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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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1answer
21 views

Converting Tandem circuit with shared neutral to GFCI

My exterior outlet/garage outlets are part of a 15a tandem switch currently that's not GFCI. Looks like this: One of the hots runs the string of outlets I want to protect, then there's a hot from the ...
9
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3answers
2k views

Can someone explain how this makes sense electrically?

The wiring in my house is... odd. Nearly every pair of outlets has one of the outlets connected to a light switch. Sometimes that switch is quite far from the outlet even when there are other closer ...
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1answer
47 views

How to fix a fuse box socket

I have an old fuse box from the 50s or earlier that accepts type TL fuses. I recently discovered two of the insulating washers inside of the sockets were missing. I took out a washer from a good ...
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1answer
51 views

Can an arcing switch damage the breaker or cause a fire?

I live in a 1980s mobile home with light switches and breakers as in the picture. If the switch is arcing or if the switch is held between on/off for a few seconds can this damage the breaker? The ...
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2answers
31 views

How to put main breaker in Square D Hom612L100 breaker panel?

This panel (Square D Hom612L100) has 4 slots. Is it possible to make one of them serve as the main breaker?
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2answers
98 views

Using an older 200A breaker panel on a 60A feeder circuit from house?

I'm in the planning stages of a new workshop/shed build. I plan to run a 60A ciruit from the main panel in the house to a subpanel in the shed. I recently picked up a used Challenger QM322200 200A ...
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3answers
112 views

Hit wire on concrete wall while drilling a hole - problem?

Hit a wire while drilling a hole on a concrete wall. Didn't feel like hitting anything, except there was a short, spark, and tripped the breaker. With the breaker back on, haven't noticed any ...
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2answers
47 views

Is it better to use a AFCI/ GFCI breaker in the panel or do to use a AFCI/ GFCI receptacle? [closed]

To protect a bathroom outlet, should I put an AFCI/GFCI breaker in the breaker box or do I put in an AFCI/GFCI receptacle? Can a AFCI/GFCI receptacle be divided into 2 circuits with a 20A breaker ...
2
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1answer
39 views

What to do about breaker that triggers main panel, and breaker that's stuck?

I've moved into an older home and am trying to figure out the wiring. There's a small addition at the back of the house where I'm trying to figure out the wiring behind a blank wall panel. Before ...
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1answer
41 views

How to split a circuit

I have a one floor house with semi finished basement. On the main floor the Living room, Bath, 2 Bedrooms, garage and Microwave outlets are on 1 circuit. If I go to skinny breakers I have room to run ...
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1answer
64 views

Single phase hook up to 3 phase box

I have a customer that wants to install a single phase 120/208v coffee brewer to a 3 phase panel. Can this be done safely? The unit uses 220v for heating elements and 120v for control board.
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3answers
152 views

What type of Circuit Breaker is required for this slot?

I was looking at adding an extra breaker or two to my panel as I have two open slots. I opened the front of my panel to see what I was dealing with inside and was perplexed by what I found, I'm going ...
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2answers
103 views

Old Style Fuse Box

I'm in the UK and in the process of buying my first house (early 1900's victorian terrace). I paid for a home buyers report which came back with some areas for improvement, one being the fuse box. The ...
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2answers
81 views

Will this breaker fit into this panel?

I'm looking at a Siemens PW1224L1200CU Main Lug Load Center. Will either the 200-amp branch breaker QN2200 or QN2200R fit into this panel? I looked at the wiring diagram but was unsure if a QN2200R ...
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2answers
27 views

Adding Recessed Lighting to bathroom circuit

I currently have a dedicated 15A breaker connected to 2 outlets (with GFCI) in a bathroom using 14/2. These 2 outlets are all that is connected to the breaker. I plan to add some recessed lighting ...
2
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1answer
46 views

What size breaker and wire for a barn feeder circuit?

February winds blew down my overhead service to my barn. I would like to replace the 1950's two wire service and update to a safe, sub feed using a complete new underground from a 150 amp house box. ...
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3answers
72 views

2 breakers - should they work as one?

