Ever been in the middle of your favourite TV show, only for the power to suddenly cut out? It’s a common annoyance, especially in Cornwall where weather and infrastructure can play havoc with our electrical systems. Understanding how to test and reset your circuit breakers can save you a lot of frustration. So, let’s dive into the essentials of managing your home’s electrical circuits safely and effectively.

Understanding Circuit Breakers

What is a Circuit Breaker?

A circuit breaker is an automatic safety device designed to protect electrical circuits from damage caused by overloading or short circuits. Essentially, it “breaks” the flow of electricity when it detects a fault, preventing potential fires and other hazards.

Types of Circuit Breakers

In the UK, the most common types of circuit breakers include Miniature Circuit Breakers (MCBs) and Residual Current Circuit Breakers with Overcurrent (RCBOs). MCBs are designed to protect against overloads and short circuits, while RCBOs provide protection against earth faults and over-currents.

For more detailed guidance, you can refer to this MCB trips guide.

How Do Circuit Breakers Work?

Circuit breakers detect faults in the electrical system. When an overload or short circuit occurs, the breaker trips, cutting off the electrical supply to prevent damage. They can be reset manually once the fault is fixed, restoring the flow of electricity.

Common Causes of Tripped Circuit Breakers

Overloaded Circuits

One of the most frequent reasons for a tripped breaker is an overloaded circuit. This occurs when too many high-power appliances are used on the same circuit, exceeding its capacity​​.

Short Circuits

A short circuit happens when a live wire touches a neutral or earth wire, causing a surge of electricity that trips the breaker. This can be due to faulty wiring or damaged appliances​.

Ground Faults

Ground faults occur when a live wire comes into contact with the earth wire, causing the breaker to trip. This type of fault can be particularly dangerous and should be addressed immediately.

How to Test Circuit Breakers

Tools Needed

To test your circuit breakers, you’ll need a multimeter, a non-contact voltage tester, and possibly a screwdriver.

Safety Precautions

Before you start, make sure to turn off all appliances connected to the circuit you’re testing. Always wear rubber-soled shoes and avoid standing on wet surfaces.

Step-by-Step Testing Guide

Turn Off All Appliances: Ensure all devices on the circuit are turned off.

Use a Voltage Tester: Verify there’s no power running through the circuit.

Check the Breaker: Use a multimeter to check for continuity. If there’s no continuity, the breaker may need replacing.

Test with a Multimeter: Set your multimeter to the correct voltage range, place the probes on the breaker terminals, and check the reading.

How to Reset Circuit Breakers

Identifying the Tripped Breaker

A tripped breaker will be in the “off” position or slightly out of alignment compared to the others. Some breakers have a visible indicator.

Preparing to Reset

Before resetting, make sure the cause of the trip has been resolved. Turn off or unplug appliances that may have caused the overload.

Resetting the Breaker

Firmly switch the breaker to the “off” position, then back to the “on” position. You should feel or hear a click when it resets.

Post-Reset Checks

After resetting, turn on appliances one by one to ensure the breaker doesn’t trip again. If it does, you may have an underlying issue that needs professional attention​.

When to Call a Professional

Persistent Issues

If your breaker continues to trip despite troubleshooting, it’s time to call in a professional. Repeated trips can indicate deeper electrical problems.

For emergency services related to electrical issues, check out Wave Electrical Solutions’ emergency services.

Safety Concerns

Electricity is hazardous, and safety should always come first. If you’re unsure about any step in testing or resetting your breakers, consult a certified electrician.

FAQs

What should I do if my circuit breaker keeps tripping?

Repeated tripping usually indicates a persistent problem. Check for overloaded circuits or faulty appliances. If the issue persists, contact a professional electrician.

Can I reset a breaker myself?

Yes, you can reset a breaker yourself by switching it off and then on again. However, ensure you’ve resolved the cause of the trip before resetting.

How can I prevent my breakers from tripping?

Avoid overloading circuits by distributing high-power appliances across different circuits. Regularly check your wiring and replace any faulty devices​​.

Final Thoughts

Understanding how to test and reset your circuit breakers is crucial for maintaining a safe and functional home. While some issues can be resolved with a simple reset, persistent problems require professional attention. Stay safe and proactive with your home’s electrical system.

For more expert advice or immediate assistance, contact us.