One of the most common misconceptions about home inspections is that inspectors are required to open every electrical panel in a house. While it’s true that electrical safety is a critical part of the inspection, there are times when opening a panel can be risky—or even cause damage.
What Home Inspectors Actually Do
A home inspector evaluates the visible and accessible components of a home’s electrical system, including:
- Checking for proper grounding and bonding
- Inspecting visible wiring for safety concerns
- Testing outlets and light switches
- Evaluating the main service panel (when safely accessible)
- Looking for signs of overheating, corrosion, or outdated wiring
Why Some Panels Shouldn’t Be Opened
On the Big Island, many older homes—especially those built in the mid-1900s—still have outdated electrical panels. Some of these panels are so deteriorated that simply opening them could cause a major issue, such as:
- Loose or Brittle Wiring: Over time, heat and humidity can cause wiring to become fragile. Moving a panel cover might loosen or break a connection, leading to a power failure or even an arc fault.
- Corrosion and Rust: In homes with water catchment systems or near the ocean, electrical panels may be heavily corroded. Opening a rusted panel could disturb internal components, making the system even less safe.
- Old or Recalled Panels: Some outdated panels, like certain models of Zinsco, Federal Pacific (FPE), and Pushmatic, have known safety issues. These panels may not trip breakers properly, posing a fire risk. Opening them can sometimes cause breakers to fail, leaving parts of the home unprotected.
- Signs of Active Electrical Issues: If there are burn marks, buzzing sounds, or an odd smell coming from the panel, it could indicate a severe issue. In such cases, opening the panel is best left to a licensed electrician.
Why This Myth Persists
Homebuyers and sellers often assume that a home inspection includes a full electrical evaluation, but inspections are non-invasive by design. The goal is to identify potential red flags and recommend further evaluation by a licensed electrician when necessary.
The Bottom Line
A responsible home inspector will assess an electrical panel when it’s safe to do so, but not at the risk of causing damage or creating a hazard. In older Big Island homes, caution is especially important. If an inspector determines that a panel is too risky to open, it’s not a shortcut—it’s a safety measure. In those cases, hiring an electrician for further evaluation is the best course of action.