I have a circuit with 2 15 amp breakers. They don’t act, individually they both have to be shut off to shut off the circuits. Am I looking for an outlet with two devices? Example switch and outlet? ...
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2answers
71 views

2 wires with same neutral in a tandem circuit breaker on the same leg

For reasons not relevant, I have spent the whole day reading about circuit breakers and I think I found an issue in the current configuration (changed after a contractor remodeled our kitchen). I ...
1
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1answer
39 views

Do I need to upgrade other circuits if I only plan to change one?

(San Francisco, California) I plan to run a new dedicated circuit for a kitchen appliance, and to get up to code also move the bathroom to its dedicated circuit as well. This is an old house. The ...
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1answer
49 views

Why does main breaker trips before the smaller one?

I have 6 x 20A breakers that stayed ON while the main 63A tripped. I turned the smaller breakers OFF and then turned the main one ON. One by one, I started turning ON the smaller ones, till the main ...
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2answers
137 views

Electrical nightmare

Last year our lights began surging and then my wife noticed the old fuse holder was broken and not making a good contact. We decided to upgrade the fuse panel and bring it closer to code. The first ...
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4answers
91 views

Circuit Breakers: Do they degrade over time and start tripping?

Sorry for the newbie question but I have a circuit breaker (Hager Series MP-E – Magnetic Switch Bipolar 30 A Curve) in my house that absolutely never tripped. This is the main CB in my house. Usage ...
2
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2answers
125 views

What is the principle behind “circuit total limitation” (CTL) for electrical panels?

Contemporary electrical panels/loadcenters limit the number of tandem circuit breakers that can be used. Is this because areas of the underlying panel bus bars can overheat despite all of the ...
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2answers
66 views

QT/tandem breaker wire gauge

Can I use a 14-3 Romex for two different electrical circuits on a 15A QT/tandem breaker? Or should I use one 14-2 for each? My mistake, apologize. Post edited: the QT breaker is a space saver. My ...
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4answers
40 views

15 Amp GFI breaker trips in main Breaker panel

I have one 15 amp GFI breaker in my main panel. We have two patio outlets, the garbage disposal and one outlet in each of the two bathrooms all wired common. Whenever we have company and women are ...
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4answers
102 views

Can I connect a black wire to one breaker and a red to another from the same circuit?

One of my breakers tripped last week and wouldn't reset so it needs to be replaced. This is a double breaker with a black and red wire. The switch with the black wire is the one that won't reset. I ...
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3answers
88 views

Installing two identical breakers in Parallel for very basic redundancy

I have a question about an issue that has been discussed in this forum, but with slightly different parameters. I completely understand that installing two smaller breakers in parallel instead of one ...
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2answers
61 views

AFCI trips when neutral and ground touched

Is this normal? I find an answer here that this is normal but I do not understand. Can anyone add an explanation, please. AFCI is Square D 20A HOM120CAFIC, Issue No. DP-3640 HACR Type
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1answer
38 views

Can I upgrade my 40amps breaker to 50amps or do I need rewiring?

I have a 40amps range breaker. I want to upgrade it to 50amps. I know that the wires need to support 50amps if I want to upgrade it to 50amps. However, I am not able to figure out whether the wires ...
2
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3answers
645 views

Can I operate a well pump with no pressure tank by using the breaker as a switch?

Working on my cabin. Have a drilled well about 100 feet away (maybe a bit more, uphill). 1 inch black PVC well pipe comes into dirt crawl space, pier construction, under cabin. I brought it ...
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0answers
33 views

Ceiling Fan Tripping breaker

I installed a new fan. Since I will be controlling the fan and light from the unit itself, I changed the existing fan controller on the wall to a 15/20 amp on/off switch. Going to the wall controller ...
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4answers
130 views

Can I use two 30amp breakers instead of one 60amp?

