What We Look for Inside an Electrical Panel (Besides Dead Mice)

If you follow my content, you may have seen a recent YouTube Short where I open an older ITE Pushmatic electrical panel, mention that it’s already over 40 years old… and then turn the camera to reveal two dead mice inside.

“That’s a red flag.”

Yes — vermin in an electrical panel is absolutely a concern.

But here’s the important part:

Even when there aren’t rodents inside, electrical panels can hide serious safety issues that most homeowners never see.

If you’re buying a home in Pittsburgh or Western Pennsylvania, here’s what a thorough home inspector is actually looking for inside your electrical panel.

🎥 Watch the Short

Electrical Panel Inspection in Pittsburgh

Why Electrical Panel Inspections Matter in Pittsburgh

Many homes in the Pittsburgh area were built between the 1940s and 1980s. That means we frequently inspect:

• 60–100 amp older services

• ITE / Pushmatic panels

• Federal Pacific (FPE) panels

• Zinsco panels

• Early aluminum branch wiring

• Mixed wiring upgrades over decades

An electrical panel is the control center of the home. If there are defects here, they can impact:

• Fire safety

• Appliance performance

• Insurance underwriting

• Future upgrade costs

• Resale value

1. Panel Brand & Age

Not all panels are created equal.

During an inspection in Pittsburgh or surrounding communities like Cranberry Township, Wexford, Butler, or Sewickley, we first identify:

• Manufacturer

• Approximate age

• Service amperage

• Signs of prior upgrades

Older panels like ITE Pushmatic are not automatically defective — but they are outdated and can present concerns such as:

• Breakers that stick or fail to trip

• Limited availability of replacement parts

• No modern AFCI/GFCI compatibility

Age alone isn’t always a defect — but it’s part of the risk profile.

2. Type of Wiring (Copper vs. Aluminum)

Inside the panel, we look closely at conductor types:

Copper Wiring

• Most common

• Generally reliable

• Less expansion/contraction risk

Aluminum Branch Wiring (1960s–1970s homes)

• Expands and contracts more than copper

• More prone to loose terminations

• Can create overheating risks if not properly maintained

If aluminum wiring is present, we look for:

• Proper anti-oxidant compound

• Correct termination methods

• Signs of overheating or discoloration

3. Wire Sizing & Overfusing

One of the most important safety checks:

Is the breaker properly sized for the wire it protects?

If a 20-amp breaker is protecting 14-gauge wiring (which should only be on a 15-amp breaker), that is a significant safety issue.

Improper sizing can allow wires to overheat before the breaker trips — increasing fire risk.

This is something homeowners almost never see — but inspectors absolutely look for it.

4. Double Taps & Improper Terminations

We check for:

• Double tapped breakers (two wires under one lug when not rated for it)

• Loose conductors

• Missing bushings

• Missing cable clamps

• Open knockouts

• Improper bonding/grounding

• Neutrals and grounds improperly combined (in subpanels)

Loose or improperly secured conductors can arc and overheat.

5. Moisture & Corrosion

Western Pennsylvania homes deal with:

• High humidity basements

• Foundation seepage

• Older stone foundations

• Seasonal condensation

Inside panels, we look for:

• Rust

• Corrosion on bus bars

• Water staining

• White powder oxidation

• Evidence of past water entry through the service mast

Moisture + electricity = serious concern.

6. Breaker Condition

We gently test breaker seating and look for:

• Loose breakers

• Burn marks

• Discoloration

• Melted insulation

• Scorching on bus bars

If breakers feel loose or fail to seat properly, it may indicate panel wear.

7. Signs of Rodents (Yes, Really)

Back to the mice.

Rodents inside panels are more common than most people think — especially in older homes or homes near wooded areas in Western PA.

We look for:

• Nesting material

• Chewed insulation

• Droppings

• Deceased rodents (unfortunately)

Rodent damage can expose conductors and create short circuits.

So yes…

Dead mice = red flag.

Do Home Inspectors Have to Open the Panel?

According to the Standards of Practice, inspectors are not required to remove the dead front cover.

However, at Keystone Castle Inspections, we generally do remove the dead front cover when it is safe and accessible because many serious electrical concerns are hidden behind it.

If it cannot be safely opened (blocked access, unsafe conditions, active arcing, etc.), that limitation is documented in the report.

But when accessible — we open it.

Because hidden issues are still issues.

Why This Matters for Pittsburgh Homebuyers

Electrical repairs can range from:

• Minor corrections ($150–$400)

• Breaker replacements

• Aluminum wiring remediation

• Full panel replacements ($2,000–$4,500+ depending on service upgrade)

Understanding the condition of the panel helps buyers:

• Negotiate repairs

• Budget for upgrades

• Make informed decisions

• Avoid hidden fire hazards

The Bigger Picture: Property Health

Your electrical panel is just one part of the home’s overall system.

In Western Pennsylvania homes, we frequently evaluate:

• Electrical systems

• Radon levels

• Moisture intrusion

• Drainage and grading

• Mold risk

• Structural movement

• Sewer laterals

Because homes aren’t just buildings — they’re systems.

Buying a Home in Pittsburgh or Western PA?

If you're purchasing a home in:

• Pittsburgh

• Cranberry Township

• Wexford

• Butler

• Beaver

• Sewickley

• North Hills

• Greater Western PA

And you want a thorough, modern, technology-driven inspection…

We’re here to help.

And if I find mice in your panel?

You’ll be the first to know.

Keystone Castle Inspections

Premium Home Inspections & Environmental TestingWestern Pennsylvania