All Questions
86 questions
2
votes
1
answer
407
views
Does Sub panel need ground rod?
Have a Outside Main Box that's Full. Want to add Outside Sub-Panel right next to it 12 inches to the right. I know the Sub-Panel uses separate Neutral Bar and Ground Bar. But, Does the Sub-Panel need ...
0
votes
2
answers
88
views
Will my panel inside be considered a subpanel, and now be un bonded
I have installed a 200 amp distribution panel w/socket head. Will this be considered my main panel, and my panel inside now becomes my subpanel?
Should my subpanel be unbonded, and 2 lines, 1 neutral, ...
1
vote
3
answers
134
views
No Ground wiring seen in Main Lug
So I just found out that the Federal Pacific Stab-Lok main lug in my apt has got to go. After opening the cover, I was surprised to see no ground wires at all in there. There is only a neutral bar. ...
- 41
1
vote
1
answer
109
views
Grounding a dryer to a subpanel
Related to Grounding a 3-prong dryer plug, but with a small twist.
I have a NEMA 10-30 that runs back to my main panel. Since we had a leak in the laundry room, I'm having to open the wall. I'd like ...
- 26.3k
0
votes
1
answer
79
views
Can a subpanel ground originate from a separate circuit/conduit?
I have a 30amp pool subpanel wired with 10awg THHN through 3/4" schedule 40 PVC conduit. I'm considering installing a heat pump pool heater which will require a beefier subpanel.
Can I run 2x ...
- 212
0
votes
1
answer
194
views
What size wire, breaker, and panel do I need for my shed?
My shed is approximately 200ft from my main inside breaker panel in my house. Shed size is 20x20.
I want good lighting, approximately 8-10 120V plugs, and one 240V plug.
What size wire, size of inside ...
- 13
2
votes
1
answer
208
views
Can I use a 6AWG ground wire for a 100A feeder that has a section SER 1-1-1-3 and a section THHN?
I'm running a feeder to a 100A sub-panel. The total run is about 90 feet. 60 feet is in an attic, and I'm planning to use Aluminum SER 1-1-1-3, the other 30 feet is through a 1.5" PVC conduit on ...
- 707
1
vote
0
answers
110
views
Does a subpanel at boat lift need grounding rods?
I have a boat lift that is wired with 8/3+insulated ground (240v). I want to add a subpanel at the lift to install a 120 outlet and future overhead lights. Initially, I will have a GFCI 240 breaker ...
- 11
0
votes
1
answer
1k
views
Running power to detached garage
The time has come for me to run power to my detached garage. A little bit of background - I am well versed in all aspects of home improvement, am fairly comfortable and have done my fair share of ...
- 247
3
votes
1
answer
338
views
Should I oversize conduit and grounding wire size?
I'm getting ready to place my materials order and have a few last details/checks I could use help with. This is for installing a subpanel in a detached pump house. I'm putting a 60 amp two-pole ...
- 121
0
votes
2
answers
265
views
Ground bus for sub panel?
I am replacing an old fuse box in our (detached) garage with a modern breaker panel. What I've discovered is that the breaker boxes I can get from Home Depot have a neutral bus in them, but no ground ...
- 123
2
votes
2
answers
474
views
Can I wire smart switch to two panels?
I've seen some similar questions but not my exact situation (forgive me if I missed it).
I am wanting to replace a switch that controls the light in my swimming pool with a smart switch.
Background...
...
- 23
2
votes
1
answer
45
views
Separate structure subpanel electrode grounding - Rod count and separation requirements
Having a subpanel replaced in garage (60 amp). No prior electrode grounding exists, which needs to be added. Most information I've come across cites use of 2 electrodes, minimally spaced 6 feet apart ...
- 21
0
votes
2
answers
61
views
Subpanel grounding add ground
I have a 100 amp subpanel and is fed with a #2-3 AWG so i have no grounding just a neutral. Instead of replacing the wire because it is still good, can i just run a seperate ground wire #8 from the ...
