All Questions
21 questions
0
votes
1
answer
159
views
Do service panels in new homes in Texas need to be grounded?
Is there an NEC code that explains if a NEW construction breaker box is installed in a NEW house construction, it has to be grounded (not replacing an old breaker box)? In other words, doesn't a new ...
0
votes
1
answer
152
views
Where is my service panel grounded?
I'm wanting to install a critical loads panel connected to an EG4 6000xp.
This is my main panel and I see the two hots and a neutral but do not see the ground.
Is the main panel grounded?
Top of ...
- 1
0
votes
1
answer
176
views
Why did a wire short to the metal junction box without tripping the breaker?
I opened up a junction box to reconfigure two switches.
I turned the breaker off and unscrewed one switch and all of its wires.
The hot, neutral and ground were separated so they wouldn't touch.
I ...
- 5,156
5
votes
2
answers
436
views
Why is my electrical panel buzzing?
I hope you can help me identify where this is coming from. First my electrical is all metallic with 2 wires only, and ground via metal conduit.
After some troubleshooting I've found the following:
On ...
- 89
0
votes
1
answer
195
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
3
votes
2
answers
386
views
Is there a way to check if your breaker box is grounded?
I've got an old home, built in 1945. I assume the electrical box in the basement isn't that old. There's a ground to the main water line entry. There's also this other wire that looks like a ground ...
- 716
1
vote
2
answers
125
views
Why don't plug-on ground panelboards seem to exist?
If I understand correctly, plug-on neutral panelboards allow GFI/AFI breakers to be installed without running a separate neutral wire (pigtails) from the breaker to the neutral bus bar, and they have ...
- 409
12
votes
2
answers
2k
views
Should a device with a non-polarized plug touching hot and ground trip a breaker?
I have the following:
a NEMA 5-20 receptable (typical 20amp grounded receptacle) mounted in an exposed work cover on a metal box fed with 12ga conductors through EMF.
a typical string of holiday ...
- 239
1
vote
1
answer
1k
views
Hot and ground shorted with breaker off, but has normal voltage after breaker on [duplicate]
I swapped an old outlet and a pair of switches on the same circuit today (same breaker), and used a multimeter to check the connectivity to make sure I installed them correctly.
With the breaker off, ...
- 13
0
votes
0
answers
1k
views
Hot to ground voltage reads ~1 volt but breaker is not tripped
Summary: I'm seeing a very low voltage read in between the hot wire and the ground in a switch. Yet the circuit breaker isn't tripped and everything works fine. Should I do something about it? If so, ...
- 153
2
votes
1
answer
377
views
Interaction between a circuit breaker and a switch
This is a very basic question which I'm sure has already been asked and has a simple answer, but I was unable to get a satisfying straightforward explanation via an internet search. Suppose I have a ...
- 467
2
votes
1
answer
338
views
CAFI Breaker Randomly Trips
I have a new CAFI breaker in a Square D Sub-Panel (older panel - T5 Series, 24 slots, but new installation of breakers and wires due to renovation work, whole cottage re-wired). I did the rough and ...
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
3
votes
2
answers
13k
views
No ground bus in panel
Correct me if I’m wrong but there is no bus panel here. Working on a bath remodel and running new wires to two new breakers for new GFCI receptacle and one for heated floor. As this is main panel ...
- 33
1
vote
0
answers
637
views
Dishwasher chassis outputting an AC voltage
I've recently noticed that touching the metal interior of my dishwasher gives me a slight tingling. I put that (stupidly) to static electricity.
For "fun" I then decided to touch a finger on the ...
- 113
0
votes
1
answer
2k
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 ...
- 69
4
votes
1
answer
422
views
What would cause arcing between equipment connected to each other where power is connected to different circuits?
Scenario
In my "datacenter" (read: basement), I've got a rack of various computer and A/V equipment plugged into a UPS, and into a standard 120v outlet on one side of the room. This equipment works ...
- 153
3
votes
1
answer
8k
views
How to wire ground when the sub-panel is Plug-On Neutral
I need to install a sub-panel in my home. Both the main panel and the sub panel are in the same building. I purchased a Square D Homeline Indoor Plug-On Neutral panel (Model # HOM2040M100PCVP) for ...
- 31
1
vote
2
answers
470
views
Light sconces tripping circuit breaker
I recently installed two sconces in our kitchen to replace some old halogen lights with LED bulbs. The boxes had three (?!) White wires twisted together, two black wires twisted, and one red. I ...
- 131
4
votes
2
answers
1k
views
How to track down a short circuit in attic with pressed metal ceiling?
When switching on a light the circuit breaker tripped.
On the distribution board, I switched off the sub-circuit for the light. The rest of the house and the plugs in the room with the light still ...
- 141
1
vote
2
answers
2k
views
Can having a bad grounding situation destroy a circuit breaker?
We moved into a home, built a while ago. there are wires hanging and covered in black tape on a chimney.
I bought 2 sconces and put them in place. i did not hook up the ground wire on one of them, ...
- 111