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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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3answers
168 views

Bridging Neutral and ground in a Light Switch

I changed my bathroom light switch for a Occupancy Sensor Switch but it would not turn off. Since the package said Ground Wire Required I figured it was a ground issue. The location has wiring from ...
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2answers
81 views

Would connecting an ungrounded cable to a new grounded cable in a box violate code?

A wire in my garage got damaged. Breaker is off now. The wire feeds the stove on the other side of a split level home. It is an old cloth covered wire, with no ground. Red, white, and black wires only....
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2answers
107 views

Grounding a switch that has no ground screw or wire

I have a timer switch (see photo 1) that has No Grounding Screw and ** No Grounding Wire** protruding from it. It is to be installed into a plastic gang box and replace a switch which is currently ...
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1answer
166 views

Adding Ground Wire to Existing NEMA 10-30 socket

I have a question about changing my 10-30 wall outlet to 14-30 for charging my EV. I thought it was a simple trip to Home Depot but it seems I may be not code compliant. I bought a Level 2, 20 amp ...
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2answers
197 views

Can I strip a neutral wire and use it to pigtail ground wires?

I need to ground outlets in my house and need to pigtail the ground wires. Just wondering if I can salvage the old neutral wires, strip them, and use them to pigtail to the outlet instead of cutting ...
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2answers
161 views

EMT Grounding requirements

I'am running 2" EMT from an outside enclosure through the exterior wall into a switch room that is being attached with beam clamps, The EMT is carrying a Fiber optic cable feed to the switch room that ...
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6answers
907 views

Why is the neutral tied to ground in my home's electrical panel? [duplicate]

What keeps the Electric from shorting to ground? On my electric panel the Neutral is tied to the ground. The ground is a bare copper wire run back to my water main. a. Electricity chooses the path ...
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3answers
274 views

Why won't my furnace complete the startup sequence when powered by a portable generator?

We recently had a power outage that lasted several days and the house was down to 41 degrees and expected power restore was several days in the future. I purchased a 3500 watt (5250 starting watts) ...
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2answers
131 views

Does a non grounded GFCI meet code?

Background So I live in Michigan (which of course affects code) and I have a bunch of two prong outlets in a house that I own. If I want to convert these to be 3 prong outlets is it still up to code ...
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1answer
38 views

Dangers of connecting Neutral to case of blower?

(Not an Electrician) I have a 220V air handler (not part of the HVAC system its for a homemade wind tunnel) that I need to get power to. There is an old dryer receptacle (10-30R) in the basement that ...
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3answers
126 views

Confusion while diagnosing an open ground

I have an outlet tester and it says the outlet in my bathroom has an open ground and I'm trying to see if I can fix this by replacing the receptacle or if the problem is elsewhere. With a voltage ...
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0answers
60 views

Ground rod driver for very large ground rods?

I have a large Jack/Demolition hammer I use this to pound very large ground rods/stakes into the soil. These rods are those over 1” in diameter. The largest rod driver I can find will fit 1” ...
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1answer
326 views

Does the UFER Ground require to be visible?

Is there something on the NEC code that states the UFER ground needs to be permanently visible? I had my rough in electrical inspection the other day. He stated that per NEC 250.64(E) (1), I have to ...
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2answers
73 views

Dryer connection changes from 10-3 with ground to 10-3 without ground

The previous homeowner did some electrical work to upgrade the dryer outlet to a 4-prong receptacle along with new 10-3 wiring. It was all brand new and looked copacetic. I'm thinking of moving the ...
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1answer
251 views

Grounding Wire to copper pipe for cable

I'm working on renovating my basement, but first am replacing all of my existing copper pipes with modern CPVC to eliminate the constant leak headache since we are on a well. Last night I found this ...
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3answers
74 views

What tests can I perform to figure out if a wire is my Grounding Electrode Conductor?

As part of some investigation into the systems of the house I live in, I was looking at the grounding and bonding wiring for the house, as most of it is accessible from the basement utility room. In ...
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1answer
31 views

How to add grounded junction boxes when installing recessed lighting?

I'm interested in adding recessed lighting in my basement where there are only two flush mount fluorescent fixtures, so I'd be adding 8 or 10 additional fixtures. My home has no dedicated ground wire, ...
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2answers
315 views

If my heat pump does not have a neutral, do I still need a neutral wire?

I had a friend wire 10-3 line for a new heat pump. He connected the red and black conductor wires in the house to the 2-pole 60 amp breaker and the neutral white to the neutral bus bar. The outdoor ...
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2answers
57 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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0answers
28 views

sub panel ground

I have a detached garage with a sub panel. upon inspection I do not see a ground from the main panel and all of the grounds and neutrals in the sub are connected to the same block. I am replacing the ...
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1answer
55 views

How to add grounds to a 120 amp panel and grounds electrical outlets

I'm buying an older home. The inspection showed no ground on the panel and no ground on some outlets. I'm assuming the outlets are near water, sinks, etc, that need the reset protection. I currently ...
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0answers
46 views

Will improved panel grounding resolve AM radio static?

I live in a manufactured house. I have two electrical panels--one outside on the electrical pole where the electrical meter is at and another one in a utility room in the house. The one on the pole ...
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2answers
506 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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2answers
98 views

Does the ground wire for my pool connect to the pumps?

I am in the midst of a new gunite in-ground pool install. I have the electrical background to tackle this job but I want to know I have it right, particularly around the bonding and grounding. I got ...
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1answer
112 views

Is it possible to charge a battery from a live with without creating a second ground? [closed]

This came about out of a conversation with a friend and we were wondering if it was theoretically possible to power a device with a hot wire and have that device's neutral/ground be attached back to ...
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1answer
76 views

Is my ground correct at my subpanel?

