Questions tagged [circuit-breaker]

For questions generally relating to safety devices used to automatically stop the flow of electric current in the event of a fault condition. Use this tag for questions about fuses, too.

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2
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1answer
57 views

Two ovens on one breaker: NEC says OK, but installation manual wants dedicated circuit

I have a situation very similar to using two oven in one outlet. I'd like to install a 30 amp GE Advantium 220v oven and a 20 amp GE thermal oven on an existing circuit with a 50 amp breaker. However, ...
0
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1answer
64 views

How to tell what is causing my breaker to trip

I have a 15 AMP breaker that will not stay on. Shut off lights, went to bed as usual and in the morning the lights would not come on. I inspected the breaker panel and found that circuit was tripped. ...
2
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1answer
36 views

Identifying neutral and ground in breaker box

Short version: In this breaker box to install a 14-50R would I run both ground and neutral to the same bus bar on the right? Long version: This breaker box is directly beneath the meter outdoors in a ...
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1answer
52 views

What is the difference between different rated RCCBs except for the price?

Say there's a need to install a 25A30ma Residual Current Circuit Breaker (i.e. ABB FH202 AC-25/0,03). It is going to be followed by a normal circuit breaker, to protect the wiring and the RCCB (16A). ...
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3answers
66 views

How is the service drop or service lateral of a residential electric service protected from overcurrent?

In typical North American residences, a pole transformer supplies two leg 120 V electrical service to a home. My service is rated at 200 A. If I were to draw excess current from the triplex service ...
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2answers
50 views

Window AC unit LCDI tripping when powered by my solar inverter

I have a small 200w solar power system consisting of a Victron 500VA inverter (900w peak) with a 100ah AGM battery. I just purchased a 5000BTU/4 amp window unit that draws a peak of 430w according to ...
15
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4answers
2k views

GFI outlets tripped after power outage

I live in a rural area that has frequent power outages (Several per month. Less than a minute in duration). When the power is restored, several GFI outlets always trip. I am trying to track down ...
2
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2answers
78 views

Voltage on the protective earth conductor?

Got a weird situation in my house. Sorry for the horrible "hand drawing" below and also for probably not using the correct terms (i'm not an electrician). Here's one of the multiple circuits in my ...
7
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6answers
2k views

Coupling two 15 Amp circuit breaker for 20 Amp

My Bosch micro/oven need 120 volt 20 Amp receptacle. I do not have a 20 Amp circuit breaker for this purpose. Can I couple two separate 15 Amp breakers as a dedicated source to provide higher Amperage ...
0
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1answer
32 views

Branch circuit sizing for 5 HP 3-phase 230 V motor run on 208 V?

If I'm reading NEC 430 Part III correctly, a 5 HP, 230 V, 3-phase motor with 12.8 A full-load current needs a 16 A circuit (125% of full-load current). So, 12 ga wire with a 20 A breaker should do. ...
0
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1answer
66 views

Two new circuits - both trip simultaneously on load

Adding two new 20a AFCI circuits to a basement project. I tied the circuits to the breaker panel and all outlets test out ok with a tester. The second I put any load on either circuit, however, BOTH ...
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1answer
50 views

120v on black and white wires

I have been troubleshooting this for some time now. Any help would be great! A friend of mine's wife plugged in a hair dryer and lost power about 2 minutes into it. A few hours later the power was ...
0
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1answer
21 views

Dishwasher confusion

I’m trying to track a fault in my wiring to the dishwasher. Ive seen evidence of a critter chewing on a coating but nothing touching anything bare to ground out. The breaker trips instantly after I ...
3
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2answers
52 views

How to investigate a problem with blown 50 amp HVAC fuse without power?

My AC unit has the fan working but not the condenser and I found that one of the two 50 amp fuses was bad. Unfortunately after replacing it, I saw and heard a spark and the new fuse was blown ...
0
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2answers
75 views

Switch(es?) blowing AFCI breaker

So I need some help (again) with an electrical issue. I wired the basement and due to some new building code all the breakers are AFCI (which I am suspecting is a part of the problem). In the ...
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6answers
76 views

How might one trip a breaker from a GFCI outlet?

