Breaker Panel Box Troubleshooting Guide (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

Turn off the main power before inspecting your breaker panel box. Check for tripped breakers, signs of damage, or burning smells. If you find a problem, reset or replace the affected breaker as needed.

Confirm the symptom

Power outage in part or all of your home
Breaker trips repeatedly
Buzzing or burning smell from the panel
Warm or discolored breakers
Flickering lights when using appliances

Tools and prep

Voltage tester
Screwdrivers (flathead and Phillips)
Insulated gloves
Flashlight
Replacement breakers (if needed)
Safety goggles
Lockout-tagout device (optional but recommended)

Step-by-step troubleshooting

Turn Off Main Power
Do: Switch off the main breaker to cut power to the entire panel.
Observe: Power is off to the panel.
Means: Safe to proceed with inspection.
Next: Inspect for tripped breakers
Inspect for Tripped Breakers
Do: Look for breakers in the 'off' position or between 'on' and 'off'.
Observe: Tripped breakers are identified.
Means: Resetting may restore power.
Next: Reset tripped breakers
Reset Tripped Breakers
Do: Move the tripped breaker fully to 'off', then back to 'on'.
Observe: Breaker stays in 'on' position.
Means: Issue may be resolved.
Next: Test affected circuits
Test Affected Circuits
Do: Turn power back on and check if the circuits work properly.
Observe: Circuits function without tripping.
Means: Problem is resolved.
Next: Monitor for recurring issues
Check for Damage or Wear
Do: Inspect breakers and wiring for signs of damage, discoloration, or burning.
Observe: Visible damage or wear is found.
Means: Professional repair or replacement may be needed.
Next: Replace damaged components if safe to do so
Replace Damaged Components
Do: Remove and replace any damaged breakers or wiring with appropriate replacements.
Observe: Components function correctly after replacement.
Means: Issue is resolved.
Next: Restore power and test

Common causes

Cause	Likelihood	Difficulty	Part often needed
Overloaded Circuit Too many devices drawing power from a single circuit.	Common	Easy	Adequate circuit breaker
Short Circuit Wires touch each other, causing a surge.	Sometimes	Medium	Wire insulation or replacement
Ground Fault Current leaks to ground, often in wet areas.	Sometimes	Medium	GFCI breaker
Faulty Appliance A defective appliance draws excessive current.	Sometimes	Easy–Medium	Appliance repair or replacement
Worn Breaker Breaker mechanism fails over time.	Sometimes	Medium	Replacement breaker
Loose Wiring Connections inside the panel become loose.	Rare	Hard	Professional inspection

Parts matching

Common parts needed for breaker panel box repairs include:

Standard circuit breakers (15A, 20A, etc.)
GFCI circuit breakers
Arc fault circuit breakers (AFCI)
Wire nuts and connectors
Insulated electrical tape
Main breaker replacement (if needed)

Always match the amperage and type of breaker to the circuit requirements.

When to call a professional

Breaker trips repeatedly after reset
Smell of burning or visible damage inside the panel
Warm or discolored breakers
Unfamiliar with electrical work or unsure about safety
Panel is old or outdated (e.g., fuse box style)
Power issues affect multiple circuits or the whole home

FAQ

How do I know if a breaker is tripped?

A tripped breaker will be in the 'off' position or somewhere between 'on' and 'off'. It may also feel warm to the touch.

Can I replace a circuit breaker myself?

Yes, if you're comfortable working with electricity and have the right tools. Always turn off the main power before attempting any repairs.

What should I do if a breaker won't reset?

If a breaker won't reset or trips immediately after resetting, it indicates a serious issue. Turn off the main power and contact a licensed electrician.

Why is my breaker panel warm?

A warm panel can indicate an overloaded circuit or a faulty breaker. If it's excessively hot or discolored, it's best to consult a professional.

How often should I inspect my breaker panel?

Inspect your breaker panel at least once a year for signs of wear, damage, or overheating to ensure it's functioning safely.