I have a subpanel at my garage. It has 2 hots, one neutral and one ground from the service panel. The neutral and ground in the subpanel are not bonded. All the outlets including GFCIs all work ...
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1answer
49 views

Intersystem grounding bus ran out of terminals; now what?

My intersystem grounding terminal bus is out of available terminals, and I have two additional communication wires to ground to it. Does NEC allow supplementary bus bars? NEC 250.94 seems to imply no, ...
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1answer
107 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
307 views

Does a sub-panel in an outbuilding require a ground wire or rod? [duplicate]

My main elect panel in the house has a common neutral/ground bar and not separate bars. If I run from this panel to a sub panel in a detached pole barn and attach the two hots for 240V and one ...
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1answer
50 views

Does a ground need to be install in a 2' x 4' outside junction box?

i have a bunch of outdoors 2' x 4' open bottom concrete junction boxes. the question is, does each box need to have a ground rod installed and bonded to the ground wire? if so can someone please point ...
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0answers
45 views

Not properly grounded/earthed

I know next to nothing about electricity and wanted to ask for some advice. Apologies for any cross-posting. I moved into a rented house in Spain a few months ago. Turned out it wasn't grounded. ...
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1answer
278 views

Trying to install Kasa smart switch but having trouble with ground wire

I started to install my KASA smart switch but when I opened the unit I wasn't able to find a ground wire. I currently have two black wires (one stabbed into the switch and the other is wrapped around ...
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3answers
313 views

help me interpret the results of an outlet tester on some GFCI receptacles

I'm trying to figure out what might be wrong with some exterior GFCI receptacles that I have. The problem is that this is an old house, and I'm not really sure what is happening between the ...
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1answer
55 views

Are speaker wire output negative posts on receiver common-grounded? [closed]

I am buying a subwoofer (powered Sunfire HRS 12) that has high level inputs (bare speaker wire) and it says that it has it's negative posts joined (common-grounded) and that my receiver or amp also ...
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2answers
79 views

Do I need to install a local ground point for a secondary consumer unit in my shed?

I've just installed outdoor sockets on the side of my brick shed, where previously we just had a double socket inside the shed itself. The original socket in the shed is on a spur from the ring main ...
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1answer
2k views

What is the difference between a coaxial grounding block, an antenna discharge unit, and lightning arrestor

I've been reading about grounding outdoor TV antennas but these terms seem to be used interchangeably by various articles on the internet. For example, this article seems to make a distinction ...
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2answers
177 views

Grounding Rod for Residential application

I currently live in Florida, where the soil is basically sand and clay. My question is: how should my grounding rod for my house be installed? I've managed to dig up the grounding rod that was ...
2
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1answer
109 views

Grounding to the box and 3 Prong Receptacles

Recently bought a flip house. The flippers replaced every two prong receptacle with a three prong and a bootleg ground. In the process of undoing that unsafe practice, I've discovered that almost all ...
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3answers
380 views

How to mark an outlet as ungrounded

I'll be replacing my ungrounded three-prong outlets with tamper-proof GFCI outlets in my home in the USA. Maybe I'm overthinking this, but is there a way to 'universally' mark the outlets as ...
2
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2answers
1k views

Adding a ground wire to old 2 wire wiring before extending to grounded wiring.

I am remodeling a house and the partially unfinished attic has old ungrounded, 2 wire wiring. There are 2 circuits. There is a finished bedroom with one circuit on 3 walls, and a second on the 4th ...
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2answers
2k views

200amps service - ground rods instead of pipe connection

I upgraded my main circuit breaker today from 150amps to 200amps. See my previous posts here on the same project: Is RC2040M150CH MSP upgradable to 200amps main circuit breaker Neutral on main ...
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2answers
558 views

How can I connect a new ground rod?

Illinois house, built 1963. Not sure if there is a ground rod or just the water pipes used for ground. Want to put in another/first rod. Can I connect it to the clamp on the electrical meter housing ...
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5answers
2k views

Why are ground wires required to be so large if a short results in an immediate breaker trip?

The purpose of ground wire is just to carry current in milliseconds enough to trip the circuit breaker, it won't even get hot. So what is wrong with using very small ground wire? For example. You are ...
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2answers
164 views

Would my grounding conductor be “choked” out by metallic conduit?

I’m in Hawaii. The G.C./engineers have told previous electricians that they want the bare ground coming up through slabs to building steel to be in a short piece of rigid conduit for protection of the ...
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2answers
798 views

In 2/3/4 gang box, should you combine all grounds using crimp connectors?

When I have multiple lines going in/out of a 1 gang box (with an outlet/receptacle or switch), I typically combine all the grounds into a single wire using crimp connectors: However, when working ...
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2answers
207 views

What is an open ground and why would the neutral wire measure 50v?

What is an open ground? Also, why would there be 50 V in the neutral and ground wires? I have replaced all outlets and switches and still I have no light.
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2answers
74 views

GFCI Grounding Issue

I'm trying to replace a two prong outlet in my garage with a GFCI. The receptacle line is fed from a light switch on the wall, and the load runs to an outdoor(one bulb) lamp post. The general ...
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1answer
2k views

Main Panel with separated neutral and ground

A customer of mine had a friend wire his basement. He did a neat job, but when I opened up the mailnpanel to add a circuit, I noticed he had installed ground bars and separated them from the neutral ...
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2answers
226 views

Off Grid PV System Grounding Question

Hi I am installing an off grid solar system form my orchard and shed. Basically there are some pumps, lightning and some household appliances like refrigerator etc. I have read many articles about ...
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1answer
49 views

how to replace surface conduit for a two-wire lighting circuit?

I have an old house with unswitched knob-and-tube running to a ceiling fixture. Previous owners ran surface conduit to a wall switch and to a second light fixture over the sink; none of this was ...