13 votes

Center of a wire nut holding neutral wires is burned, but it doesn't seem loose

There is already an excellent answer about how to fix this. As far as Why didn't GFCI or AFCI trip?: GFCI only trips if the electricity goes someplace it shouldn't. It was in the right place - flowing ...
11 votes

Center of a wire nut holding neutral wires is burned, but it doesn't seem loose

Turn the circuit off and them remove the connector. At that point you will see where the wires got hot because they were not making good contact. You probably have a wire that was not properly ...
  • 4,143
11 votes
Accepted

Center of a wire nut holding neutral wires is burned, but it doesn't seem loose

But as you can see on my photo, it doesn't look like this burned wire nut was loose. What does a loose wire nut look like? That characteristic does not lend itself to photo inspection. It must be ...
9 votes
Accepted

GFCI dead front switch for exterior outlets won't stay on

Turn off the circuit breaker, open up the deadfront/switch GFCI, remove (only) the load wires, turn breaker back on, see if it resets. If so, it's not the GFCI. If not, it probably is. If not the GFCI,...
  • 146k
8 votes
Accepted

WR GFCI or WR outlet for outside use ( for US)

Definitely option 1 - keep the GFCI upstream. You do need to make sure the upstream GFCI is wired properly. You can do that by installing the replacement receptacles and make sure they work. Then ...
8 votes
Accepted

Upgrading 240v 3 prong dryer outlet to 4 prong

The ground wire coming off the cable must go to the metal box first. That's a Code requirement. If it is competently attached to the metal box using a feature intended for that purpose, you're all ...
7 votes

Upgrading 240v 3 prong dryer outlet to 4 prong

There should be (almost always is) a 10-32 threaded hole somewhere in the box. Normally it's the smallest hole. In newer boxes it's often in a "hump," which provides screw clearance if ...
  • 146k
5 votes

Locate plug on a mystery breaker - unable to find by conventional means

"Special expensive" tools is too subjective. Cable Tracers can be bought for under $30 and into the thousands but for around $50 you can buy one that will help you tone out this cable. ...
  • 20.6k
5 votes

Upgrading 240v 3 prong dryer outlet to 4 prong

You may have a 4" wide box under the visible mud ring. Sample photo of 1 device mud ring which may be what you have: Sample photo of 2 device mud ring replacement which would give you more room ...
  • 2,033
4 votes
Accepted

How to add a 110v receptacle to my laundry room

As far as why the existing laundry room 120V receptacle does not have GFCI protection, it is quite likely that it was not required at the time. GFCI has, generally, been required longest in kitchens ...
4 votes

USB outlet in narrow wall box

Sorry to point this out, but page one of the manufacturer's instructions states: This device is to be installed in a wall box measuring at least 3" x 2" x 2-1/2" Here was the link for ...
4 votes
Accepted

Do I need an GFCI Breaker if my outdoor outlets are GFCI

I'm a little confused about what your Alcan 3/C cable is. Is it 3-wire including ground, or 3-wire with ground also? I gather it's #12 aluminum which doesn't bother me if you make a point not to ...
4 votes

WR GFCI or WR outlet for outside use ( for US)

Usually one GFCI protection device per circuit. Saves running around resetting/finding them all. Weather does stuff that GFCIs don't like. Moisture/humidly, heat/cold, sun. They last two or three ...
  • 11.7k
3 votes

Are outlet cables required to be run in a single sequence?

The circuit breaker itself will have specification for how many wires it can support under the lug, typically just one, and what torque you need to achieve. I'm really confused as to why you would ...
  • 12.7k
3 votes

What might cause 2 GFCI outlets to not reset after a power surge?

I had a bad power surge at a vacation home, tripped half the breakers and fried every GFCI (about 6) in the house. So your power surge probably fried the GFCIs. If they worked before the surge and ...
3 votes

What might cause 2 GFCI outlets to not reset after a power surge?

So, one of two things happened. Either the power surge caused a ground fault on these two GFCI circuits, and the GFCIs are working as they should... ...Or the power surge damaged the GFCIs and they ...
  • 146k
2 votes

What might cause 2 GFCI outlets to not reset after a power surge?

Don't be in too much of a hurry to replace the "faulty" GFCIs. GFCIs have one job, detecting a certain type of electrical fault that you don't understand. And since you don't understand it, ...
2 votes

What could cause intermittent function in outlets?

The fact that they are working intermittently means a wire connection is loose somewhere. This means there could be arcing which is a fire hazard. Narrow it down to the circuit that those outlets ...
  • 99
2 votes

How can I figure out which switches used to control which outlets?

It's best you redo the work, because people who don't know about breaking off tabs is absolutely certain to not know about the NEC 110.14 torque screwdriver requirement (sloppily torqued screws are ...
2 votes

Are outlet cables required to be run in a single sequence?

In home wiring, the route of cabling is in a "tree topology" meaning there are unlimited branches, but no "loops back to itself". Reasons below. A vine topology (one long string) ...
2 votes

Can I re-use WOOD screws for mounting a ceiling fan?

That looks like a plastic box. Plastic requires a greater thread bite than metal usually. Would reuse those screws, since they are made for that box. They are probably only look like wood screws, ...
  • 11.7k
1 vote

new electrical outlet screws touching sides

Yes, you can use tape. I find tape very useful when it is a marginal problem. But if it is a really close fit where you know there is a problem, I don't think that's a great idea. I had a couple of ...
1 vote

Two Outlets Not Getting Electricity

It is the good outlet before the bad one. The incoming wires there are fine, which is why it works. It's the outgoing wires at that outlet which are having a problem. It is extremely unlikely to be a ...
1 vote

Are outlet cables required to be run in a single sequence?

There are a few different issues here: Old cable - that has already been discussed, and will be a decision for the inspector, unless you redo it with new cable before inspection. Separate home runs ...
1 vote

Lightswitch keeps tripping GFCI

Most likely causes: #1 You have a light fixture faulted to ground. This is a common problem because light fixtures sometimes have uninsulated screws that can easily contact a ground wire inside a ...
1 vote

GFCI outlet randomly stops working

Make sure you understand the difference between 406.4(D)(2)(b) and 406.4(D)(2)(c) in the NEC. If you are connecting more than one GFCI according to 406.4(D)(2)(b) and used the load side to connect ...
1 vote

Center of a wire nut holding neutral wires is burned, but it doesn't seem loose

As your theory of the loose connection under the wire nut sounds the most obvious there is another scenario that it could be a mulitwire wire connection with 2 hots on the same phase as a result the ...
1 vote

How to add a 110v receptacle to my laundry room

GFCI protection for laundry rooms didn't come in until 2011? 2014? So it is grandfathered. Even if it was not grandfathered, a GFCI receptacle would suffice. A GFCI breaker is not required. So a GFCI ...
1 vote

How to add a 110v receptacle to my laundry room

A few things here: To meet current code the existing receptacle should have GFCI protection BUT if you are going to upgrade for that you may need to add AFCI also -- technically the code requires it ...
  • 348
1 vote

What might cause 2 GFCI outlets to not reset after a power surge?

Might need to replace the two GFIs. Turn off the breaker/s for those two, and double check there is no power. Take pictures of how they are wired and replace them the same way. GFIs do tend to break/...
  • 11.7k

Only top scored, non community-wiki answers of a minimum length are eligible