring in the bathroom does not have ground. The fan will be mounted to a steel ...
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0answers
37 views

I have a ground rod but I have no grounds in the house

My panel is connected to the main water intake jumping the meter and I just installed an 8 foot copper ground rod. Even connecting a new breaker with only one outlet attached to it shows that I have ...
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1answer
56 views

60 amp sub panel, 100 ft away from main panel. Grounding rod or not?

Adding a 60amp sub panel (4breakers) on the 2nd floor for a dehumidification system and some misc. Running 100 feet of 6/3 wire. I am assuming that I can use the ground wire in the 6/3 from that ...
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1answer
105 views

Should I connect the ground wire to the panel when the conduit is grounded?

I ran 10/3 BX cable to my attached garage for an outlet. The BX has its own green wire for grounding, but since my home is grounded all through the conduit/outlet boxes and is bonded to the neutral in ...
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35 views

Is it legal to add a ground wire to a dryer circuit? [duplicate]

It would be much easier to put a ground in outside the dryer outlet than doing a homerun to the electrical panel assuming you pull both the existing wiring and the ground to the same surface mount 30A ...
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2answers
56 views

Shared ground for 3 circuits

My septic system requires 3 circuits. A 10Amp & 2 20Amps. Using schedule 40 conduit in a 80ft run underground to the 3 pole emergency service disconnect. Can these three circuits share a ground? ...
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1answer
676 views

Neutral wire is tied to my electric metal box, why is it so?

I have this old Depard switch box in my patio. Originally, I wanted to 'add' a receptacle in my old Despard switch 'array' stack. Now I am puzzled and afraid of doing that because I found out that ...
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1answer
62 views

Electrical Bonding for an exterior building

I have to upgrade the service I have for an exterior building. The wiring follows the old code, and I'll need a permit to do it. So I am going to have to update the service and everything to the ...
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3answers
10k views

How can I add a grounding conductor to my early 20th century electrical system?

I live in a old house (built in 1918), and because their was no electricity back then, all electricity was added after, and weird enough, nothing has a ground. So, I'm having problem with my washing ...
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3answers
280 views

How do I ground a new outlet that only has the black/white wires?

I am adding a new outlet but want to make sure it is correctly grounded. I have outlet A that I am going to be creating a new outlet B. I tested A and it says it is grounded and want to ground ...
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1answer
197 views

Electrical outlet installed by previous owner had Black and Green wires wired together

I've replaced dozens of outlets in my life without incident. This time, when I pulled the outlet away from the box, I found something odd. The white (neutral) wire was as it should be. But, you know ...
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0answers
48 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 (...
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1answer
44 views

How do I connect the ground wires to the new light fixture?

Took out old fluorescent fixture and putting in new LED one. There are 2 switches for this fixture. Not sure what’s going on with the 3 ground wires. I’m not an electrician so dumb it down please.😊
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1answer
7k views

Is earthing required for a submersible water pump?

I have a submersible water pump with a power cable that ends with a three-pronged plug with a protective neutral contact. Having a matching outlet is problematic - there are only unearthed outlets at ...
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0answers
62 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 ...
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2answers
87k views

How do I know what size grounding conductor is required?

Is there an international standard that specifies the size of the grounding conductor to bond a metallic part of the installation to a grounding bar?. And to connect the grounding bar to the ...
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2answers
95 views

Grounding subpanel

I have a simple question, that I believe I already know the answer to, but just need confirmation before moving on. I had an electrician install a 100 amp subpanel installed on a newly built ...
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1answer
56 views

Grounding a subpanel using existing wiring

I had a 60 amp breaker that was connected to an oven in the kitchen. Since this is no longer needed, I'm trying to re-purpose this #6 wire to connect to a new Electric water heater I'm putting in the ...
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1answer
60 views

What type and gauge ground wire do I need when using 1/0 hot and neutral wires

I have a 260 ft run from my main 225A panel to a 100A subpanel in a steel shop out in my yard. I have a #4 bare copper wire grounded to the rebar in the foundation of the shop. Not knowing what I ...
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5answers
5k views

How should I connect to a short ground wire in a metal box?

I live in a 50's era house that has breakers and a ground wire in every metal box of the house. The problem is they only used 2 prong outlets. They cut the ground wire short and wrapped it around the ...
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3answers
2k views

Safe way to remove paint from ground wire?

I'm addressing an item on our house's inspection report where a GFCI outlet had been ungrounded. I turned off power at the breaker box, popped the outlet cover off and found the ground wire neatly ...