Linked Questions

0 votes
2 answers
4k views

Can a single ground wire ground 2 outlets? [duplicate]

Can a single ground wire ground 2 outlets? I don't want to run another wire through the wall, if I can run a wire to that other ground wire (and have 2 outlets being grounded by one wire). In other ...
Oliver Maki's user avatar
2 votes
1 answer
1k views

Integrating into knob-and-tube wiring: okay to borrow a ground [duplicate]

I have a mixture of knob-and-tube and NM-B. If I'm extending from knob and tube, but I have a (different) an NM-B circuit nearby, is it technically allowable to ground via ground wire in the other ...
ThePopMachine's user avatar
1 vote
0 answers
134 views

Shared ground between two different circuits? [duplicate]

I have a 240 circuit that i am trying to split into 2 120 circuits. I have only 3 wires available, red/white/black. I have another circuit a few inches away (both in junction boxes), Can I share ...
MRD Colorado's user avatar
32 votes
5 answers
496k views

Is it ok to have mixed grounds and neutrals on bars in a breaker box?

So to continue my line of electrical questioning (and perhaps narrow down my flickering light problem), I took a look through the two panels in this house. There is a 200amp main service in the ...
MarkD's user avatar
  • 5,125
22 votes
4 answers
10k views

Is it OK to create a third prong ground from a cold water pipe, for a 2-wire circuit?

When or is it NEC code compliant to upgrade a 2-wire circuit, by adding a third prong equipment ground from a nearby cold water pipe? A different case of borrowing a ground from a nearby circuit is ...
Bryce's user avatar
  • 10.9k
9 votes
5 answers
3k views

Can I replace my ungrounded / two prong outlets, or should I have a professional do this type of a thing?

They're all two prong except a select few in the kitchen. Is this a project I could take on with NO electrical experience other than minor soldering, or is this something I should not attempt? ...
Matt's user avatar
  • 385
6 votes
4 answers
10k views

Can I run a ground wire of a single circuit to the panel outside the house?

This is a follow-up to this question. I am adding (outlets) on to a 2-wire 12AWG (no ground) circuit and I want the new outlets grounded. Can I run a ground wire to the panel along the outside of ...
Paul's user avatar
  • 2,370
10 votes
3 answers
24k views

What to do with an apartment with only 2-pronged outlets

I just rented an apartment (Colorado, for what it's worth RE code) that has 2-pronged outlets throughout the place except for two GFCI's, one in the bathroom and one in the kitchen. I bought the $....
Alex Mcp's user avatar
  • 211
6 votes
2 answers
2k views

Can this 1930s box support a ceiling fan?

I live in a house that was built in 1932. I assume the ceiling fixture boxes are original to the house. It looks like the box is secured to the joist, and it has a brace running between two joists. ...
Kyle R's user avatar
  • 161
9 votes
4 answers
4k views

How should ground wires be handled when updating switch loops in an older home?

I have a house built in the 1950’s with fabric covered NMC wiring still present in most circuits. Those original wires are all 12/2 with no ground. I am currently in the process of replacing some of ...
Justin Randall's user avatar
3 votes
4 answers
11k views

Looking for or adding a ground to an existing NEMA 10-30 socket

I have an unused older 3-wire dryer socket (NEMA 10-30R) in my garage, I would like to upgrade this to a NEMA 14-30 socket with an separate ground. I'll be using this for an EVSE unit for electrical ...
kbyrd's user avatar
  • 349
5 votes
2 answers
3k views

Shared ground on bathroom light, fan, heater combo

I plan on replacing the exhaust fan in my bathroom and want to replace it with a light/heater/fan combo. In doing so, I want to be able to power both the vanity light and the fan light with a single ...
ander2ed's user avatar
  • 153
4 votes
1 answer
12k views

DIY solution for open ground wiring where electronics need to be plugged in?

Although many of the original two-prong outlets in a rental property (built around 1958) have been replaced with three-prong ones almost none of them are actually grounded (the couple that are ...
Jessica Brown's user avatar
6 votes
1 answer
5k views

Can I obtain grounding from a different outlet?

I have a room with 2 ungrounded (2-prong) outlets and 1 switched grounded (3-prong) outlet. This has not been a serious inconvenience so far, as most of the equipment I wish to connect has ungrounded ...
Kevin Reid's user avatar
  • 4,044
1 vote
2 answers
2k views

Best practices for a shared ground in conduit between branch circuits in residential?

According to NEC 2014 250.130 : Article 250 - Grounding and Bonding VII. Methods of Equipment Grounding 250.130 Equipment Grounding Conductor Connections. Equipment grounding conductor connections at ...
Vigrond's user avatar
  • 255
2 votes
1 answer
794 views

"Lending" the ground wire of a 120V/15A circuit to a 240V/30A circuit

I have read in a previous forum post Is it OK to borrow a ground wire from a different circuit? that NEC in article 250.130(C)(4) allows the grounding of an ungrounded circuit by connecting to an ...
MarcoD's user avatar
  • 435
2 votes
1 answer
1k views

Is my plan to add a neutral wire to a switch box ok?

I'd like to add a neutral wire to an old switch box so that I can install a smart switch that needs a neutral wire. I have a mud room and porch that each have a light fixture. The lights are ...
Michael K's user avatar
2 votes
2 answers
343 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 ...
scott's user avatar
  • 123
1 vote
3 answers
1k views

Is it acceptable to use a ground wire from one outlet to ground another?

I live in a condo/apt. Two of my three prong electrical outlets were not showing up grounded when I plugged my surge protector in. I think from lightning or something. I need to plug computers and an ...
Bruce Smith's user avatar
0 votes
1 answer
400 views

mesh with an older circuit

When extending an existing electrical circuit in an older home (comprised of 2 wire service (common and hot with no bare wire ground)) should one use 2 wire with a bare wire ground for the extended ...
Fred Loveland's user avatar
1 vote
1 answer
186 views

Why must all outlets share a ground conduit?

I was reading this answer in my quest to see how possible adding grounds to my existing knob and tube house would be, and was suprised by: Are you asking if it's OK to run a separate ground wire ...
xhainingx's user avatar
  • 175
0 votes
2 answers
596 views

Electric ground from another circuit

I have a circuit that has a couple outlets and they used 2 wire no grounds. Can I replaced the wire with 3 wire for the outlets and add new 3 prong outlets. It is a long difficut way back to my panel ...
robert block's user avatar
0 votes
1 answer
305 views

Electrical outlet wiring question

How serious a problem is it for an outlet's ground wire to be extended from an outlet that is part of a different circuit than the circuit providing the power and neutral wires? I have an old ...
nycneutral's user avatar
3 votes
2 answers
251 views

If i use one ground wire for two outlets, will my equipment get damaged?

If i use one ground wire for two outlets, will my equipment get damaged? Here is what I want to do: If my air conditioner sends voltage through the ground wire shared with the outlet powering my ...
Oliver Maki's user avatar