- 1
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
3
votes
1
answer
619
views
Separating Ground and Neutrals in Mainpanel before installing sub panel
I'm planning to get a 100 amp sub panel installed in my garage but got conflicting opinions on a point from different master electricians. The point is one electrician is saying it's a must to ...
- 133
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
1
vote
2
answers
761
views
Grounding conversion for 200 amp sub panel
My direct bury feed is a little over 200 feet. I used 4/0 4/0 4/0 4/0 wire. I understand I need to isolate the ground from the neutral. This requires a grounding bar addition to my 200 amp QO sub/...
- 11
1
vote
1
answer
138
views
On a outdoor subpanel can the grounding rod wire be bonded directly to the inside of the metal electric panel?
On an outdoor sub panel with grounding rods can I bond the grounding rod's wire directly to the inside of the metal electric panel, and then attach all the other ground wires to a grounding bar. The ...
- 171
3
votes
1
answer
4k
views
100a Subpanel - Detached Garage Plan Review with Schematic
Previous Conversation below. Here is the revised plan - which now includes #6 Bare Copper wire throughout the run from main panel to new sub panel.
Is this plan good to go at this point? Would you ...
- 33
0
votes
1
answer
84
views
1 Volt reading between hot phase of sub panel and enclosure and frame
My grounding bus in my subpanel, which is secured to the panel frame, reads 122 VAC to hot phase which is great. I also get 122 VAC from hot phase to neutral bus. Shouldn't I also get 122 VAC +/- ...
- 1
0
votes
1
answer
257
views
240v panel-no neutral
This is the culmination of a few posts (Disconnecting 240 hots without disconnecting neutral?, 240v only subpanel, no ground?) to see if this seems right.
I had a subpanel A with 20A double pole ...
- 49
2
votes
1
answer
297
views
Grounding Main Sub-panel Sub sub-panel
I have a 200A main panel installed in our garage on an exterior block wall (single family, residential, construction in 1980). A sub-panel was added next to the main panel supply via a 100A breaker (...
- 79
1
vote
1
answer
138
views
Grounding electrode conductor
I am installing a 125 AMP OUTDOOR MAIN LUG LOAD CENTER which will be protected by a 100Amp CB. The panel will support all the equipment for an inground pool. I have installed the pvc conduit ...
- 11
0
votes
3
answers
636
views
Is it ok to have a ground Rod and a fourth grounding wire in subpanel?
I have an outbuilding (200 ft from house main panel) I have run a 4 wire to the subpanel but wanted to put a ground rod in after reading some things. Is it ok to have both or do I need to disconnect ...
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
0
votes
1
answer
214
views
Subpanel Grounding
I have an existing wire run from my main panel on the house to a detached garage with three wires: Red, Black and White. No ground. I want to install a new subpanel in the garage. I'll be installing ...
- 103
2
votes
0
answers
1k
views
Ground Rod in Raised Garden Bed
My detached garage has a subpanel fed by 3-wire plus ground from the main panel on the house. It's 8AWG copper conductors plus 10AWG ground breakered at 50 amps. In the distant future I may run new ...
- 140
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
0
votes
1
answer
118
views
Connecting a detached building to 30 amp plug
I have a detached building that I want to move in the near future (after my house is done). Can I wire it to a 30 amp plug like an RV would do that way it is still mobile? More specifically
is it ...
- 1
-1
votes
1
answer
398
views
How should I ground a shop and a house who both have 2 breaker boxes? One fed by the grid and the other a solar inverter
As the title states, I have a house and a shop both with 240 feeders coming from the grid.
I have solar panels and a solar inverter in the shop.
The solar inverter is powered by panels, a 48v ...
0
votes
1
answer
1k
views
How to fix bonded neutral and ground in subpanels
I am selling my home and the buyers inspection says the bonded neutral and ground must be corrected. How should I fix this?
1
vote
2
answers
840
views
12/3 underground to garage multiple 14/2 wires to bare 12/3. No ground rod anywhere around 14 x54 detached garage
I've been in this house, built in 1941, for two years now. I've been working on replacing very old wiring in the basement for some uncomfortable issues I've found. But these issues pale in comparison ...