I bought a heater (ecosmart11), it needs 60amp. In the building I live I can't change the wiring from 40 to 60 (I bought the place, tho). So my 60amp breaker is useless. But, I can put two 30amp ...
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2answers
62 views

Removing a light switch cuts power to my entire room. Breaker not tripped. Smart Switch Install

I have installed smart switches before, but I moved into a new apartment recently. I have never had a problem before. I removed my old light switch and installed a new smart wifi light switch, and I ...
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3answers
80 views

Can I use 14 gauge wire on a 20 AMP electrical circuit? [duplicate]

Running 12-2 Romex cable from the electrical panel to a J-box located in attic. J-box will connect two GFCI outlets and extend a 14-2 cable to the ceiling light fixture box, where other 14-2 cable ...
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2answers
53 views

afci breakers keep tripping can I used a surge protector at the service to prevent

I have a problem with afci breakers tripping in my 2and a half year old house. The builder's electrician said that the cause is from power surges coming from the electrical company and that I need to ...
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3answers
88 views

Can't Find Main Panel Breaker

A two-pole 30 amp breaker keeps tripping on a brand new dryer and is tripping more often as time goes on (was originally tripping every few weeks or so, now doing it every day), so I figured it would ...
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2answers
28 views

Bath and Closet electric wiring what type of wire and how many circuits?

We would like assistance in the electrical design of our bath and closet remodel, all walls exposed and access to ceiling. We have had a subpanel (100A) installed (14 empty spots) and empty conduit ...
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0answers
32 views

GFCI Breaker Serving GFCI Receptacles Tripping in Extreme Fog and Cold

Lately, I have had an issue where sometime during the night the main GFCI breaker would trip. The only thing different on the nights that this happened was that one of the nights was (1) extremely ...
2
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3answers
62 views

1.25 HP Garbage Disposal Blows Fuse

I have an American Standard High Torque Garbage Disposal (QKGO2), and it was installed by the previous homeowner less than two years ago. It hasn't seen too much use, however, because it trips the ...
2
votes
2answers
41 views

Correct Circuit Sizing - Two Machines Woodworking Shop

I have two machines that require 220+ and I was wondering if one double pole 230 amp breaker would do the trick for both? The run is approximately 60' so I'm wondering if 12 awg wire will work or if ...
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2answers
229 views

Breaker feeding an electric heater trips after one minute

I purchased a Comfort Zone Heater. Model CZ230ER. It is a 7,500 watt 240V unit. This was installed with 10/2 wire to a brand new 30 amp breaker. Once the heater has been running for about a minute ...
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2answers
74 views

Can I add a 20A outlet to my 30A water heater circuit?

I bought my wife a smallish Kiln and it requires a 20 amp circuit. Right next to where we want to use this Kiln is our hot water tank which is on a dedicated 30 amp circuit coming out of the main ...
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2answers
92 views

GFCI breaker trips only when weather is very cold

I have a microwave that works great except when the temperature outside is something like 15 degrees F or cooler outside. When this is the case, it more or less reliably trips the GFCI breaker in my ...
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4answers
2k views

Will my breaker accept #10 wire even though the chart lists #14?

I am hooking up a disconnect for heating air unit. The instructions state use a 25 amp 2 pole breaker with 10-2 wire. The breaker says wire size 14-2. It is an Eaton BR225 beaker. Will it work with 10-...
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0answers
19 views

HVAC unit keeps tripping breaker

had a short in the float switch wire( its all chewed up from rats) the short blew the 5A fuse . I spliced the wire and reattached it to its self in 3 places. this got it working but now its tripping ...
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1answer
152 views

Light switch arcing. Is this a fire hazard?

H, I am new here. I have a few questions about some electrical stuff. I live in a late 80s mobile home (87-89). It is a 2 bed one bath. The light switch in the bathroom is pretty worn out and gets a ...
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0answers
61 views

Electrical outlet acting funny

My wife and I moved into our new house today. I plugged my phone charger in tonight and the outlet sparked and my breaker tripped. I then plugged a different charger in and it didn't trip. I went to a ...
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4answers
168 views

Can my home's power supply handle this tankless water heater?

So my home was built in 1960 and 15-20 years later another room was added on. There are panel boxes everywhere ha. I have mapped it all out and isolated almost everything. Anything that is ...
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1answer
59 views

Circuit is broken when switch is screwed into box, but not outside of box

1954 House with original (cloth over rubber) wiring on the main floor. Replacing fan and light with simple overhead light fixture and toggle switch with a dimmer switch. Box has an incoming conduit ...
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1answer
89 views

Capped off outlets and light switch wiring, now no power to half the house

I am in the process of removing a wall from my home separating the kitchen and dining room. To do this, I needed to remove the wiring from the wall. Steps I took: Shut breakers off to kitchen lights, ...