Somewhat derivative of How can I trip a breaker from the outlet, how could someone relatively safely and quickly, with basic tools, trip a breaker at a GFCI outlet (relatively safely meaning not ...
3
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2answers
178 views

Possible to ground-fault protect both legs of a MWBC with two single-pole breakers?

To get a MWBC working, with both legs GF protected, I installed 2 Single Pole GFI breakers, on adjacent slots, with a handle-tie. Since there are 2 lugs for Neutral wires, and only one neutral coming ...
1
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1answer
70 views

Outlet box has voltage when a device is plugged in on another circuit

Our house was built in 1964 and I wanted to replace some of the electrical outlets. However, there's something bothering me. When I turn off the circuit for an outlet, my low range non-contact ...
0
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1answer
47 views

Overcurrent Protection

I am trying to find a device that I can plug into the wall, then plug another device into that will offer overcurrent protection. Basically, a circuit breaker that will trip before the actual circuit ...
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2answers
58 views

Is there such a thing as an arc-fault breaker in 1/2” size for GE?

The panel is loaded but not to capacity. To bring the current sub-panel up to the imminent adoption of the 2017 code, half-sized AFCI or combination breakers would be great. Is there such a thing as ...
1
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4answers
145 views

Automatically trip breaker in power outage

Is there a way to trip a breaker, or otherwise kill the connection to an appliance during a power outage that doesn't automatically turn back on when power is restored? Background: home in the north ...
0
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1answer
44 views

Double-pole breaker connected to two receptacles/outlets on same column/post

We have a double-pole breaker that seemingly is connected to two outlets in the same column/post in a room. 3-Light tester reads all three lights, multimeter reads around 240 volts in each outlet. ...
2
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1answer
105 views

Reading electrical clamp tester higher voltage/amp 400A

A sub panel CH 60AMP 3 Pole breaker keeps tripping. I'd like to test the AMPs on the three wires. My clamp tool measures 7.9A while on the 400A AC setting. That seems awfully low to trip a 60 AMP ...
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2answers
51 views

Diagnosing frequent trips on arc fault / ground fault (dual) breakers

During recent work we've been upgrading breakers to dual arc-fault / ground fault. Square D QO series (USA). I've noticed a couple of them tripping pretty frequently when certain appliances are used. ...
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0answers
36 views

What would trip a Eaton 20a gfci breaker

Fairly new less than one month old Eaton 20a gfci breaker to trip with nothing but the white common coil attached. Meaning the breaker is in the main box with no load circuit connected. Meaning I ...
0
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4answers
151 views

Breaker keeps tripping even when nothing plugged in

My bedroom breaker keeps tripping even when nothing is plugged in to any of the outlet linked to this breaker. Sometimes it will keep tripping when I try to push it back up and after 10-20 min' turn ...
1
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0answers
63 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 ...
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3answers
90 views

Where to find main shut off switch for breaker

Where can I find the main shut off breaker It doesn’t let upload my picture but my breaker is small but doesn’t have main shut off and meter doesn’t have a switch either
2
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1answer
75 views

Can I convert a fused dryer outlet to two 20 amp circuits?

We have a dryer plug we no longer use. We would like to make it a quad outlet box instead. The outlet is wired to a fuse panel with 2 30 amp cartridge fuses. Is it within code to switch those 2 fuses ...
0
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3answers
68 views

Should the main circuit breaker be AFCI, CAFCI or just standard?

Let's say all the other breakers in the panel are standard (i.e. not ACFI). Would it help to have the main breaker AFCI or CAFCI? Conversely, let's say the other breakers are all CAFCI. Can I use a ...
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0answers
29 views

Only one side of Tandem Circuit lost power at outlets

Replaced all outlets in a room that was part of a 15amp tandem circuit breaker. One circuit had a room that has dual outlets with a switch controlling the top outlet on each. Turned both breakers off ...
0
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2answers
57 views

Why do type 2 SPD’s* require overcurrent protection (*load side, mains, Surge Protection Devices)

Bought a house built in the 1970’s in a 1970’s neighborhood. It has a 200AMP main panel. A serviceman replacing 1 of the 2 mainboards in the refrigerator suggested that I install an SPD inline in each ...
2
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1answer
60 views

Can fuses be intermittent?

