Categories Electrical Wiring, Residential

Why does my circuit breaker keep tripping?

circuit breaker

We continue to amass more electronic devices, all of which need regular charging and re-charging. And if you’re like a lot of people, you have one or more power strips hidden in your home office or entertainment unit. Then you plug in just one more thing. Your circuit breaker tripping is a good thing. It was designed to shut down when faced with a potentially dangerous electrical situation.

Frequent Circuit Breaker Tripping: Reset, Reset…or Solve the Problem

Q: What do a circuit overload and a short circuit have in common?
A: They are both dangerous and they both cause circuit breaker tripping.

Circuit Overload

If you have several appliances plugged in at the same time and it causes your circuit breaker to trip, that’s an overload. There’s no “right” number of appliances that can plug-in to one outlet. The overload has more to do with the amount of electricity (amperage) the appliances are trying to draw from an overburdened system.

Electrical wires are rated to determine how much amperage they can manage. An overload means your demand exceeded a wire’s amperage ability. This can cause the wire to overheat, and that’s a fire risk.

Short Circuit

Electrical flow can be measured in phases. When the current flows from point A to point B, that’s phase one. If there’s an interruption or a deviation in phase one, that’s a short circuit. It can be a “direct short,” within one phase or a phase-to-ground short; a “ground fault.”

A direct short sends a large amount of current through the wire, unrestrained and unrestricted, and it’s a fire risk. A ground fault is equally dangerous. It means the current flowing through the wire touched something; a metal obstacle. This can also cause a fire.

What To Do When the Circuit Breaker Trips

You’re in the master bath. You plug a hairdryer into an outlet in which a curling iron is on high and an uncharged electric toothbrush is charging. The lights go out and all appliances turn off. That’s circuit breaker tripping. Normally, we reset the circuit breaker, unplug the toothbrush, and life goes on.

Here’s how to reset your circuit:

At the circuit breaker box, you can usually see the flipped handle for a particular area of the home in which the power shut down. If not, you’ll need to know which breaker handle is designated for the master bath. (It’s a good idea to have breakers labeled “kitchen appliances,” “laundry,” “bathroom countertop,” etc.)

It’s also a good idea to keep a flashlight near your circuit breaker box.

To reset the tripped circuit breaker, move the handle to the off position. Then flip it back on. We recommend you stand back or wear safety goggles to protect your eyes in case any sparks fly. (This is tricky: A spark could be from a wire and a one-time occurrence. If a spark comes from the panel, shut everything off and call us.)

Electrical Service for Phoenix, Scottsdale, Areas, AZ

If your circuit breaker keeps tripping, it’s a sign something’s wrong with the circuit or your circuit breaker is going bad. You need to schedule an electrical service call.

In addition to frequent tripping, if you notice:

  • The breaker flips off as soon as you reset it
  • A burning smell coming from the breaker box
  • Scorch or burn marks on the breaker
  • Signs of overheating; melted plastic on the breaker

…contact Turn It On Electric immediately.

Never:

  • Allow an unlicensed repair person to attempt an electrical repair
  • Attempt DIY (do-it-yourself) electrical repair unless qualified/trained
  • Handle wet electrical equipment/appliances

Always:

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Categories Electrical Wiring, Residential

What is a double-tapped circuit breaker?

double-tapped circuit breaker

Electrical professionals repair a lot of double-tapped circuit breakers. It’s often considered a minor defect, but any electrical fire risk is a major problem.

Breakers can be single-pole or double-pole. A double-tapped circuit breaker occurs when two “hot” circuit wires are connected to one terminal of a single-pole breaker. This can cause loose connections, overheating (which trips the breaker), and arcing, all of which are electrical fire hazards.

Why Do I Have a Double-Tapped Circuit Breaker?

The reason you have a double-tapped circuit breaker is probably because your panel box didn’t have enough space to connect all the necessary wiring. An unethical electrical technician or a DIY (do-it-yourself) homeowner may have done it at some point in your home’s history to avoid buying the 2-circuit hardware or – what was needed – replacing the panel box.

The National Electrical Code (NEC) doesn’t have a specific code that states a double-tapped circuit breaker is illegal. But Code 110.3(B) says, “Equipment that is listed, labeled, or both shall be installed and used in accordance with any instructions included in the listing or labeling.”

One study guide also adds as an example, that installing a GE circuit breaker in a Cutler-Hammer electric panel just because it fits doesn’t mean it’s right. Using another manufacturer’s circuit breaker in the wrong panelboard violates NEC 110.3(B) and violates the product listing.”

That means double-tapping is a code violation because manufacturers only allow one wire installed.

Why You Need an AZ Experienced Electrician

If you examine your breaker box, you should find a label that says the device is designed for one or two wires (conductors). If it’s designed for one but you have two, it’s double-tapped. The way most homeowners learn they have a double-tapped circuit breaker is when they have electrical issues. A local electrical professional can show them the double-tapped circuitry that is causing problems.

Never attempt to repair a double-tapped breaker. DIY electrical work puts you at risk for shock or electrocution. It also increases the risk of a house fire. When you weigh the time and money DIY electrical work requires, it’s always cheaper (and healthier) to trust your family electrician.

If you have an untrained person handle the repair, you may get a quick fix that is as dangerous as the original problem. It may be okay if your electrician chooses to “pigtail” the wiring inside the panel box if the circuit breaker isn’t overloaded. But your circuit breaker likely is overloaded; that’s part of the problem.

  • Adding another, separate breaker is an option, but again… If your panel box is at full capacity, there won’t be any availability for another single breaker.
  • If the manufacturer label indicates it’s okay, a tandem breaker with 2 one-pole connections might work. Your electrician will tell you if the panel’s data plate says a tandem breaker installation is safe.

Your circuit breaker should not exceed 75% of the unit’s load capacity rating. It should never carry 100% of a non-continuous load in addition to 125% of any continuous load. A professional electrician knows this and can explain it.

Turn It On Electric professionals are licensed, trained, bonded, and insured. They care about your home and safety. If you want an expert circuit breaker electrician in Phoenix or Tucson, contact TIO Electric.