- 11
1
vote
1
answer
320
views
Wanting to add a ground wire for a sub panel replacement. Would like to use use nearby EMT
Updating electric in an attached shop. There are two sub panels, both fed 240 from the main panel in the house. The one has large aluminum conduit, with the conduit serving as ground. The smaller ...
- 11
5
votes
3
answers
2k
views
Ground wire pass-through safety switch to sub panel?
I have an out-building 150+ feet from the main service panel with its own 240v 60 amp sub panel. It is powered via a four wire bundle going through underground conduit -- 2 x 120v feeders, 1 neutral, ...
- 870
0
votes
2
answers
3k
views
Neutral and ground seperation at a sub-panel
Could someone explain to me why the neutral and ground bars are never bonded on a sub panel? It's my understanding that the reason they're separated is so that the current returning on the neutral ...
- 1
1
vote
2
answers
6k
views
How do you properly use metal conduit as a ground?
I have read here that metal conduit can be used as the ground and you needn't then pull a separate ground wire:
What are the NEC rules governing this?
How do you avoid "weak ground" links ...
- 1,215
1
vote
3
answers
8k
views
Where do I attach the Ground and Neutral inside a sub-panel?
I'm wiring 100 amp subpanel to detached Garage with 2/2/2/4 copper. I'm hoping to replace the subpanel to my detached garage which was previously wired to run on a 40 or 60 amp subpanel with like 6 ...
3
votes
2
answers
1k
views
8 AWG solid EGC in raceway for 100 amp subpanel
I'm adding a 100 amp subpanel to my detached garage and have a question about the EGC I've already pulled through the underground LFNC-B raceway.
Taking the advice from a similar post on this forum, I ...
- 33
3
votes
1
answer
647
views
Grounding branch circuits in gutter instead of in panel
Replacing a sub panel (with neutral from main panel and local ground rod). The branch circuits will come in via a Wiegmann gutter above the subpanel.
Is there an issue having a grounding bar in the ...
- 55
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 ...
5
votes
1
answer
1k
views
Ground wires absent from circuits exiting apartment panel
I'm taking a look at the (only) panel in my apartment (7 apartments in building, NYC) and I'm noticing that out of all the circuits leaving the panel, not a single one of them contains a ground wire. ...
- 323
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
1
vote
3
answers
30k
views
Should I use SER or URD cable for a 100 amp sub-panel?
I am running a new line from my main panel on the pole out to a sub panel in my shop. The sub panel will be 100amp. I have a 180' run and have buried 1-1/2" sch40 conduit. I'm planning on using 1/...
2
votes
2
answers
711
views
4awg Al on ground bar with 6awg max holes
Im adding a subpanel, I installed a tgl2 (GE) ground bar that take 6awg max, my ser is a 2-2-2-4. Is there a way I can use this ground bar with a 4awg Al ? Also do I need to use some type of grease on ...
3
votes
1
answer
1k
views
adding new circuit to generator subpanel without a ground bar
I have a main Square D panel with a post-installed Generac (Siemens) subpanel with automatic transfer switch to standby generator. I want to add a new 15A circuit to the subpanel so I can move a ...
- 361
2
votes
3
answers
4k
views
Does the ground bar on a subpanel need to be bonded to the subpanel?
I had a lightning strike near my house that damaged the electric in my shed and now I need to replace the subpanel. I have a question about the groundbar.
In the subpanel I am replacing the grouond ...
user118344
0
votes
1
answer
82
views
Is grounding the subpanel not required some times
Is the sub panel properly grounded, only Load and Neutral wiring were located at the sub panel as shown below. This Sub panel is at a single floor Condo, built 1970, Updated with Newer Electrical ...
- 707
1
vote
1
answer
164
views
Running wire for new subpanel in garage, how to best utilize existing wiring considering the scope of my project?
I have a 200amp main panel in my home, and my garage has a subpanel fed by a two pole 50amp breaker by approximately 85' of 6/3 plus ground cable. I use my garage as a workshop, greenhouse, and office....
- 31