Timeline for 2 breakers control 1 circuit, and one of them also controls another circuit
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 10 at 0:45 | comment | added | Robert Chapin | @Homeowner982747273 That's an open circuit a.k.a. phantom voltage reading. We won't be able to guess why you have 2 circuits there but it was clearly left in an unsafe condition with the tape on it. | |
| Jan 9 at 20:15 | comment | added | Homeowner982747273 | I just went and checked everything with a multimeter. When Breaker B is on I get 120V on the random cable and no power on the outlets or dishwasher cables. When Breaker A is on, I get 120V at the outlets and dishwasher cables and ~40V on the random cable. | |
| Jan 9 at 20:03 | comment | added | Homeowner982747273 | As far as I can tell, absolutely nothing else in the area is connected to Breaker B, and I also didn't have a chance yet to test the random cable's voltage when Breaker A is on, I only checked it with the NCV. | |
| Jan 9 at 20:02 | comment | added | Homeowner982747273 | I just tested the outlets with the different breaker combinations again and I found that the outlets above the dishwasher switch are only powered when Breaker A is on. The random cable that's just hanging out is the only thing that is giving me an NCV reading when Breaker B is on, and it also triggers the NCV when Breaker A is on. So it seems like the outlets are just on the same circuit as the dishwasher, and this random cable is on both breakers. Breaker A is the bottom1/2 of a double breaker, and Breaker B is the top half of the double breaker directly under that. | |
| Jan 9 at 17:39 | comment | added | Homeowner982747273 | Thanks for the update on the cable with the tape! I will put that inside a junction box. I thought it was weird that it was just hanging out there with tape on it. | |
| Jan 9 at 17:22 | comment | added | Robert Chapin | That's okay too. It might be somewhere else or you might just have unreliable NCV results. | |
| Jan 9 at 16:25 | comment | added | Homeowner982747273 | I added some pictures above, they are a bit dark so you may not be able to see well, but there is no red wire coming into the switchbox. There are only the 2 black wires, 2 white wires, and 2 ground wires, 1 set each coming from Cables 1 and 2 as labeled in the pictures. | |
| Jan 9 at 16:20 | comment | added | Robert Chapin | @Homeowner982747273 One thing you might do is look inside the switch box and check for a red wire. Since you don't have any red wires under the countertop, you might find one coming from the panelboard to the switch. That would be the 2nd circuit. | |
| Jan 9 at 16:11 | history | edited | Robert Chapin | CC BY-SA 4.0 |
added 177 characters in body
|
| Jan 9 at 15:24 | comment | added | Homeowner982747273 | Thank you for that explanation! I did test that power was coming from the associated outlets, but I can't remember if I checked it in every breaker on/off scenario so I will do that later. If the NCV would give weird readings in that scenario then it's possible that's what I was seeing. | |
| Jan 9 at 15:07 | history | edited | Robert Chapin | CC BY-SA 4.0 |
added 141 characters in body
|
| Jan 9 at 15:02 | history | answered | Robert Chapin | CC BY-SA 4.0 |