While I was at work today I had a power outage in one of my rooms. I know because I had multiple computers in there that were off for several minutes(fully booted back up in 14 minutes), but the ...
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2answers
77 views

Turning off oven breaker cuts power to AC, and vice versa. Why?

Turning off oven breaker cuts power to AC, and vice versa. Why?
0
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2answers
46 views

GFCI breaker trips

My 20 amp breaker in my basement to my unattached garage works fine, but when I put in a gfci breaker, it pops as soon as I flip it on, two different breakers. The only thing that is plugged into my ...
0
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1answer
54 views

Separate box for electric water heater?

Do I need a separate electrical box for an electric water heater. I was told I needed a one so it's up to code as per the electrician? Changing from gas to electric I thought I could connect it to the ...
5
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5answers
5k views

I do not have power to all my breakers

I exchanged my double pole 40 ampere breaker that supplied my sub panel for my garage with a single pole 40 ampere and now out of my six breakers in the sub panel only 1,3, and 5 have power. How do I ...
1
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1answer
35 views

Two Poles Three Black Wires and One White - Convert to 120 V Outlets

I have a two pole breaker with three black wires and one white wire. The breaker is 50 amps. The three black wires are labeled "Load Power", and the white wire is labeled "Neutral". Where an outlet ...
2
votes
1answer
98 views

circuit box problem

Sparks flew out of my breaker box, probably due to faulty wiring. In an effort to troubleshoot, I removed all the breaker and labeled them. Got a wire tracer and tried to trace the wires to see ...
0
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3answers
62 views

Solar Power System Circuit Breaker and fuse Amps

So the question is kinda part 2 of my question about the DC Output Today I went to Hellweg (It's like an Electronics shop in Germany/Europe). To buy a Circuit Breaker or Fuse (idk what I am looking ...
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1answer
93 views

Can I wire both a 50 amp hot tub and 50 amp RV plug in the same box?

I have two projects in the works, installing a hot tub and building an RV pad. Both the RV and hot tub run on 50 amps and 220 volts. RV's plug-in but hot tubs are wired directly. Is there a single ...
0
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1answer
72 views

Power tripping out

I live in Spain, my home's electrics are just terrible. I'm waiting for an electrician to look at it and quote me for sorting it all out. Things are frequently tripping out, I've been trying to spot ...
1
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2answers
106 views

What alternatives to Stab-Lok breakers are there?

After reading this article: https://inspectapedia.com/fpe/Federal_Pioneer_Panel_Safety.php and from it a link to this one: https://inspectapedia.com/electric/Circuit-Breaker-Defects-Aronstein-IEEE-...
1
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1answer
93 views

Why does a breaker buzz when you turn it on?

I've had an issue recently where turning on the light in one room occasionally turns off the power in that breaker. The breaker doesn't actually appear to be tripped, but resetting the breaker will ...
1
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2answers
138 views

Can I run a #12 outlet branch and a #14 light branch off a 30A breaker?

Was wondering if i can feed an entire room with one 30 amp breaker, 10/2 to an attic junction box, then break out 12/2 for outlet daisy chain (four 15 amp-type outlets) and 14/2 for a light circuit.
0
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1answer
81 views

Apartment's Hallway Lights Controlled By My Unit's Circuit Breaker

I manually flipped a breaker before doing work in my bathroom and noticed that the apartment hallway light is controlled by my unit's circuit breaker. Does this mean that I get billed for the hallway ...
2
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1answer
127 views

Is there a reason the hot wire is connected to the neutral bar and the white to the breaker?

The black wire is connected to the neutral bar and the white wire is connected to the breaker. Should it be this way for any reason?
0
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0answers
43 views

Dryer (30amp) on Single Pole Breaker

My 200amp panel is pretty full so I started mapping all the circuits since I suspected that there are abandoned circuits or circuits with very small loads on them. I am used to finding dryers on 30amp ...
0
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2answers
95 views

Combining wires from two breakers to one appliance?

I have a wall oven and a microwave oven, connected to 30A and 20A breakers respectively, and both are 240V. Now I'm thinking of replacing it with another double-oven model that runs a single wire ...
5
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2answers
297 views

breaker trips every 2 to 8 days (4 companies failed to fix this)

4 different electrical companies have inspected my apartment none have solved this issue edit (2019 july 31): the 5th electrician finally fixed it this was largely a result of the info y'all gave me ...